Document/ExhibitDescriptionPagesSize
1: 10-K Annual Report HTML 1.02M
2: EX-10.46 Material Contract HTML 80K
3: EX-10.47 Material Contract HTML 1.77M
4: EX-13.01 Annual or Quarterly Report to Security Holders HTML 3.83M
5: EX-21.01 Subsidiaries List HTML 52K
6: EX-23.01 Consent of Expert or Counsel HTML 36K
7: EX-23.02 Consent of Expert or Counsel HTML 36K
8: EX-31.01 Certification -- §302 - SOA'02 HTML 49K
9: EX-31.02 Certification -- §302 - SOA'02 HTML 52K
10: EX-32.01 Certification -- §906 - SOA'02 HTML 40K
11: EX-32.02 Certification -- §906 - SOA'02 HTML 43K
17: R1 Cover HTML 116K
18: R2 Audit Information HTML 44K
19: R3 Consolidated Balance Sheets HTML 172K
20: R4 Consolidated Balance Sheets (Parenthetical) HTML 45K
21: R5 Consolidated Statements of Income HTML 129K
22: R6 Consolidated Statements of Comprehensive Income HTML 91K
23: R7 Consolidated Statements of Cash Flows HTML 140K
24: R8 Consolidated Statements of Equity HTML 91K
25: R9 CONSOLIDATED BALANCE SHEETS - Southwest HTML 176K
26: R10 CONSOLIDATED STATEMENTS OF INCOME - Southwest HTML 90K
27: R11 CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - HTML 85K
Southwest
28: R12 CONSOLIDATED STATEMENTS OF CASH FLOWS - Southwest HTML 144K
29: R13 CONSOLIDATED STATEMENTS OF EQUITY - Southwest HTML 77K
30: R14 Background, Organization, and Summary of HTML 192K
Significant Accounting Policies
31: R15 Regulated Operations Plant and Leases HTML 127K
32: R16 Revenue HTML 131K
33: R17 Receivables and Related Allowances HTML 60K
34: R18 Regulatory Assets and Liabilities HTML 108K
35: R19 Other Comprehensive Income and Accumulated Other HTML 208K
Comprehensive Income ("Aoci")
36: R20 Common Stock HTML 48K
37: R21 Debt HTML 173K
38: R22 Share-Based Compensation HTML 62K
39: R23 Commitments and Contingencies HTML 48K
40: R24 Pension and Other Postretirement Benefits HTML 283K
41: R25 Income Taxes HTML 229K
42: R26 Segment Information HTML 165K
43: R27 Redeemable Noncontrolling Interests HTML 62K
44: R28 Acquisitions and Dispositions HTML 67K
45: R29 Background, Organization, and Summary of HTML 139K
Significant Accounting Policies (Policies)
46: R30 Background, Organization, and Summary of HTML 145K
Significant Accounting Policies (Tables)
47: R31 Regulated Operations Plant and Leases (Tables) HTML 144K
48: R32 Revenue (Tables) HTML 108K
49: R33 Receivables and Related Allowances (Tables) HTML 58K
50: R34 Regulatory Assets and Liabilities (Tables) HTML 178K
51: R35 Other Comprehensive Income and Accumulated Other HTML 267K
Comprehensive Income ("Aoci") (Tables)
52: R36 Common Stock (Tables) HTML 42K
53: R37 Debt (Tables) HTML 150K
54: R38 Share-Based Compensation (Tables) HTML 57K
55: R39 Pension and Other Postretirement Benefits (Tables) HTML 283K
56: R40 Income Taxes (Tables) HTML 231K
57: R41 Segment Information (Tables) HTML 163K
58: R42 Redeemable Noncontrolling Interests (Tables) HTML 55K
59: R43 Acquisitions and Dispositions (Tables) HTML 65K
60: R44 Background, Organization, and Summary of HTML 130K
Significant Accounting Policies - Narrative
(Details)
61: R45 Background, Organization, and Summary of HTML 50K
Significant Accounting Policies - Schedule of
Other Property and Investments (Details)
62: R46 Background, Organization, and Summary of HTML 54K
Significant Accounting Policies - Summary of
Intangible Assets (Details)
63: R47 Background, Organization, and Summary of HTML 54K
Significant Accounting Policies - Schedule of
Estimated Future Amortization of Intangible Assets
(Details)
64: R48 Background, Organization, and Summary of HTML 67K
Significant Accounting Policies - Schedule of
Goodwill (Details)
65: R49 Background, Organization, and Summary of HTML 47K
Significant Accounting Policies - Schedule of
Capitalized and Debt Portion of AFUDC (Details)
66: R50 Background, Organization, and Summary of HTML 64K
Significant Accounting Policies - Other Income
(Deductions) (Details)
67: R51 Background, Organization, and Summary of HTML 54K
Significant Accounting Policies - Schedule of
Earnings Per Share, Basic and Diluted (Details)
68: R52 Regulated Operations Plant and Leases - Schedule HTML 67K
