{
"version": "2.2",
"instance": {
"d576116dncsr.htm": {
"nsprefix": "cik0001090116",
"nsuri": "http://www.nuv.com/20231031",
"dts": {
"schema": {
"local": [
"cik0001090116-20231031.xsd"
],
"remote": [
"http://www.xbrl.org/2003/xbrl-instance-2003-12-31.xsd",
"http://www.xbrl.org/2003/xbrl-linkbase-2003-12-31.xsd",
"http://www.xbrl.org/2003/xl-2003-12-31.xsd",
"http://www.xbrl.org/2003/xlink-2003-12-31.xsd",
"http://www.xbrl.org/2005/xbrldt-2005.xsd",
"http://www.xbrl.org/2006/ref-2006-02-27.xsd",
"http://www.xbrl.org/2006/xbrldi-2006.xsd",
"http://www.xbrl.org/lrr/role/negated-2009-12-16.xsd",
"http://www.xbrl.org/lrr/role/net-2009-12-16.xsd",
"http://www.xbrl.org/lrr/role/reference-2009-12-16.xsd",
"https://www.xbrl.org/2020/extensible-enumerations-2.0.xsd",
"https://www.xbrl.org/dtr/type/2020-01-21/types.xsd",
"https://www.xbrl.org/dtr/type/2022-03-31/types.xsd",
"https://xbrl.fasb.org/srt/2023/elts/srt-2023.xsd",
"https://xbrl.fasb.org/srt/2023/elts/srt-roles-2023.xsd",
"https://xbrl.fasb.org/srt/2023/elts/srt-types-2023.xsd",
"https://xbrl.fasb.org/us-gaap/2023/elts/us-gaap-2023.xsd",
"https://xbrl.fasb.org/us-gaap/2023/elts/us-roles-2023.xsd",
"https://xbrl.fasb.org/us-gaap/2023/elts/us-types-2023.xsd",
"https://xbrl.sec.gov/cef/2023/cef-2023.xsd",
"https://xbrl.sec.gov/cef/2023/cef-2023_pre.xsd",
"https://xbrl.sec.gov/country/2023/country-2023.xsd",
"https://xbrl.sec.gov/dei/2023/dei-2023.xsd",
"https://xbrl.sec.gov/dei/2023/dei-2023_lab.xsd"
]
},
"definitionLink": {
"local": [
"cik0001090116-20231031_def.xml"
]
},
"labelLink": {
"local": [
"cik0001090116-20231031_lab.xml"
]
},
"presentationLink": {
"local": [
"cik0001090116-20231031_pre.xml"
]
},
"inline": {
"local": [
"d576116dncsr.htm"
]
}
},
"keyStandard": 52,
"keyCustom": 0,
"axisStandard": 2,
"axisCustom": 0,
"memberStandard": 1,
"memberCustom": 50,
"hidden": {
"total": 2,
"http://xbrl.sec.gov/dei/2023": 2
},
"contextCount": 116,
"entityCount": 1,
"segmentCount": 51,
"elementCount": 247,
"unitCount": 4,
"baseTaxonomies": {
"http://xbrl.sec.gov/cef/2023": 235,
"http://fasb.org/us-gaap/2023": 12,
"http://xbrl.sec.gov/dei/2023": 4
},
"report": {
"R1": {
"role": "http://xbrl.sec.gov/cef/role/N2",
"longName": "995470 - Disclosure - N-2",
"shortName": "N-2",
"isDefault": "true",
"groupType": "disclosure",
"subGroupType": "",
"menuCat": "Cover",
"order": "1",
"firstAnchor": {
"contextRef": "P11_01_2022To10_31_2023",
"name": "dei:DocumentType",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"div",
"div",
"div",
"div",
"div",
"div",
"body",
"html"
],
"reportCount": 1,
"baseRef": "d576116dncsr.htm",
"first": true,
"unique": true
},
"uniqueAnchor": {
"contextRef": "P11_01_2022To10_31_2023",
"name": "dei:DocumentType",
"unitRef": null,
"xsiNil": "false",
"lang": "en-US",
"decimals": null,
"ancestors": [
"div",
"div",
"div",
"div",
"div",
"div",
"body",
"html"
],
"reportCount": 1,
"baseRef": "d576116dncsr.htm",
"first": true,
"unique": true
}
}
},
"tag": {
"cef_IncentiveAllocationMinimumPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "IncentiveAllocationMinimumPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Incentive Allocation Minimum [Percent]"
}
}
},
"auth_ref": [
"r121"
]
},
"cef_LatestNav": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LatestNav",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Latest NAV (Deprecated 2023-01-31)"
}
}
},
"auth_ref": [
"r156"
]
},
"cef_SeniorSecuritiesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities [Table Text Block]"
}
}
},
"auth_ref": [
"r135"
]
},
"dei_InvestmentCompanyActRegistration": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "InvestmentCompanyActRegistration",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment Company Act Registration"
}
}
},
"auth_ref": [
"r162"
]
},
"cef_SecurityTitleTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityTitleTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Title [Text Block]"
}
}
},
"auth_ref": [
"r93"
]
},
"us-gaap_ClassOfStockDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "ClassOfStockDomain",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"documentation": "Share of stock differentiated by the voting rights the holder receives. Examples include, but are not limited to, common stock, redeemable preferred stock, nonredeemable preferred stock, and convertible stock."
}
}
},
"auth_ref": [
"r12",
"r13",
"r14",
"r15",
"r16",
"r18",
"r19",
"r20",
"r21",
"r22",
"r23",
"r24",
"r25",
"r26",
"r27",
"r28",
"r29",
"r30",
"r47",
"r48",
"r49",
"r50",
"r51",
"r52",
"r54",
"r55",
"r56",
"r57",
"r58",
"r59",
"r60",
"r61",
"r62",
"r63",
"r64",
"r65",
"r66",
"r67",
"r68",
"r69",
"r70",
"r73",
"r74",
"r75",
"r76",
"r77",
"r78",
"r79",
"r174",
"r175",
"r177"
]
},
"cef_ManagementFeeNotBasedOnNetAssetsNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ManagementFeeNotBasedOnNetAssetsNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Management Fee not based on Net Assets, Note [Text Block]"
}
}
},
"auth_ref": [
"r128"
]
},
"dei_InvestmentCompanyRegistrationAmendmentNumber": {
"xbrltype": "sequenceNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "InvestmentCompanyRegistrationAmendmentNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment Company Registration Amendment Number"
}
}
},
"auth_ref": [
"r162"
]
},
"dei_InvestmentCompanyRegistrationAmendment": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "InvestmentCompanyRegistrationAmendment",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment Company Registration Amendment"
}
}
},
"auth_ref": [
"r162"
]
},
"us-gaap_StatementClassOfStockAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "StatementClassOfStockAxis",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Class of Stock [Axis]",
"documentation": "Information by the different classes of stock of the entity."
}
}
},
"auth_ref": [
"r12",
"r13",
"r14",
"r15",
"r16",
"r18",
"r19",
"r20",
"r21",
"r22",
"r23",
"r24",
"r25",
"r26",
"r27",
"r28",
"r29",
"r30",
"r47",
"r48",
"r49",
"r50",
"r51",
"r52",
"r54",
"r55",
"r56",
"r57",
"r58",
"r59",
"r60",
"r61",
"r62",
"r63",
"r64",
"r65",
"r66",
"r67",
"r68",
"r69",
"r70",
"r73",
"r74",
"r75",
"r76",
"r77",
"r78",
"r79",
"r174",
"r175",
"r177"
]
},
"cik0001090116_ValuationRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "ValuationRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Valuation Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_CapitalStockLongTermDebtAndOtherSecuritiesAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "CapitalStockLongTermDebtAndOtherSecuritiesAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Capital Stock, Long-Term Debt, and Other Securities [Abstract]"
}
}
},
"auth_ref": [
"r92"
]
},
"dei_EntityEmergingGrowthCompany": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityEmergingGrowthCompany",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Emerging Growth Company",
"documentation": "Indicate if registrant meets the emerging growth company criteria."
