| | | | | | | | | | | | | | | | | | | | | |
<?xml version="1.0" encoding="windows-1252"?> |
<FilingSummary> |
| <Version> 3.19.3.a.u2 </Version> |
| <ProcessingTime/> |
| <ReportFormat> html </ReportFormat> |
| <ContextCount> 281 </ContextCount> |
| <ElementCount> 378 </ElementCount> |
| <EntityCount> 1 </EntityCount> |
| <FootnotesReported> false </FootnotesReported> |
| <SegmentCount> 64 </SegmentCount> |
| <ScenarioCount> 0 </ScenarioCount> |
| <TuplesReported> false </TuplesReported> |
| <UnitCount> 6 </UnitCount> |
| <MyReports> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R1.htm </HtmlFileName> |
| | | <LongName> 0001001 - Document - Cover Page </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CoverPage </Role> |
| | | <ShortName> Cover Page </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 1 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R2.htm </HtmlFileName> |
| | | <LongName> 1001002 - Statement - Condensed Consolidated Statements of Earnings </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofEarnings </Role> |
| | | <ShortName> Condensed Consolidated Statements of Earnings </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 2 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R3.htm </HtmlFileName> |
| | | <LongName> 1002003 - Statement - Condensed Consolidated Statements of Comprehensive Income </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofComprehensiveIncome </Role> |
| | | <ShortName> Condensed Consolidated Statements of Comprehensive Income </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 3 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R4.htm </HtmlFileName> |
| | | <LongName> 1003004 - Statement - Condensed Consolidated Statements of Comprehensive Income (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofComprehensiveIncomeParenthetical </Role> |
| | | <ShortName> Condensed Consolidated Statements of Comprehensive Income (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 4 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R5.htm </HtmlFileName> |
| | | <LongName> 1004005 - Statement - Condensed Consolidated Balance Sheets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedBalanceSheets </Role> |
| | | <ShortName> Condensed Consolidated Balance Sheets </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 5 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R6.htm </HtmlFileName> |
| | | <LongName> 1005006 - Statement - Condensed Consolidated Balance Sheets (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedBalanceSheetsParenthetical </Role> |
| | | <ShortName> Condensed Consolidated Balance Sheets (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 6 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R7.htm </HtmlFileName> |
| | | <LongName> 1006007 - Statement - Condensed Consolidated Statements of Cash Flows </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofCashFlows </Role> |
| | | <ShortName> Condensed Consolidated Statements of Cash Flows </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 7 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R8.htm </HtmlFileName> |
| | | <LongName> 1007008 - Statement - Condensed Consolidated Statements of Stockholders??? Equity </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofStockholdersEquity </Role> |
| | | <ShortName> Condensed Consolidated Statements of Stockholders??? Equity </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 8 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9.htm </HtmlFileName> |
| | | <LongName> 1008009 - Statement - Condensed Consolidated Statements of Stockholders??? Equity (Parenthetical) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/CondensedConsolidatedStatementsofStockholdersEquityParenthetical </Role> |
| | | <ShortName> Condensed Consolidated Statements of Stockholders??? Equity (Parenthetical) </ShortName> |
| | | <MenuCategory> Statements </MenuCategory> |
| | | <Position> 9 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R10.htm </HtmlFileName> |
| | | <LongName> 2101101 - Disclosure - Basis of Presentation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BasisofPresentation </Role> |
| | | <ShortName> Basis of Presentation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 10 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R11.htm </HtmlFileName> |
| | | <LongName> 2104102 - Disclosure - New Accounting Pronouncements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/NewAccountingPronouncements </Role> |
| | | <ShortName> New Accounting Pronouncements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 11 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R12.htm </HtmlFileName> |
| | | <LongName> 2106103 - Disclosure - Revenue Recognition </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/RevenueRecognition </Role> |
| | | <ShortName> Revenue Recognition </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 12 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R13.htm </HtmlFileName> |
| | | <LongName> 2111104 - Disclosure - Weighted-Average Shares Outstanding </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/WeightedAverageSharesOutstanding </Role> |