of Regulated Operations Plant (Details)
69: R53 Regulated Operations Plant and Leases - Narrative HTML 57K
(Details)
70: R54 Regulated Operations Plant and Leases - Schedule HTML 42K
of Depreciation and Amortization Expense (Details)
71: R55 Regulated Operations Plant and Leases - Components HTML 52K
of Lease Expense (Details)
72: R56 Regulated Operations Plant and Leases - HTML 52K
Supplemental Cash Flow Information Related to
Leases (Details)
73: R57 Regulated Operations Plant and Leases - HTML 64K
Supplemental Information Related to Leases
Included in Balance Sheet (Details)
74: R58 Regulated Operations Plant and Leases - Schedule HTML 78K
of Maturities of Lease Liabilities (Details)
75: R59 Revenue - Narrative (Details) HTML 58K
76: R60 Revenue - Schedule of Regulated Operations HTML 61K
Revenues: Natural Gas Distribution Segment
(Details)
77: R61 Revenue - Schedule of Regulated Operations HTML 62K
Revenues: Utility Infrastructure Services Segment
(Details)
78: R62 Revenue - Summary of Information about Receivables HTML 44K
(Details)
79: R63 Revenue - Schedule of Utility Infrastructure HTML 52K
Services Contracts Receivable (Details)
80: R64 Revenue - Schedule of Regulated Operations HTML 55K
Revenues: Pipeline and Storage Segment (Details)
81: R65 Receivables and Related Allowances - Narrative HTML 52K
(Details)
82: R66 Receivables and Related Allowances - Schedule of HTML 38K
Accounts Receivable (Details)
83: R67 Receivables and Related Allowances - Schedule of HTML 43K
Percent of Customers by State (Details)
84: R68 Receivables and Related Allowances - Schedule of HTML 45K
Allowance for Uncollectibles (Details)
85: R69 Regulatory Assets and Liabilities - Schedule of HTML 112K
Regulatory Assets and Liabilities (Details)
86: R70 Regulatory Assets and Liabilities - Schedule of HTML 69K
Components of Other Regulatory Assets (Details)
87: R71 Regulatory Assets and Liabilities - Schedule of HTML 54K
Components of Other Regulatory Liabilities
(Details)
88: R72 Other Comprehensive Income and Accumulated Other HTML 119K
Comprehensive Income ("AOCI") - Related Tax
Effects Allocated to OCI (Detail)
89: R73 Other Comprehensive Income and Accumulated Other HTML 161K
Comprehensive Income ("AOCI") - AOCI Rollforward
(Details)
90: R74 Other Comprehensive Income and Accumulated Other HTML 47K
Comprehensive Income ("AOCI") - Amount Recognized
Before Income Tax Associated with Defined Benefit
Plans in Accumulated Other Comprehensive Income
(Detail)
91: R75 Common Stock - Narrative (Details) HTML 67K
92: R76 Common Stock - Activity of Equity Shelf Program HTML 50K
(Details)
93: R77 Debt - Schedule of Carrying Amounts and Estimated HTML 184K
Fair Values of Long-Term Debt (Details)
94: R78 Debt - Narrative (Details) HTML 283K
95: R79 Debt - Summary of Effective Interest Rates on HTML 48K
Variable-Rate IDRBs (Details)
96: R80 Debt - Estimated Maturities of Long-Term Debt HTML 76K
(Details)
97: R81 Share-Based Compensation - Schedule of Share-Based HTML 41K
Plan Compensation Expense, Including Cash Award
(Details)
98: R82 Share-Based Compensation - Narrative (Details) HTML 63K
99: R83 Share-Based Compensation - Schedule of Nonvested HTML 69K
Performance and Restricted Stock Unit Plans
(Details)
100: R84 Commitments and Contingencies (Details) HTML 53K
101: R85 Pension and Other Postretirement Benefits - HTML 98K
Narrative (Details)
102: R86 Pension and Other Postretirement Benefits - HTML 45K
Schedule of Assumptions Used (Details)
103: R87 Pension and Other Postretirement Benefits - HTML 94K
Schedule of Amounts Recognized in Balance Sheet
and Income Statement (Details)
104: R88 Pension and Other Postretirement Benefits - HTML 43K
Schedule of Accumulated Benefit Obligation
(Details)
105: R89 Pension and Other Postretirement Benefits - HTML 58K
Schedule of Expected Benefit Payments (Details)
106: R90 Pension and Other Postretirement Benefits - HTML 79K
Schedule of Net Periodic Benefit Cost and
Weighted-Average Assumptions (Details)
107: R91 Pension and Other Postretirement Benefits - HTML 76K
Schedule of Other Changes in Plan Assets and
Benefit Obligations Recognized in Net Periodic
Benefit Cost and Other Comprehensive Income