}
}
},
"auth_ref": [
"r87"
]
},
"cef_AcquiredFundFeesEstimatedNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AcquiredFundFeesEstimatedNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Acquired Fund Fees Estimated, Note [Text Block]"
}
}
},
"auth_ref": [
"r120"
]
},
"cef_NoTradingHistoryTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "NoTradingHistoryTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "No Trading History [Text Block]"
}
}
},
"auth_ref": [
"r157"
]
},
"cef_LatestPremiumDiscountToNavPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LatestPremiumDiscountToNavPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Latest Premium (Discount) to NAV [Percent]"
}
}
},
"auth_ref": [
"r156"
]
},
"cef_AcquiredFundFeesAndExpensesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AcquiredFundFeesAndExpensesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Acquired Fund Fees and Expenses, Note [Text Block]"
}
}
},
"auth_ref": [
"r118"
]
},
"cef_SeniorSecuritiesAmount": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesAmount",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Amount (Deprecated 2023-01-31)"
}
}
},
"auth_ref": [
"r136"
]
},
"cef_LongTermDebtDividendsAndCovenantsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtDividendsAndCovenantsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Dividends and Covenants [Text Block]"
}
}
},
"auth_ref": [
"r107"
]
},
"cik0001090116_CybersecurityRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CybersecurityRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Cybersecurity Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_AcquiredFundIncentiveAllocationNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AcquiredFundIncentiveAllocationNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Acquired Fund Incentive Allocation, Note [Text Block]"
}
}
},
"auth_ref": [
"r121"
]
},
"cef_IncentiveAllocationPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "IncentiveAllocationPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Incentive Allocation [Percent]"
}
}
},
"auth_ref": [
"r121"
]
},
"cef_SecurityDividendsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityDividendsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Dividends [Text Block]"
}
}
},
"auth_ref": [
"r94"
]
},
"cef_CapitalStockTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "CapitalStockTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Capital Stock [Table Text Block]"
}
}
},
"auth_ref": [
"r93"
]
},
"cef_AcquiredFundTotalAnnualExpensesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AcquiredFundTotalAnnualExpensesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Acquired Fund Total Annual Expenses, Note [Text Block]"
}
}
},
"auth_ref": [
"r122"
]
},
"dei_DelayedOrContinuousOffering": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DelayedOrContinuousOffering",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Delayed or Continuous Offering"
}
}
},
"auth_ref": [
"r90",
"r91",
"r161"
]
},
"cef_IncentiveAllocationMaximumPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "IncentiveAllocationMaximumPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Incentive Allocation Maximum [Percent]"
}
}
},
"auth_ref": [
"r121"
]
},
"dei_DividendOrInterestReinvestmentPlanOnly": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DividendOrInterestReinvestmentPlanOnly",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Dividend or Interest Reinvestment Plan Only"
}
}
},
"auth_ref": [
"r90",
"r91",
"r161"
]
},
"dei_EffectiveUponFiling462e": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveUponFiling462e",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective Upon Filing, 462(e)"
}
}
},
"auth_ref": [
"r169"
]
},
"cef_FinancialHighlightsAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "FinancialHighlightsAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Financial Highlights [Abstract]"
}
}
},
"auth_ref": [
"r131"
]
},
"cef_PrimaryShelfFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "PrimaryShelfFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Primary Shelf [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"cef_LatestSharePrice": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LatestSharePrice",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Latest Share Price (Deprecated 2023-01-31)"
}
}
},
"auth_ref": [
"r156"
]
},
"dei_ApproximateDateOfCommencementOfProposedSaleToThePublic": {
"xbrltype": "dateOrAsapItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "ApproximateDateOfCommencementOfProposedSaleToThePublic",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Approximate Date of Commencement of Proposed Sale to Public",
"documentation": "The approximate date of a commencement of a proposed sale of securities to the public. This element is disclosed in S-1, S-3, S-4, S-11, F-1, F-3 and F-10 filings."
}
}
},
"auth_ref": [
]
},
"dei_EntityAddressesAddressTypeAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressesAddressTypeAxis",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Addresses, Address Type [Axis]",
"documentation": "The axis of a table defines the relationship between the domain members or categories in the table and the line items or concepts that complete the table."
}
}
},
"auth_ref": [
]
},
"cef_SecurityVotingRightsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityVotingRightsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Voting Rights [Text Block]"
}
}
},
"auth_ref": [
"r95"
]
},
"cef_SeniorSecuritiesAmt": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesAmt",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Amount"
}
}
},
"auth_ref": [
"r136"
]
},
"cef_RegisteredClosedEndFundFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RegisteredClosedEndFundFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Registered Closed-End Fund [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"dei_AddressTypeDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AddressTypeDomain",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Address Type [Domain]",
"documentation": "An entity may have several addresses for different purposes and this domain represents all such types."
}
}
},
"auth_ref": [
]
},
"dei_AdditionalSecuritiesEffective413b": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AdditionalSecuritiesEffective413b",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Additional Securities Effective, 413(b)"
}
}
},
"auth_ref": [
"r165"
]
},
"cef_PrimaryShelfQualifiedFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "PrimaryShelfQualifiedFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Primary Shelf Qualified [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"cef_LongTermDebtTitleTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtTitleTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Title [Text Block]"
}
}
},
"auth_ref": [
"r105"
]
},
"cef_BusinessDevelopmentCompanyFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "BusinessDevelopmentCompanyFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Business Development Company [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"cik0001090116_AtTheMarketTransactionMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "AtTheMarketTransactionMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "At The Market Transaction [Member]"
}
}
},
"auth_ref": [
]
},
"cef_SecurityLiquidationRightsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityLiquidationRightsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Liquidation Rights [Text Block]"
}
}
},
"auth_ref": [
"r96"
]
},
"dei_EffectiveWhenDeclaredSection8c": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveWhenDeclaredSection8c",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective when Declared, Section 8(c)"
}
}
},
"auth_ref": [
"r173"
]
},
"cef_SeniorSecuritiesCvgPerUnit": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesCvgPerUnit",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Coverage per Unit"
}
}
},
"auth_ref": [
"r137"
]
},
"us-gaap_SharePrice": {
"xbrltype": "perShareItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "SharePrice",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Share Price",
"documentation": "Price of a single share of a number of saleable stocks of a company."