| | | <ShortName> Weighted-Average Shares Outstanding </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 13 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R14.htm </HtmlFileName> |
| | | <LongName> 2115105 - Disclosure - Interest Expense, Net </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterestExpenseNet </Role> |
| | | <ShortName> Interest Expense, Net </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 14 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R15.htm </HtmlFileName> |
| | | <LongName> 2118106 - Disclosure - Acquisitions </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/Acquisitions </Role> |
| | | <ShortName> Acquisitions </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 15 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R16.htm </HtmlFileName> |
| | | <LongName> 2122107 - Disclosure - Fair Value of Financial Instruments </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/FairValueofFinancialInstruments </Role> |
| | | <ShortName> Fair Value of Financial Instruments </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 16 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R17.htm </HtmlFileName> |
| | | <LongName> 2127108 - Disclosure - Leases </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/Leases </Role> |
| | | <ShortName> Leases </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 17 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R18.htm </HtmlFileName> |
| | | <LongName> 2135109 - Disclosure - Other Non-Current Assets </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentAssets </Role> |
| | | <ShortName> Other Non-Current Assets </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 18 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R19.htm </HtmlFileName> |
| | | <LongName> 2138110 - Disclosure - Payables and Accrued Expenses </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/PayablesandAccruedExpenses </Role> |
| | | <ShortName> Payables and Accrued Expenses </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 19 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R20.htm </HtmlFileName> |
| | | <LongName> 2141111 - Disclosure - Borrowings </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/Borrowings </Role> |
| | | <ShortName> Borrowings </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 20 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R21.htm </HtmlFileName> |
| | | <LongName> 2146112 - Disclosure - Other Non-Current Liabilities </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentLiabilities </Role> |
| | | <ShortName> Other Non-Current Liabilities </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 21 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R22.htm </HtmlFileName> |
| | | <LongName> 2149113 - Disclosure - Stock-Based Compensation </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/StockBasedCompensation </Role> |
| | | <ShortName> Stock-Based Compensation </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 22 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R23.htm </HtmlFileName> |
| | | <LongName> 2153114 - Disclosure - Income Taxes </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/IncomeTaxes </Role> |
| | | <ShortName> Income Taxes </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 23 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R24.htm </HtmlFileName> |
| | | <LongName> 2155115 - Disclosure - Contractual Commitments, Contingencies and Off-Balance Sheet Arrangements </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/ContractualCommitmentsContingenciesandOffBalanceSheetArrangements </Role> |
| | | <ShortName> Contractual Commitments, Contingencies and Off-Balance Sheet Arrangements </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 24 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R25.htm </HtmlFileName> |
| | | <LongName> 2157116 - Disclosure - Changes in Accumulated Other Comprehensive Income/(Loss) by Component </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/ChangesinAccumulatedOtherComprehensiveIncomeLossbyComponent </Role> |
| | | <ShortName> Changes in Accumulated Other Comprehensive Income/(Loss) by Component </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 25 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R26.htm </HtmlFileName> |
| | | <LongName> 2160117 - Disclosure - Interim Financial Data by Segment </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterimFinancialDatabySegment </Role> |
| | | <ShortName> Interim Financial Data by Segment </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 26 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R27.htm </HtmlFileName> |
| | | <LongName> 2164118 - Disclosure - Subsequent Event </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/SubsequentEvent </Role> |
| | | <ShortName> Subsequent Event </ShortName> |
| | | <MenuCategory> Notes </MenuCategory> |
| | | <Position> 27 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R28.htm </HtmlFileName> |
| | | <LongName> 2202201 - Disclosure - Basis of Presentation (Policies) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BasisofPresentationPolicies </Role> |
| | | <ShortName> Basis of Presentation (Policies) </ShortName> |