(Details)
108: R92 Pension and Other Postretirement Benefits - HTML 112K
Schedule of Fair Value of Plan Assets (Details)
109: R93 Income Taxes - Summary of Income Before Taxes and HTML 47K
Noncontrolling Interest for Domestic and Foreign
Operations (Details)
110: R94 Income Taxes - Summary of Income Tax Expense HTML 70K
(Benefit) (Details)
111: R95 Income Taxes - Significant Components of Deferred HTML 79K
Income Tax Expense (Benefit) (Details)
112: R96 Income Taxes - Reconciliation of U.S Federal HTML 59K
Statutory Rate to Consolidated Effective Tax Rate
(Details)
113: R97 Income Taxes - Deferred Tax Assets and Liabilities HTML 85K
(Details)
114: R98 Income Taxes - Narrative (Details) HTML 60K
115: R99 Income Taxes - Reconciliation of Unrecognized Tax HTML 58K
Benefits (Details)
116: R100 Income Taxes - Summary of Income Before Taxes for HTML 41K
Continuing and Discontinued Operations (Details)
117: R101 Segment Information - Narrative (Details) HTML 46K
118: R102 Segment Information - Accounts Receivable for HTML 43K
Services (Details)
119: R103 Segment Information - Schedule of Revenues by HTML 43K
Geographic Area (Details)
120: R104 Segment Information - Schedule of Segment HTML 109K
Reporting Information (Details)
121: R105 Redeemable Noncontrolling Interests - Narrative HTML 64K
(Details)
122: R106 Redeemable Noncontrolling Interests - Summary of HTML 59K
Redeemable Noncontrolling Interest (Details)
123: R107 Acquisitions and Dispositions - Acquisitions - HTML 41K
Narrative (Details)
124: R108 Acquisitions and Dispositions - Business HTML 52K
Acquisition, Pro Forma Information (Details)
125: R109 Acquisitions and Dispositions - Dispositions - HTML 58K
Narrative (Details)
126: R110 Acquisitions and Dispositions - Schedule of Assets HTML 99K
Held for Sale (Details)
129: XML IDEA XML File -- Filing Summary XML 247K
127: XML XBRL Instance -- swx-20221231_htm XML 6.66M
128: EXCEL IDEA Workbook of Financial Reports XLSX 342K
13: EX-101.CAL XBRL Calculations -- swx-20221231_cal XML 408K
14: EX-101.DEF XBRL Definitions -- swx-20221231_def XML 1.81M
15: EX-101.LAB XBRL Labels -- swx-20221231_lab XML 3.20M
16: EX-101.PRE XBRL Presentations -- swx-20221231_pre XML 2.24M
12: EX-101.SCH XBRL Schema -- swx-20221231 XSD 375K
130: JSON XBRL Instance as JSON Data -- MetaLinks 745± 1.22M
131: ZIP XBRL Zipped Folder -- 0001692115-23-000056-xbrl Zip 1.34M
In connection with the periodic report of Southwest Gas Corporation on Form 10-K for the period ended December 31, 2022 as filed with the Securities and Exchange Commission (the “Report”), I, Karen S. Haller, the Chief Executive Officer of Southwest Gas Corporation, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350
of the United States Code, that to the best of my knowledge:
(1)the Report fully complies with the requirements of section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and
(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Southwest Gas Corporation at the dates and for the periods indicated.
This Certification has not been, and shall not be deemed, “filed” with the Securities and Exchange Commission.
Karen
S. Haller Chief Executive Officer Southwest Gas Corporation
SOUTHWEST GAS CORPORATION
CERTIFICATION
In connection with the periodic report of Southwest Gas Corporation on Form 10-K for the period ended December 31, 2022 as filed with the Securities and Exchange Commission (the “Report”), I, Robert J. Stefani, Senior Vice President/Chief Financial Officer of Southwest Gas Corporation, hereby certify as of the date hereof, solely for purposes of Title 18, Chapter 63, Section 1350 of the United States Code, that to the best of my knowledge:
(1)the Report fully complies with the requirements
of section 13(a) or 15(d), as applicable, of the Securities Exchange Act of 1934; and
(2)the information contained in the Report fairly presents, in all material respects, the financial condition and results of operations of Southwest Gas Corporation at the dates and for the periods indicated.
This Certification has not been, and shall not be deemed, “filed” with the Securities and Exchange Commission.