}
}
},
"auth_ref": [
]
},
"dei_EffectiveUponFiling486b": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveUponFiling486b",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective upon Filing, 486(b)"
}
}
},
"auth_ref": [
"r171"
]
},
"cef_LongTermDebtPrincipal": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtPrincipal",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Principal"
}
}
},
"auth_ref": [
"r105"
]
},
"dei_BusinessContactMember": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "BusinessContactMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Business Contact [Member]",
"documentation": "Business contact for the entity"
}
}
},
"auth_ref": [
"r88",
"r89"
]
},
"cef_IntervalFundFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "IntervalFundFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Interval Fund [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"cef_SecurityLiabilitiesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityLiabilitiesTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Liabilities [Text Block]"
}
}
},
"auth_ref": [
"r97"
]
},
"cef_SeniorSecuritiesCoveragePerUnit": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesCoveragePerUnit",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Coverage per Unit (Deprecated 2023-01-31)"
}
}
},
"auth_ref": [
"r137"
]
},
"cef_SecurityPreemptiveAndOtherRightsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityPreemptiveAndOtherRightsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Preemptive and Other Rights [Text Block]"
}
}
},
"auth_ref": [
"r98"
]
},
"dei_EffectiveOnSetDate486b": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveOnSetDate486b",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective on Set Date, 486(b)"
}
}
},
"auth_ref": [
"r171"
]
},
"cef_DistributionsMayReducePrincipalTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "DistributionsMayReducePrincipalTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Distributions May Reduce Principal [Text Block]"
}
}
},
"auth_ref": [
"r100"
]
},
"cef_SecurityObligationsOfOwnershipTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SecurityObligationsOfOwnershipTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Security Obligations of Ownership [Text Block]"
}
}
},
"auth_ref": [
"r99"
]
},
"dei_EffectiveOnDate486b": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveOnDate486b",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective on Date, 486(b)"
}
}
},
"auth_ref": [
"r171"
]
},
"cef_NewCefOrBdcRegistrantFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "NewCefOrBdcRegistrantFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "New CEF or BDC Registrant [Flag]"
}
}
},
"auth_ref": [
"r91"
]
},
"cef_PreferredStockRestrictionsArrearageTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "PreferredStockRestrictionsArrearageTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Preferred Stock Restrictions, Arrearage [Text Block]"
}
}
},
"auth_ref": [
"r101"
]
},
"cef_SeniorSecuritiesInvoluntaryLiquidatingPreferencePerUnit": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesInvoluntaryLiquidatingPreferencePerUnit",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Involuntary Liquidating Preference per Unit (Deprecated 2023-01-31)"
}
}
},
"auth_ref": [
"r138"
]
},
"cef_PreferredStockRestrictionsOtherTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "PreferredStockRestrictionsOtherTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Preferred Stock Restrictions, Other [Text Block]"
}
}
},
"auth_ref": [
"r102"
]
},
"cef_RightsSubjectToOtherThanMajorityVoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RightsSubjectToOtherThanMajorityVoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Rights Subject to Other than Majority Vote [Text Block]"
}
}
},
"auth_ref": [
"r103"
]
},
"cef_FeeTableAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "FeeTableAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Fee Table [Abstract]"
}
}
},
"auth_ref": [
"r116"
]
},
"cef_SeniorSecuritiesHighlightsAnnualizedNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesHighlightsAnnualizedNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Highlights Annualized, Note [Text Block]"
}
}
},
"auth_ref": [
"r133",
"r140"
]
},
"cef_RightsLimitedByOtherSecuritiesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RightsLimitedByOtherSecuritiesTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Rights Limited by Other Securities [Text Block]"
}
}
},
"auth_ref": [
"r104"
]
},
"dei_EffectiveAfter60Days486a": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveAfter60Days486a",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective after 60 Days, 486(a)"
}
}
},
"auth_ref": [
"r170"
]
},
"dei_EntityExTransitionPeriod": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityExTransitionPeriod",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Ex Transition Period",
"documentation": "Indicate if an emerging growth company has elected not to use the extended transition period for complying with any new or revised financial accounting standards."
}
}
},
"auth_ref": [
"r172"
]
},
"cef_SeniorSecuritiesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities, Note [Text Block]"
}
}
},
"auth_ref": [
"r132",
"r140"
]
},
"cef_LongTermDebtTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt [Table Text Block]"
}
}
},
"auth_ref": [
"r105"
]
},
"cef_SeniorSecuritiesAverageMarketValuePerUnit": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesAverageMarketValuePerUnit",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Average Market Value per Unit"
}
}
},
"auth_ref": [
"r139"
]
},
"cef_RiskFactorsTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RiskFactorsTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Risk Factors [Table Text Block]"
}
}
},
"auth_ref": [
"r145"
]
},
"cef_ShareholderTransactionExpensesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ShareholderTransactionExpensesTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Shareholder Transaction Expenses [Table Text Block]"
}
}
},
"auth_ref": [
"r116"
]
},
"dei_EffectiveOnSetDate486a": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveOnSetDate486a",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective on Set Date, 486(a)"
}
}
},
"auth_ref": [
"r170"
]
},
"cef_SeniorSecuritiesHeadingsNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesHeadingsNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Headings, Note [Text Block]"
}
}
},
"auth_ref": [
"r142"
]
},
"cik0001090116_IncomeRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "IncomeRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Income Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_LongTermDebtStructuringTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtStructuringTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Structuring [Text Block]"
}
}
},
"auth_ref": [
"r106"
]
},
"cef_SeniorSecuritiesAveragingMethodNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesAveragingMethodNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Averaging Method, Note [Text Block]"
}
}
},
"auth_ref": [
"r141"
]
},
"cef_InvestmentObjectivesAndPracticesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "InvestmentObjectivesAndPracticesTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment Objectives and Practices [Text Block]"
}
}
},
"auth_ref": [
"r144"
]
},
"dei_EntityInvCompanyType": {
"xbrltype": "invCompanyType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityInvCompanyType",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Inv Company Type",
"documentation": "One of: N-1A (Mutual Fund), N-1 (Open-End Separate Account with No Variable Annuities), N-2 (Closed-End Investment Company), N-3 (Separate Account Registered as Open-End Management Investment Company), N-4 (Variable Annuity UIT Separate Account), N-5 (Small Business Investment Company), N-6 (Variable Life UIT Separate Account), S-1 or S-3 (Face Amount Certificate Company), S-6 (UIT, Non-Insurance Product)."
}
}
},
"auth_ref": [
"r163"
]
},
"dei_EffectiveOnDate486a": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EffectiveOnDate486a",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effective on Date, 486(a)"
}
}
},
"auth_ref": [
"r170"
]
},
"cef_SeniorSecuritiesHighlightsAuditedNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SeniorSecuritiesHighlightsAuditedNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Senior Securities Highlights Audited, Note [Text Block]"
}
}
},
"auth_ref": [
"r134",
"r140"
]
},
"cef_SalesLoadPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SalesLoadPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Sales Load [Percent]"
}
}
},
"auth_ref": [
"r116"
]
},
"cef_GeneralDescriptionOfRegistrantAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "GeneralDescriptionOfRegistrantAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "General Description of Registrant [Abstract]"
}
}
},
"auth_ref": [
"r143"
]
},
"cik0001090116_SwapTransactionsRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "SwapTransactionsRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Swap Transactions Risk [Member]"
}
}
},
"auth_ref": [
]
},
"dei_ContactPersonnelName": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "ContactPersonnelName",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Contact Personnel Name",
"documentation": "Name of contact personnel"
}
}
},
"auth_ref": [
]
},
"cef_RiskTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RiskTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Risk [Text Block]"
}
}
},
"auth_ref": [
]
},
"dei_NewEffectiveDateForPreviousFiling": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "NewEffectiveDateForPreviousFiling",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "New Effective Date for Previous Filing"
}
}
},
"auth_ref": [
"r91",
"r158",
"r159",
"r160"
]
},
"cef_AnnualDividendPaymentInitial": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualDividendPaymentInitial",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Dividend Payment, Initial"
}
}
},
"auth_ref": [
"r147"
]
},
"dei_AdditionalSecurities462bFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AdditionalSecurities462bFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Additional Securities, 462(b), File Number"
}
}
},
"auth_ref": [
"r166"
]
},
"cef_AllRisksMember": {
"xbrltype": "domainItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AllRisksMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "All Risks:"
}
}
},
"auth_ref": [
]
},
"dei_AdditionalSecurities462b": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AdditionalSecurities462b",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Additional Securities. 462(b)"
}
}
},
"auth_ref": [
"r166"
]
},
"cef_SharePriceTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SharePriceTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Share Price [Table Text Block]"
}
}
},
"auth_ref": [
"r151"
]
},
"cef_RiskAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "RiskAxis",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Risk [Axis]"
}
}
},
"auth_ref": [
]
},
"dei_InvestmentCompanyActFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "InvestmentCompanyActFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment Company Act File Number"
}
}
},
"auth_ref": [
"r91",
"r158",
"r159",
"r160"
]
},
"cef_NoPublicTradingTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "NoPublicTradingTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "No Public Trading [Text Block]"
}
}
},
"auth_ref": [
"r153"
]
},
"dei_NoSubstantiveChanges462cFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "NoSubstantiveChanges462cFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "No Substantive Changes, 462(c), File Number"
}
}
},
"auth_ref": [
"r167"
]
},
"cik0001090116_ZeroCouponBondsRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "ZeroCouponBondsRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Zero Coupon Bonds Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_AnnualDividendPayment": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualDividendPayment",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Dividend Payment"
}
}
},
"auth_ref": [
"r147"
]
},
"dei_NoSubstantiveChanges462c": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "NoSubstantiveChanges462c",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "No Substantive Changes, 462(c)"
}
}
},
"auth_ref": [
"r167"
]
},
"cef_EffectsOfLeverageTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "EffectsOfLeverageTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effects of Leverage [Text Block]"
}
}
},
"auth_ref": [
"r146"
]
},
"cik0001090116_OtherInvestmentCompaniesRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "OtherInvestmentCompaniesRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Investment Companies Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_GlobalEconomicRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "GlobalEconomicRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Global Economic Risk [Member]"
}
}
},
"auth_ref": [
]
},
"dei_EntityAddressAddressLine1": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressAddressLine1",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, Address Line One",
"documentation": "Address Line 1 such as Attn, Building Name, Street Name"
}
}
},
"auth_ref": [
]
},
"dei_ExhibitsOnly462dFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "ExhibitsOnly462dFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Exhibits Only, 462(d), File Number"
}
}
},
"auth_ref": [
"r168"
]
},
"dei_ExhibitsOnly462d": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "ExhibitsOnly462d",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Exhibits Only, 462(d)"
}
}
},
"auth_ref": [
"r168"
]
},
"cik0001090116_ReverseRepurchaseAgreementRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "ReverseRepurchaseAgreementRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Reverse Repurchase Agreement Risk [Member]"
}
}
},
"auth_ref": [
]
},
"dei_EntityFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Securities Act File Number",
"documentation": "Commission file number. The field allows up to 17 characters. The prefix may contain 1-3 digits, the sequence number may contain 1-8 digits, the optional suffix may contain 1-4 characters, and the fields are separated with a hyphen."