| | | <MenuCategory> Policies </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/NewAccountingPronouncements </ParentRole> |
| | | <Position> 28 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R29.htm </HtmlFileName> |
| | | <LongName> 2307301 - Disclosure - Revenue Recognition (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/RevenueRecognitionTables </Role> |
| | | <ShortName> Revenue Recognition (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/RevenueRecognition </ParentRole> |
| | | <Position> 29 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R30.htm </HtmlFileName> |
| | | <LongName> 2312302 - Disclosure - Weighted-Average Shares Outstanding (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/WeightedAverageSharesOutstandingTables </Role> |
| | | <ShortName> Weighted-Average Shares Outstanding (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/WeightedAverageSharesOutstanding </ParentRole> |
| | | <Position> 30 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R31.htm </HtmlFileName> |
| | | <LongName> 2316303 - Disclosure - Interest Expense, Net (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterestExpenseNetTables </Role> |
| | | <ShortName> Interest Expense, Net (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/InterestExpenseNet </ParentRole> |
| | | <Position> 31 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R32.htm </HtmlFileName> |
| | | <LongName> 2319304 - Disclosure - Acquisitions (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/AcquisitionsTables </Role> |
| | | <ShortName> Acquisitions (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/Acquisitions </ParentRole> |
| | | <Position> 32 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R33.htm </HtmlFileName> |
| | | <LongName> 2323305 - Disclosure - Fair Value of Financial Instruments (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/FairValueofFinancialInstrumentsTables </Role> |
| | | <ShortName> Fair Value of Financial Instruments (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/FairValueofFinancialInstruments </ParentRole> |
| | | <Position> 33 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R34.htm </HtmlFileName> |
| | | <LongName> 2328306 - Disclosure - Leases (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesTables </Role> |
| | | <ShortName> Leases (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/Leases </ParentRole> |
| | | <Position> 34 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R35.htm </HtmlFileName> |
| | | <LongName> 2336307 - Disclosure - Other Non-Current Assets (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentAssetsTables </Role> |
| | | <ShortName> Other Non-Current Assets (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/OtherNonCurrentAssets </ParentRole> |
| | | <Position> 35 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R36.htm </HtmlFileName> |
| | | <LongName> 2339308 - Disclosure - Payables and Accrued Expenses (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/PayablesandAccruedExpensesTables </Role> |
| | | <ShortName> Payables and Accrued Expenses (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/PayablesandAccruedExpenses </ParentRole> |
| | | <Position> 36 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R37.htm </HtmlFileName> |
| | | <LongName> 2342309 - Disclosure - Borrowings (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BorrowingsTables </Role> |
| | | <ShortName> Borrowings (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/Borrowings </ParentRole> |
| | | <Position> 37 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R38.htm </HtmlFileName> |
| | | <LongName> 2347310 - Disclosure - Other Non-Current Liabilities (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentLiabilitiesTables </Role> |
| | | <ShortName> Other Non-Current Liabilities (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/OtherNonCurrentLiabilities </ParentRole> |
| | | <Position> 38 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R39.htm </HtmlFileName> |
| | | <LongName> 2350311 - Disclosure - Stock-Based Compensation (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/StockBasedCompensationTables </Role> |
| | | <ShortName> Stock-Based Compensation (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/StockBasedCompensation </ParentRole> |
| | | <Position> 39 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R40.htm </HtmlFileName> |
| | | <LongName> 2358312 - Disclosure - Changes in Accumulated Other Comprehensive Income/(Loss) by Component (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/ChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentTables </Role> |
| | | <ShortName> Changes in Accumulated Other Comprehensive Income/(Loss) by Component (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/ChangesinAccumulatedOtherComprehensiveIncomeLossbyComponent </ParentRole> |
| | | <Position> 40 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R41.htm </HtmlFileName> |
| | | <LongName> 2361313 - Disclosure - Interim Financial Data by Segment (Tables) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterimFinancialDatabySegmentTables </Role> |
| | | <ShortName> Interim Financial Data by Segment (Tables) </ShortName> |
| | | <MenuCategory> Tables </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/InterimFinancialDatabySegment </ParentRole> |
| | | <Position> 41 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R42.htm </HtmlFileName> |
| | | <LongName> 2403401 - Disclosure - Basis of Presentation - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BasisofPresentationAdditionalInformationDetails </Role> |
| | | <ShortName> Basis of Presentation - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 42 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R43.htm </HtmlFileName> |
| | | <LongName> 2405402 - Disclosure - New Accounting Pronouncements (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/NewAccountingPronouncementsDetails </Role> |
| | | <ShortName> New Accounting Pronouncements (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 43 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R44.htm </HtmlFileName> |
| | | <LongName> 2408403 - Disclosure - Revenue Recognition - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/RevenueRecognitionAdditionalInformationDetails </Role> |
| | | <ShortName> Revenue Recognition - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 44 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R45.htm </HtmlFileName> |
| | | <LongName> 2409404 - Disclosure - Revenue Recognition - Disaggregation of Revenue (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/RevenueRecognitionDisaggregationofRevenueDetails </Role> |
| | | <ShortName> Revenue Recognition - Disaggregation of Revenue (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 45 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R46.htm </HtmlFileName> |
| | | <LongName> 2410405 - Disclosure - Revenue Recognition - Contract Assets and Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/RevenueRecognitionContractAssetsandLiabilitiesDetails </Role> |
| | | <ShortName> Revenue Recognition - Contract Assets and Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 46 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R47.htm </HtmlFileName> |
| | | <LongName> 2413406 - Disclosure - Weighted-Average Shares Outstanding - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/WeightedAverageSharesOutstandingAdditionalInformationDetails </Role> |
| | | <ShortName> Weighted-Average Shares Outstanding - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 47 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R48.htm </HtmlFileName> |
| | | <LongName> 2414407 - Disclosure - Weighted-Average Shares Outstanding - Denominators of Basic and Diluted EPS Computations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/WeightedAverageSharesOutstandingDenominatorsofBasicandDilutedEPSComputationsDetails </Role> |
| | | <ShortName> Weighted-Average Shares Outstanding - Denominators of Basic and Diluted EPS Computations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 48 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R49.htm </HtmlFileName> |
| | | <LongName> 2417408 - Disclosure - Interest Expense, Net - Components of Interest Expense, Net (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterestExpenseNetComponentsofInterestExpenseNetDetails </Role> |
| | | <ShortName> Interest Expense, Net - Components of Interest Expense, Net (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 49 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R50.htm </HtmlFileName> |
| | | <LongName> 2420409 - Disclosure - Acquisitions - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/AcquisitionsAdditionalInformationDetails </Role> |
| | | <ShortName> Acquisitions - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 50 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R51.htm </HtmlFileName> |
| | | <LongName> 2421410 - Disclosure - Acquisitions - Schedule of Business Combinations (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/AcquisitionsScheduleofBusinessCombinationsDetails </Role> |
| | | <ShortName> Acquisitions - Schedule of Business Combinations (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 51 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R52.htm </HtmlFileName> |
| | | <LongName> 2424411 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/FairValueofFinancialInstrumentsSummaryofFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisDetails </Role> |
| | | <ShortName> Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 52 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R53.htm </HtmlFileName> |
| | | <LongName> 2425412 - Disclosure - Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/FairValueofFinancialInstrumentsSummaryofFinancialAssetsandLiabilitiesMeasuredatFairValueonRecurringBasisAdditionalInformationDetails </Role> |
| | | <ShortName> Fair Value of Financial Instruments - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 53 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R54.htm </HtmlFileName> |
| | | <LongName> 2426413 - Disclosure - Fair Value of Financial Instruments - Schedule of Changes in Level 3 Financial Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/FairValueofFinancialInstrumentsScheduleofChangesinLevel3FinancialLiabilitiesDetails </Role> |