}
}
},
"auth_ref": [
]
},
"cef_AnnualInterestRateInitialPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualInterestRateInitialPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Interest Rate, Initial [Percent]"
}
}
},
"auth_ref": [
"r147"
]
},
"dei_EntityAddressAddressLine2": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressAddressLine2",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, Address Line Two",
"documentation": "Address Line 2 such as Street or Suite number"
}
}
},
"auth_ref": [
]
},
"cef_AnnualDividendPaymentCurrent": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualDividendPaymentCurrent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Dividend Payment, Current"
}
}
},
"auth_ref": [
"r147"
]
},
"cik0001090116_ReinvestmentRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "ReinvestmentRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Reinvestment Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_AnnualInterestRatePercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualInterestRatePercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Interest Rate [Percent]"
}
}
},
"auth_ref": [
"r147"
]
},
"cik0001090116_LegislationAndRegulatoryRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "LegislationAndRegulatoryRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Legislation and Regulatory Risk [Member]"
}
}
},
"auth_ref": [
]
},
"dei_EntityAddressAddressLine3": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressAddressLine3",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, Address Line Three",
"documentation": "Address Line 3 such as an Office Park"
}
}
},
"auth_ref": [
]
},
"us-gaap_PreferredStockLiquidationPreference": {
"xbrltype": "perShareItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "PreferredStockLiquidationPreference",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Preferred Stock Liquidating Preference",
"documentation": "The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share."
}
}
},
"auth_ref": [
"r5",
"r6",
"r9",
"r175",
"r178"
]
},
"dei_EntityAddressCityOrTown": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressCityOrTown",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, City or Town",
"documentation": "Name of the City or Town"
}
}
},
"auth_ref": [
]
},
"cef_ReturnAtMinusFivePercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ReturnAtMinusFivePercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Return at Minus Five [Percent]"
}
}
},
"auth_ref": [
"r149"
]
},
"dei_EntityCentralIndexKey": {
"xbrltype": "centralIndexKeyItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityCentralIndexKey",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Central Index Key",
"documentation": "A unique 10-digit SEC-issued value to identify entities that have filed disclosures with the SEC. It is commonly abbreviated as CIK."
}
}
},
"auth_ref": [
"r87"
]
},
"cef_EffectsOfLeverageTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "EffectsOfLeverageTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effects of Leverage [Table Text Block]"
}
}
},
"auth_ref": [
"r149"
]
},
"cef_AnnualCoverageReturnRatePercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualCoverageReturnRatePercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Coverage Return Rate [Percent]"
}
}
},
"auth_ref": [
"r148"
]
},
"dei_EntityAddressStateOrProvince": {
"xbrltype": "stateOrProvinceItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressStateOrProvince",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, State or Province",
"documentation": "Name of the state or province."
}
}
},
"auth_ref": [
]
},
"cef_AnnualInterestRateCurrentPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualInterestRateCurrentPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Interest Rate, Current [Percent]"
}
}
},
"auth_ref": [
"r147"
]
},
"cef_ReturnAtMinusTenPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ReturnAtMinusTenPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Return at Minus Ten [Percent]"
}
}
},
"auth_ref": [
"r149"
]
},
"cef_LowestPriceOrBid": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LowestPriceOrBid",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Lowest Price or Bid"
}
}
},
"auth_ref": [
"r150"
]
},
"cef_SharePricesNotActualTransactionsTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "SharePricesNotActualTransactionsTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Share Prices Not Actual Transactions [Text Block]"
}
}
},
"auth_ref": [
"r152"
]
},
"dei_AmendmentFlag": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AmendmentFlag",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Amendment Flag",
"documentation": "Boolean flag that is true when the XBRL content amends previously-filed or accepted submission."
}
}
},
"auth_ref": [
]
},
"cik0001090116_SpecialRisksRelatedToCertainMunicipalObligationsMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "SpecialRisksRelatedToCertainMunicipalObligationsMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Special Risks Related to Certain Municipal Obligations [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_CreditRisksMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CreditRisksMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Credit Risks [Member]",
"terseLabel": "Credit Risk [Member]",
"documentation": "Credit Risks."
}
}
},
"auth_ref": [
]
},
"dei_EntityAddressPostalZipCode": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityAddressPostalZipCode",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Address, Postal Zip Code",
"documentation": "Code for the postal or zip code"
}
}
},
"auth_ref": [
]
},
"cik0001090116_TaxabilityRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "TaxabilityRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Taxability Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_ReturnAtZeroPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ReturnAtZeroPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Return at Zero [Percent]"
}
}
},
"auth_ref": [
"r149"
]
},
"dei_AmendmentDescription": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "AmendmentDescription",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Amendment Description",
"documentation": "Description of changes contained within amended document."
}
}
},
"auth_ref": [
]
},
"cik0001090116_InsuranceRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "InsuranceRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Insurance Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_EffectsOfLeveragePurposeTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "EffectsOfLeveragePurposeTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Effects of Leverage, Purpose [Text Block]"
}
}
},
"auth_ref": [
"r149"
]
},
"cef_ReturnAtPlusFivePercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ReturnAtPlusFivePercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Return at Plus Five [Percent]"
}
}
},
"auth_ref": [
"r149"
]
},
"cef_ReturnAtPlusTenPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ReturnAtPlusTenPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Return at Plus Ten [Percent]"
}
}
},
"auth_ref": [
"r149"
]
},
"dei_EntityRegistrantName": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityRegistrantName",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Registrant Name",
"documentation": "The exact name of the entity filing the report as specified in its charter, which is required by forms filed with the SEC."