| | | <ShortName> Fair Value of Financial Instruments - Schedule of Changes in Level 3 Financial Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 54 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R55.htm </HtmlFileName> |
| | | <LongName> 2429414 - Disclosure - Leases - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesNarrativeDetails </Role> |
| | | <ShortName> Leases - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 55 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R56.htm </HtmlFileName> |
| | | <LongName> 2430415 - Disclosure - Leases - Supplemental Balance Sheet Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesSupplementalBalanceSheetInformationDetails </Role> |
| | | <ShortName> Leases - Supplemental Balance Sheet Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 56 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R57.htm </HtmlFileName> |
| | | <LongName> 2431416 - Disclosure - Leases - Components of Lease Cost (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesComponentsofLeaseCostDetails </Role> |
| | | <ShortName> Leases - Components of Lease Cost (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 57 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R58.htm </HtmlFileName> |
| | | <LongName> 2432417 - Disclosure - Leases - Supplemental Cash Flow Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesSupplementalCashFlowInformationDetails </Role> |
| | | <ShortName> Leases - Supplemental Cash Flow Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 58 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R59.htm </HtmlFileName> |
| | | <LongName> 2433418 - Disclosure - Leases - Maturity of Lease Liabilities Under ASC 842 (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesMaturityofLeaseLiabilitiesUnderASC842Details </Role> |
| | | <ShortName> Leases - Maturity of Lease Liabilities Under ASC 842 (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 59 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R60.htm </HtmlFileName> |
| | | <LongName> 2434419 - Disclosure - Leases - Maturity of Lease Liabilities Under ASC 840 (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/LeasesMaturityofLeaseLiabilitiesUnderASC840Details </Role> |
| | | <ShortName> Leases - Maturity of Lease Liabilities Under ASC 840 (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 60 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R61.htm </HtmlFileName> |
| | | <LongName> 2437420 - Disclosure - Other Non-Current Assets - Schedule of Other Non-Current Assets (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentAssetsScheduleofOtherNonCurrentAssetsDetails </Role> |
| | | <ShortName> Other Non-Current Assets - Schedule of Other Non-Current Assets (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 61 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R62.htm </HtmlFileName> |
| | | <LongName> 2440421 - Disclosure - Payables and Accrued Expensess - Components of Accrued Expenses and Other Current Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/PayablesandAccruedExpensessComponentsofAccruedExpensesandOtherCurrentLiabilitiesDetails </Role> |
| | | <ShortName> Payables and Accrued Expensess - Components of Accrued Expenses and Other Current Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 62 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R63.htm </HtmlFileName> |
| | | <LongName> 2443422 - Disclosure - Borrowings - Schedule of Outstanding Borrowings (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BorrowingsScheduleofOutstandingBorrowingsDetails </Role> |
| | | <ShortName> Borrowings - Schedule of Outstanding Borrowings (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 63 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R64.htm </HtmlFileName> |
| | | <LongName> 2444423 - Disclosure - Borrowings - Future Principal Payments on the Company???s Outstanding Debt (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BorrowingsFuturePrincipalPaymentsontheCompanysOutstandingDebtDetails </Role> |
| | | <ShortName> Borrowings - Future Principal Payments on the Company???s Outstanding Debt (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 64 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R65.htm </HtmlFileName> |
| | | <LongName> 2445424 - Disclosure - Borrowings - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/BorrowingsAdditionalInformationDetails </Role> |
| | | <ShortName> Borrowings - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 65 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R66.htm </HtmlFileName> |
| | | <LongName> 2448425 - Disclosure - Other Non-Current Liabilities (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/OtherNonCurrentLiabilitiesDetails </Role> |
| | | <ShortName> Other Non-Current Liabilities (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <ParentRole> http://www.broadridge.com/role/OtherNonCurrentLiabilitiesTables </ParentRole> |
| | | <Position> 66 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R67.htm </HtmlFileName> |
| | | <LongName> 2451426 - Disclosure - Stock-Based Compensation - Summary of Incentive Equity Awards (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/StockBasedCompensationSummaryofIncentiveEquityAwardsDetails </Role> |