}
}
},
"auth_ref": [
"r87"
]
},
"cef_HighestPriceOrBid": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "HighestPriceOrBid",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Highest Price or Bid"
}
}
},
"auth_ref": [
"r150"
]
},
"dei_CityAreaCode": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "CityAreaCode",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "City Area Code",
"documentation": "Area code of city"
}
}
},
"auth_ref": [
]
},
"us-gaap_InterestRateRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "InterestRateRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Interest Rate Risk [Member]",
"documentation": "The risk associated with changes in interest rates that effect the value of an interest-bearing asset or liability, and a servicing asset or liability."
}
}
},
"auth_ref": [
]
},
"cef_ExpenseExampleYears1to3": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ExpenseExampleYears1to3",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, Years 1 to 3"
}
}
},
"auth_ref": [
"r123"
]
},
"cik0001090116_MunicipalSecuritiesMarketRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "MunicipalSecuritiesMarketRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Municipal Securities Market Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherAnnualExpense2Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherAnnualExpense2Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Ae": {
"parentTag": "cef_OtherAnnualExpensesPercent",
"weight": 1.0,
"order": 2.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Annual Expense 2 [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"us-gaap_DebtInstrumentAxis": {
"xbrltype": "stringItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "DebtInstrumentAxis",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Debt Instrument [Axis]",
"documentation": "Information by type of debt instrument, including, but not limited to, draws against credit facilities."
}
}
},
"auth_ref": [
"r3",
"r7",
"r8",
"r10",
"r11",
"r17",
"r31",
"r32",
"r33",
"r34",
"r35",
"r36",
"r37",
"r38",
"r39",
"r40",
"r41",
"r42",
"r43",
"r44",
"r45",
"r46",
"r53",
"r80",
"r81",
"r82",
"r83",
"r84",
"r176"
]
},
"dei_DocumentType": {
"xbrltype": "submissionTypeItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentType",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Document Type",
"documentation": "The type of document being provided (such as 10-K, 10-Q, 485BPOS, etc). The document type is limited to the same value as the supporting SEC submission type, or the word 'Other'."
}
}
},
"auth_ref": [
]
},
"cef_OtherAnnualExpense3Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherAnnualExpense3Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Ae": {
"parentTag": "cef_OtherAnnualExpensesPercent",
"weight": 1.0,
"order": 3.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Annual Expense 3 [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"dei_LocalPhoneNumber": {
"xbrltype": "normalizedStringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "LocalPhoneNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Local Phone Number",
"documentation": "Local phone number for entity."
}
}
},
"auth_ref": [
]
},
"cik0001090116_UnratedSecuritiesRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "UnratedSecuritiesRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Unrated Securities Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherAnnualExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherAnnualExpensesPercent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Ae": {
"parentTag": null,
"weight": null,
"order": null,
"root": true
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Annual Expenses [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_EconomicAndPoliticalEventsRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "EconomicAndPoliticalEventsRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Economic and Political Events Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_MarketDiscountFromNetAssetValueMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "MarketDiscountFromNetAssetValueMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Market Discount from Net Asset Value [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_InvestmentAndMarketRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "InvestmentAndMarketRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Investment and Market Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_CounterpartyRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CounterpartyRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Counterparty Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_TobaccoSettlementBondRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "TobaccoSettlementBondRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Tobacco Settlement Bond Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_NetExpenseOverAssetsPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "NetExpenseOverAssetsPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Net Expense over Assets [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cef_WaiversAndReimbursementsOfFeesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "WaiversAndReimbursementsOfFeesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Waivers and Reimbursements of Fees [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cef_ExpenseExampleTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ExpenseExampleTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example [Table Text Block]"
}
}
},
"auth_ref": [
"r116"
]
},
"cef_TotalAnnualExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "TotalAnnualExpensesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Total Annual Expenses [Percent]"
}
}
},
"auth_ref": [
"r129"
]
},
"cef_AcquiredFundFeesAndExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AcquiredFundFeesAndExpensesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Acquired Fund Fees and Expenses [Percent]"
}
}
},
"auth_ref": [
"r119"
]
},
"cef_OtherExpensesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherExpensesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Expenses, Note [Text Block]"
}
}
},
"auth_ref": [
"r126"
]
},
"cik0001090116_TaxRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "TaxRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Tax Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_ExpenseExampleYear01": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ExpenseExampleYear01",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, Year 01"
}
}
},
"auth_ref": [
"r123"
]
},
"cik0001090116_FundTaxRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "FundTaxRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Fund Tax Risk [Member]"
}
}
},
"auth_ref": [
]
},
"dei_DocumentRegistrationStatement": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "DocumentRegistrationStatement",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Document Registration Statement",
"documentation": "Boolean flag that is true only for a form used as a registration statement."
}
}
},
"auth_ref": [
"r86"
]
},
"cef_ExpenseExampleYears1to5": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ExpenseExampleYears1to5",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, Years 1 to 5"
}
}
},
"auth_ref": [
"r123"
]
},
"cef_BdcFileNumber": {
"xbrltype": "fileNumberItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "BdcFileNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "BDC File Number"
}
}
},
"auth_ref": [
]
},
"cef_ExpenseExampleYears1to10": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ExpenseExampleYears1to10",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Expense Example, Years 1 to 10"
}
}
},
"auth_ref": [
"r123"
]
},
"us-gaap_DebtInstrumentNameDomain": {
"xbrltype": "domainItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "DebtInstrumentNameDomain",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"documentation": "The name for the particular debt instrument or borrowing that distinguishes it from other debt instruments or borrowings, including draws against credit facilities."
}
}
},
"auth_ref": [
"r4",
"r17",
"r31",
"r32",
"r33",
"r34",
"r35",
"r36",
"r37",
"r38",
"r39",
"r40",
"r41",
"r42",
"r43",
"r44",
"r45",
"r46",
"r53",
"r80",
"r81",
"r82",
"r83",
"r84",
"r176"
]
},
"dei_PreEffectiveAmendmentNumber": {
"xbrltype": "sequenceNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "PreEffectiveAmendmentNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Pre-Effective Amendment Number",
"documentation": "Amendment number to registration statement under the Securities Act of 1933 before the registration becomes effective."
}
}
},
"auth_ref": [
"r86"
]
},
"dei_PreEffectiveAmendment": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "PreEffectiveAmendment",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Pre-Effective Amendment"
}
}
},
"auth_ref": [
"r86"
]
},
"cef_PurposeOfFeeTableNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "PurposeOfFeeTableNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Purpose of Fee Table , Note [Text Block]"
}
}
},
"auth_ref": [
"r117"
]
},
"cik0001090116_RecentMarketConditionsMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "RecentMarketConditionsMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Recent Market Conditions [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_PuertoRicoMunicipalSecuritiesMarketRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "PuertoRicoMunicipalSecuritiesMarketRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Puerto Rico Municipal Securities Market Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_AntiTakeoverProvisionsMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "AntiTakeoverProvisionsMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Anti Takeover Provisions [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherTransactionFeesBasisMaximum": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionFeesBasisMaximum",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Fees Basis, Maximum"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_BasisOfTransactionFeesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "BasisOfTransactionFeesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Basis of Transaction Fees, Note [Text Block]"
}
}
},
"auth_ref": [
"r124"
]
},
"dei_PostEffectiveAmendment": {
"xbrltype": "booleanItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "PostEffectiveAmendment",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Post-Effective Amendment"
}
}
},
"auth_ref": [
"r86"
]
},
"cef_OtherTransactionFeesBasisMaximumPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionFeesBasisMaximumPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Fees Basis, Maximum [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_OtherTransactionFeesBasisNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionFeesBasisNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Fees Basis, Note [Text Block]"
}
}
},
"auth_ref": [
"r125"
]
},
"dei_PostEffectiveAmendmentNumber": {
"xbrltype": "sequenceNumberItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "PostEffectiveAmendmentNumber",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Post-Effective Amendment Number",
"documentation": "Amendment number to registration statement under the Securities Act of 1933 after the registration becomes effective."