| | | <ShortName> Stock-Based Compensation - Summary of Incentive Equity Awards (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 67 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R68.htm </HtmlFileName> |
| | | <LongName> 2452427 - Disclosure - Stock-Based Compensation - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/StockBasedCompensationAdditionalInformationDetails </Role> |
| | | <ShortName> Stock-Based Compensation - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 68 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R69.htm </HtmlFileName> |
| | | <LongName> 2454428 - Disclosure - Income Taxes - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/IncomeTaxesAdditionalInformationDetails </Role> |
| | | <ShortName> Income Taxes - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 69 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R70.htm </HtmlFileName> |
| | | <LongName> 2456429 - Disclosure - Contractual Commitments, Contingencies and Off-Balance Sheet Arrangements - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/ContractualCommitmentsContingenciesandOffBalanceSheetArrangementsAdditionalInformationDetails </Role> |
| | | <ShortName> Contractual Commitments, Contingencies and Off-Balance Sheet Arrangements - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 70 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R71.htm </HtmlFileName> |
| | | <LongName> 2459430 - Disclosure - Changes in Accumulated Other Comprehensive Income/(Loss) by Component - Summary of Changes in Accumulated Balances for Each Component of Accumulated Other Comprehensive Income/(Loss) (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/ChangesinAccumulatedOtherComprehensiveIncomeLossbyComponentSummaryofChangesinAccumulatedBalancesforEachComponentofAccumulatedOtherComprehensiveIncomeLossDetails </Role> |
| | | <ShortName> Changes in Accumulated Other Comprehensive Income/(Loss) by Component - Summary of Changes in Accumulated Balances for Each Component of Accumulated Other Comprehensive Income/(Loss) (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 71 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R72.htm </HtmlFileName> |
| | | <LongName> 2462431 - Disclosure - Interim Financial Data by Segment - Additional Information (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterimFinancialDatabySegmentAdditionalInformationDetails </Role> |
| | | <ShortName> Interim Financial Data by Segment - Additional Information (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 72 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R73.htm </HtmlFileName> |
| | | <LongName> 2463432 - Disclosure - Interim Financial Data by Segment - Segment Results (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/InterimFinancialDatabySegmentSegmentResultsDetails </Role> |
| | | <ShortName> Interim Financial Data by Segment - Segment Results (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 73 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R74.htm </HtmlFileName> |
| | | <LongName> 2465433 - Disclosure - Subsequent Event - Narrative (Details) </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://www.broadridge.com/role/SubsequentEventNarrativeDetails </Role> |
| | | <ShortName> Subsequent Event - Narrative (Details) </ShortName> |
| | | <MenuCategory> Details </MenuCategory> |
| | | <Position> 74 </Position> |
| | | </Report> |
| | <Report instance="br-20191231.htm"> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <HtmlFileName> R9999.htm </HtmlFileName> |
| | | <LongName> Uncategorized Items - br-20191231.htm </LongName> |
| | | <ReportType> Sheet </ReportType> |
| | | <Role> http://xbrl.sec.gov/role/uncategorizedFacts </Role> |
| | | <ShortName> Uncategorized Items - br-20191231.htm </ShortName> |
| | | <MenuCategory> Cover </MenuCategory> |
| | | <Position> 75 </Position> |
| | | </Report> |
| | <Report> |
| | | <IsDefault> false </IsDefault> |
| | | <HasEmbeddedReports> false </HasEmbeddedReports> |
| | | <LongName> All Reports </LongName> |
| | | <ReportType> Book </ReportType> |
| | | <ShortName> All Reports </ShortName> |
| | | </Report> |
| | </MyReports> |
| <InputFiles> |
| | <File doctype="10-Q" original="br-20191231.htm"> br-20191231.htm </File> |
| | <File> br-20191231.xsd </File> |
| | <File> br-20191231_cal.xml </File> |
| | <File> br-20191231_def.xml </File> |
| | <File> br-20191231_lab.xml </File> |
| | <File> br-20191231_pre.xml </File> |
| | <File> ex31110-q2q2020.htm </File> |
| | <File> ex31210-q2q2020.htm </File> |
| | <File> ex32110-q2q2020.htm </File> |
| | <File> ex32210-q2q2020.htm </File> |
| | <File> exhibit101ibmaritagmt1.htm </File> |
| | <File> exhibit102ibmmsaagreem.htm </File> |
| | </InputFiles> |
| <SupplementalFiles/> |
| <BaseTaxonomies> |
| | <BaseTaxonomy> http://fasb.org/us-gaap/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://xbrl.sec.gov/dei/2019-01-31 </BaseTaxonomy> |
| | <BaseTaxonomy> http://fasb.org/srt/2019-01-31 </BaseTaxonomy> |
| | </BaseTaxonomies> |
| <HasPresentationLinkbase> true </HasPresentationLinkbase> |
| <HasCalculationLinkbase> true </HasCalculationLinkbase> |
| </FilingSummary> |