}
}
},
"auth_ref": [
"r86"
]
},
"cef_OtherTransactionFeesNoteTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionFeesNoteTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Fees, Note [Text Block]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_InterestExpensesOnBorrowingsPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "InterestExpensesOnBorrowingsPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Interest Expenses on Borrowings [Percent]"
}
}
},
"auth_ref": [
"r129"
]
},
"us-gaap_NetAssetValuePerShare": {
"xbrltype": "perShareItemType",
"nsuri": "http://fasb.org/us-gaap/2023",
"localname": "NetAssetValuePerShare",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "NAV Per Share",
"documentation": "Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure."
}
}
},
"auth_ref": [
"r0",
"r1",
"r2",
"r61",
"r68",
"r69",
"r71",
"r72",
"r75",
"r85"
]
},
"cef_LongTermDebtIssuanceAndSubstitutionTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtIssuanceAndSubstitutionTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Issuance and Substitution [Text Block]"
}
}
},
"auth_ref": [
"r108"
]
},
"cef_LongTermDebtRightsLimitedByOtherSecuritiesTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LongTermDebtRightsLimitedByOtherSecuritiesTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Long Term Debt, Rights Limited by Other Securities [Text Block]"
}
}
},
"auth_ref": [
"r109"
]
},
"cef_OtherMasterFundExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherMasterFundExpensesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Master Fund Expenses [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cef_DividendReinvestmentAndCashPurchaseFees": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "DividendReinvestmentAndCashPurchaseFees",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Dividend Reinvestment and Cash Purchase Fees"
}
}
},
"auth_ref": [
"r116"
]
},
"cef_OtherSecuritiesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherSecuritiesTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Securities [Table Text Block]"
}
}
},
"auth_ref": [
"r110"
]
},
"cef_OtherTransactionExpense3Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionExpense3Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Te": {
"parentTag": "cef_OtherTransactionExpensesPercent",
"weight": 1.0,
"order": 3.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Expense 3 [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_OtherSecurityTitleTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherSecurityTitleTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Security, Title [Text Block]"
}
}
},
"auth_ref": [
"r110"
]
},
"cik0001090116_IlliquidInvestmentsRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "IlliquidInvestmentsRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Illiquid Investments Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherSecurityDescriptionTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherSecurityDescriptionTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Security, Description [Text Block]"
}
}
},
"auth_ref": [
"r110"
]
},
"cef_UnderwritersCompensationPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "UnderwritersCompensationPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Underwriters Compensation [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"dei_EntityWellKnownSeasonedIssuer": {
"xbrltype": "yesNoItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "EntityWellKnownSeasonedIssuer",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Entity Well-known Seasoned Issuer",
"documentation": "Indicate 'Yes' or 'No' if the registrant is a well-known seasoned issuer, as defined in Rule 405 of the Securities Act. Is used on Form Type: 10-K, 10-Q, 8-K, 20-F, 6-K, 10-K/A, 10-Q/A, 20-F/A, 6-K/A, N-CSR, N-Q, N-1A."
}
}
},
"auth_ref": [
"r164"
]
},
"cef_OtherTransactionExpensesAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionExpensesAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Expenses [Abstract]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_OtherTransactionExpense1Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionExpense1Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Te": {
"parentTag": "cef_OtherTransactionExpensesPercent",
"weight": 1.0,
"order": 1.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Expense 1 [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_OtherTransactionExpense2Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionExpense2Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Te": {
"parentTag": "cef_OtherTransactionExpensesPercent",
"weight": 1.0,
"order": 2.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Expense 2 [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_ProspectusTable": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ProspectusTable",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Prospectus:"
}
}
},
"auth_ref": [
"r91"
]
},
"cik0001090116_PrivatelyNegotiatedTransactionMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "PrivatelyNegotiatedTransactionMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Privately Negotiated Transaction [Member]"
}
}
},
"auth_ref": [
]
},
"cef_WarrantsOrRightsCalledPeriodDate": {
"xbrltype": "dateItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "WarrantsOrRightsCalledPeriodDate",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Warrants or Rights, Called Period [Date]"
}
}
},
"auth_ref": [
"r110"
]
},
"cik0001090116_CommonSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CommonSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Common Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cef_WarrantsOrRightsCalledAmount": {
"xbrltype": "monetaryItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "WarrantsOrRightsCalledAmount",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Warrants or Rights, Called Amount"
}
}
},
"auth_ref": [
"r110"
]
},
"cef_OtherTransactionExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherTransactionExpensesPercent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Te": {
"parentTag": null,
"weight": null,
"order": null,
"root": true
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Transaction Expenses [Percent]"
}
}
},
"auth_ref": [
"r125"
]
},
"cef_WarrantsOrRightsCalledTitleTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "WarrantsOrRightsCalledTitleTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Warrants or Rights, Called Title"
}
}
},
"auth_ref": [
"r110"
]
},
"cik0001090116_MunifundTermPreferredSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "MunifundTermPreferredSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "MuniFund Term Preferred (MTP) Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cef_AnnualExpensesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "AnnualExpensesTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Annual Expenses [Table Text Block]"
}
}
},
"auth_ref": [
"r126"
]
},
"cik0001090116_EconomicSectorRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "EconomicSectorRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Economic Sector Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_LowestPriceOrBidNav": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LowestPriceOrBidNav",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Lowest Price or Bid, NAV"
}
}
},
"auth_ref": [
"r154"
]
},
"cik0001090116_InverseFloatingRateSecuritiesRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "InverseFloatingRateSecuritiesRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Inverse Floating Rate Securities Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_HedgingRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "HedgingRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Hedging Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_WarrantsOrRightsExercisePrice": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "WarrantsOrRightsExercisePrice",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Warrants or Rights, Exercise Price"
}
}
},
"auth_ref": [
"r110"
]
},
"cef_ManagementFeesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ManagementFeesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Management Fees [Percent]"
}
}
},
"auth_ref": [
"r127"
]
},
"cef_OutstandingSecuritiesTableTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OutstandingSecuritiesTableTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Outstanding Securities [Table Text Block]"
}
}
},
"auth_ref": [
"r111"
]
},
"dei_CoverAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/dei/2023",
"localname": "CoverAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Cover [Abstract]",
"documentation": "Cover page."
}
}
},
"auth_ref": [
]
},
"cef_HighestPriceOrBidNav": {
"xbrltype": "perShareItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "HighestPriceOrBidNav",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Highest Price or Bid, NAV"
}
}
},
"auth_ref": [
"r154"
]
},
"cik0001090116_FinancialFuturesAndOptionsTransactionsRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "FinancialFuturesAndOptionsTransactionsRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Financial Futures and Options Transactions Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OutstandingSecurityAuthorizedShares": {
"xbrltype": "sharesItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OutstandingSecurityAuthorizedShares",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Outstanding Security, Authorized [Shares]"
}
}
},
"auth_ref": [
"r113"
]
},
"cef_OutstandingSecurityTitleTextBlock": {
"xbrltype": "textBlockItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OutstandingSecurityTitleTextBlock",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Outstanding Security, Title [Text Block]"
}
}
},
"auth_ref": [
"r112"
]
},
"cef_OutstandingSecurityNotHeldShares": {
"xbrltype": "sharesItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OutstandingSecurityNotHeldShares",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Outstanding Security, Not Held [Shares]"
}
}
},
"auth_ref": [
"r115"
]
},
"cef_OutstandingSecurityHeldShares": {
"xbrltype": "sharesItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OutstandingSecurityHeldShares",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Outstanding Security, Held [Shares]"
}
}
},
"auth_ref": [
"r114"
]
},
"cik0001090116_DurationRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "DurationRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Duration Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_DividendAndInterestExpensesOnShortSalesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "DividendAndInterestExpensesOnShortSalesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Dividend and Interest Expenses on Short Sales [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_UnderwritingSyndicateTransactionMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "UnderwritingSyndicateTransactionMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Underwriting Syndicate Transaction [Member]"
}
}
},
"auth_ref": [
]
},
"cef_IncentiveFeesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "IncentiveFeesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Incentive Fees [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_MunifundPreferredSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "MunifundPreferredSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "MuniFund Preferred Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cef_ProspectusLineItems": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "ProspectusLineItems",
"lang": {
"en-us": {
"role": {
"label": "Prospectus [Line Items]"
}
}
},
"auth_ref": [
"r91"
]
},
"cef_DistributionServicingFeesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "DistributionServicingFeesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Distribution/Servicing Fees [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cef_LowestPriceOrBidPremiumDiscountToNavPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LowestPriceOrBidPremiumDiscountToNavPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Lowest Price or Bid, Premium (Discount) to NAV [Percent]"
}
}
},
"auth_ref": [
"r155"
]
},
"cik0001090116_AdjustableRateMunifundTermPreferredSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "AdjustableRateMunifundTermPreferredSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Adjustable Rate MuniFund Term Preferred Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherAnnualExpense1Percent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherAnnualExpense1Percent",
"calculation": {
"http://xbrl.sec.gov/cef/role/Item3Ae": {
"parentTag": "cef_OtherAnnualExpensesPercent",
"weight": 1.0,
"order": 1.0
}
},
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Annual Expense 1 [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_InflationRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "InflationRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Inflation Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_VariableRateDemandPreferredSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "VariableRateDemandPreferredSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Variable Rate Demand Preferred Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_VariableRateMunifundTermPreferredSharesMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "VariableRateMunifundTermPreferredSharesMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Variable Rate MuniFund Term Preferred Shares [Member]"
}
}
},
"auth_ref": [
]
},
"cef_LoanServicingFeesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "LoanServicingFeesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Loan Servicing Fees [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_CallRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CallRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Call Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_BelowInvestmentGradeRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "BelowInvestmentGradeRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Below Investment Grade Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherFeederFundExpensesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherFeederFundExpensesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Feeder Fund Expenses [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_MunicipalSecuritiesMarketLiquidityRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "MunicipalSecuritiesMarketLiquidityRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Municipal Securities Market Liquidity Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_HighestPriceOrBidPremiumDiscountToNavPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "HighestPriceOrBidPremiumDiscountToNavPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Highest Price or Bid, Premium (Discount) to NAV [Percent]"
}
}
},
"auth_ref": [
"r155"
]
},
"cik0001090116_CreditSpreadRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "CreditSpreadRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Credit Spread Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_DividendExpenseOnPreferredSharesPercent": {
"xbrltype": "percentItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "DividendExpenseOnPreferredSharesPercent",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Dividend Expenses on Preferred Shares [Percent]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_LeverageRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "LeverageRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Leverage Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_DistressedOrDefaultedSecuritiesRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "DistressedOrDefaultedSecuritiesRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Distressed or Defaulted Securities Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cik0001090116_DeflationRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "DeflationRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Deflation Risk [Member]"
}
}
},
"auth_ref": [
]
},
"cef_OtherAnnualExpensesAbstract": {
"xbrltype": "stringItemType",
"nsuri": "http://xbrl.sec.gov/cef/2023",
"localname": "OtherAnnualExpensesAbstract",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Other Annual Expenses [Abstract]"
}
}
},
"auth_ref": [
"r130"
]
},
"cik0001090116_DerivativesRiskMember": {
"xbrltype": "domainItemType",
"nsuri": "http://www.nuv.com/20231031",
"localname": "DerivativesRiskMember",
"presentation": [
"http://xbrl.sec.gov/cef/role/N2"
],
"lang": {
"en-us": {
"role": {
"label": "Derivatives Risk [Member]"
}
}
},
"auth_ref": [
]
}
}
}
},
"std_ref": {
"r0": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Section": "35",
"Paragraph": "54B",
"SubTopic": "10",
"Topic": "820",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482134/820-10-35-54B"
},
"r1": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Section": "35",
"Paragraph": "59",
"SubTopic": "10",
"Topic": "820",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482134/820-10-35-59"
},
"r2": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "6A",
"SubTopic": "10",
"Topic": "820",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482106/820-10-50-6A"
},
"r3": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(22))",
"SubTopic": "10",
"Topic": "210",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r4": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Topic": "210",
"SubTopic": "10",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02.22)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r5": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Topic": "505",
"SubTopic": "10",
"Section": "50",
"Paragraph": "3",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-3"
},
"r6": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Name": "Accounting Standards Codification",
"Topic": "505",
"SubTopic": "10",
"Section": "50",
"Paragraph": "4",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-4"
},
"r7": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(19))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r8": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(20))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r9": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(28))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r10": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Topic": "942",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.9-03(13))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479853/942-210-S99-1"
},
"r11": {
"role": "http://fasb.org/us-gaap/role/ref/legacyRef",
"Topic": "942",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.9-03(16))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479853/942-210-S99-1"
},
"r12": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Name": "Regulation S-K (SK)",
"Number": "229",
"Section": "1402",
"Paragraph": "(a)",
"Publisher": "SEC"
},
"r13": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(27)(b))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r14": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(28))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r15": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "210",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.5-02(29))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480566/210-10-S99-1"
},
"r16": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "235",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.4-08(g)(1)(ii))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480678/235-10-S99-1"
},
"r17": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "235",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.12-04(a))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480678/235-10-S99-3"
},
"r18": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "260",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "2",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482689/260-10-45-2"
},
"r19": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "260",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "3",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482689/260-10-45-3"
},
"r20": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "260",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "60B",
"Subparagraph": "(d)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482689/260-10-45-60B"
},
"r21": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "260",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482662/260-10-50-1"
},
"r22": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "272",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482987/272-10-50-1"
},
"r23": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "272",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "3",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482987/272-10-50-3"
},
"r24": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "323",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "3",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481687/323-10-50-3"
},
"r25": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1A",
"Subparagraph": "(SX 210.13-01(a)(4)(i))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1A"
},
"r26": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1A",
"Subparagraph": "(SX 210.13-01(a)(4)(iv))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1A"
},
"r27": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1A",
"Subparagraph": "(SX 210.13-01(a)(5))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1A"
},
"r28": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1B",
"Subparagraph": "(SX 210.13-02(a)(4)(i))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1B"
},
"r29": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1B",
"Subparagraph": "(SX 210.13-02(a)(4)(iv))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1B"
},
"r30": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1B",
"Subparagraph": "(SX 210.13-02(a)(5))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480097/470-10-S99-1B"
},
"r31": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r32": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r33": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r34": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(e)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r35": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(f)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r36": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(h)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r37": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1D",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1D"
},
"r38": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1D",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1D"
},
"r39": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1D",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1D"
},
"r40": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1E",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1E"
},
"r41": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1E",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1E"
},
"r42": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1E",
"Subparagraph": "(d)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1E"
},
"r43": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1F",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1F"
},
"r44": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1F",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1F"
},
"r45": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1F",
"Subparagraph": "(b)(1)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1F"
},
"r46": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1F",
"Subparagraph": "(b)(2)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1F"
},
"r47": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "13",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-13"
},
"r48": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "13",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-13"
},
"r49": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "13",
"Subparagraph": "(h)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-13"
},
"r50": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "14",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-14"
},
"r51": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-2"
},
"r52": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "825",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "28",
"Subparagraph": "(f)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482907/825-10-50-28"
},
"r53": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "835",
"SubTopic": "30",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482900/835-30-50-1"
},
"r54": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.6-03(i)(1))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479886/946-10-S99-3"
},
"r55": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.6-03(i)(2)(i))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479886/946-10-S99-3"
},
"r56": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.6-03(i)(2)(ii))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479886/946-10-S99-3"
},
"r57": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.6-03(i)(2))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479886/946-10-S99-3"
},
"r58": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "4",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480767/946-205-45-4"
},
"r59": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-2"
},
"r60": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "27",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-27"
},
"r61": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r62": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r63": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r64": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(d)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r65": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(e)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r66": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(f)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r67": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(g)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r68": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "205",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "7",
"Subparagraph": "(h)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480737/946-205-50-7"
},
"r69": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "4",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480555/946-210-45-4"
},
"r70": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.6-04(16)(a))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479617/946-210-S99-1"
},
"r71": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.6-04(19))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479617/946-210-S99-1"
},
"r72": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "210",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "2",
"Subparagraph": "(SX 210.6-05(4))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147479617/946-210-S99-2"
},
"r73": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "220",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "3",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147483580/946-220-50-3"
},
"r74": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "220",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "3",
"Subparagraph": "(SX 210.6-09(4)(b))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147483575/946-220-S99-3"
},
"r75": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "505",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481004/946-505-50-1"
},
"r76": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "505",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Subparagraph": "(a)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481004/946-505-50-2"
},
"r77": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "505",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481004/946-505-50-2"
},
"r78": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "505",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Subparagraph": "(c)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481004/946-505-50-2"
},
"r79": {
"role": "http://www.xbrl.org/2003/role/disclosureRef",
"Topic": "946",
"SubTopic": "505",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "2",
"Subparagraph": "(d)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481004/946-505-50-2"
},
"r80": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "1B",
"Subparagraph": "(d)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481139/470-20-50-1B"
},
"r81": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "55",
"Paragraph": "69B",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481568/470-20-55-69B"
},
"r82": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "55",
"Paragraph": "69C",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481568/470-20-55-69C"
},
"r83": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "55",
"Paragraph": "69E",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481568/470-20-55-69E"
},
"r84": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "470",
"SubTopic": "20",
"Name": "Accounting Standards Codification",
"Section": "55",
"Paragraph": "69F",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481568/470-20-55-69F"
},
"r85": {
"role": "http://www.xbrl.org/2003/role/exampleRef",
"Topic": "946",
"SubTopic": "830",
"Name": "Accounting Standards Codification",
"Section": "55",
"Paragraph": "12",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480167/946-830-55-12"
},
"r86": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Exchange Act",
"Number": "240",
"Section": "12"
},
"r87": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Exchange Act",
"Number": "240",
"Section": "12",
"Subsection": "b-2"
},
"r88": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form 20-F",
"Number": "249",
"Section": "220",
"Subsection": "f"
},
"r89": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form 40-F",
"Number": "249",
"Section": "240",
"Subsection": "f"
},
"r90": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form F-3"
},
"r91": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2"
},
"r92": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10"
},
"r93": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a"
},
"r94": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "1"
},
"r95": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "2"
},
"r96": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "3"
},
"r97": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "4"
},
"r98": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "5"
},
"r99": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "6"
},
"r100": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "a",
"Subparagraph": "Instruction 2"
},
"r101": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "b",
"Subparagraph": "1"
},
"r102": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "b",
"Subparagraph": "2"
},
"r103": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "c"
},
"r104": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "1",
"Paragraph": "d"
},
"r105": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "2"
},
"r106": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "2",
"Paragraph": "a"
},
"r107": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "2",
"Paragraph": "b"
},
"r108": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "2",
"Paragraph": "c"
},
"r109": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "2",
"Paragraph": "e"
},
"r110": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "3"
},
"r111": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "5"
},
"r112": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "5",
"Paragraph": "1"
},
"r113": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "5",
"Paragraph": "2"
},
"r114": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "5",
"Paragraph": "3"
},
"r115": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 10",
"Subsection": "5",
"Paragraph": "4"
},
"r116": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1"
},
"r117": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 1"
},
"r118": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 10",
"Subparagraph": "a"
},
"r119": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 10",
"Subparagraph": "a, g, h"
},
"r120": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 10",
"Subparagraph": "f"
},
"r121": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 10",
"Subparagraph": "g"
},
"r122": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 10",
"Subparagraph": "i"
},
"r123": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 11"
},
"r124": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 4"
},
"r125": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 5"
},
"r126": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 6"
},
"r127": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 7",
"Subparagraph": "a"
},
"r128": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 7",
"Subparagraph": "b"
},
"r129": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 8"
},
"r130": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 3",
"Subsection": "1",
"Paragraph": "Instruction 9"
},
"r131": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4"
},
"r132": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "1",
"Paragraph": "Instruction 2"
},
"r133": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "1",
"Paragraph": "Instruction 3"
},
"r134": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "1",
"Paragraph": "Instruction 8"
},
"r135": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3"
},
"r136": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "2"
},
"r137": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "3",
"Subparagraph": "Instruction 2"
},
"r138": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "4",
"Subparagraph": "Instruction 3"
},
"r139": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "5"
},
"r140": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "Instruction 1"
},
"r141": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "Instruction 4"
},
"r142": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 4",
"Subsection": "3",
"Paragraph": "Instruction 5"
},
"r143": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8"
},
"r144": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "2",
"Paragraph": "b, d"
},
"r145": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "3",
"Paragraph": "a"
},
"r146": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "3",
"Paragraph": "b"
},
"r147": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "3",
"Paragraph": "b",
"Subparagraph": "1"
},
"r148": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "3",
"Paragraph": "b",
"Subparagraph": "2"
},
"r149": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "3",
"Paragraph": "b",
"Subparagraph": "3"
},
"r150": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b"
},
"r151": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b",
"Subparagraph": "4"
},
"r152": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b",
"Subparagraph": "Instruction 2"
},
"r153": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b",
"Subparagraph": "Instruction 3"
},
"r154": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b",
"Subparagraph": "Instruction 4"
},
"r155": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "b",
"Subparagraph": "Instructions 4, 5"
},
"r156": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "c"
},
"r157": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-2",
"Section": "Item 8",
"Subsection": "5",
"Paragraph": "e"
},
"r158": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-3"
},
"r159": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-4"
},
"r160": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form N-6"
},
"r161": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Form S-3"
},
"r162": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Investment Company Act",
"Number": "270"
},
"r163": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Regulation S-T",
"Number": "232",
"Section": "313"
},
"r164": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "405"
},
"r165": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "413",
"Subsection": "b"
},
"r166": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "462",
"Subsection": "b"
},
"r167": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "462",
"Subsection": "c"
},
"r168": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "462",
"Subsection": "d"
},
"r169": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "462",
"Subsection": "e"
},
"r170": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "486",
"Subsection": "a"
},
"r171": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "230",
"Section": "486",
"Subsection": "b"
},
"r172": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Number": "7A",
"Section": "B",
"Subsection": "2"
},
"r173": {
"role": "http://www.xbrl.org/2003/role/presentationRef",
"Publisher": "SEC",
"Name": "Securities Act",
"Section": "8",
"Subsection": "c"
},
"r174": {
"role": "http://www.xbrl.org/2003/role/recommendedDisclosureRef",
"Topic": "272",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "3",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147483014/272-10-45-3"
},
"r175": {
"role": "http://www.xbrl.org/2009/role/commonPracticeRef",
"Topic": "235",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.4-08(d))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480678/235-10-S99-1"
},
"r176": {
"role": "http://www.xbrl.org/2009/role/commonPracticeRef",
"Topic": "235",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "S99",
"Paragraph": "1",
"Subparagraph": "(SX 210.4-08(f))",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147480678/235-10-S99-1"
},
"r177": {
"role": "http://www.xbrl.org/2009/role/commonPracticeRef",
"Topic": "260",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "45",
"Paragraph": "55",
"Subparagraph": "(b)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147482689/260-10-45-55"
},
"r178": {
"role": "http://www.xbrl.org/2009/role/commonPracticeRef",
"Topic": "505",
"SubTopic": "10",
"Name": "Accounting Standards Codification",
"Section": "50",
"Paragraph": "13",
"Subparagraph": "(h)",
"Publisher": "FASB",
"URI": "https://asc.fasb.org//1943274/2147481112/505-10-50-13"
}
}
} |
