CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - Southwest - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
CASH FLOW FROM OPERATING ACTIVITIES:
Net income (loss)	$ 79,851	$ 136,025	$ 151,028	$ 241,061
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	347,589	267,670	450,960	354,688
Deferred income taxes	22,955	45,374	38,793	58,339
Changes in current assets and liabilities:
Accounts receivable, net of allowance	(78,719)	(62,081)	(68,192)	(68,714)
Accrued utility revenue	43,600	42,700	(1,600)	(3,200)
Deferred purchased gas costs	(92,200)	(293,410)	(142,518)	(317,070)
Accounts payable	(29,353)	(51,086)	72,159	251
Accrued taxes	18,352	5,954	5,673	3,134
Other current assets and liabilities	(1,039)	23,289	(113,537)	9,531
Gain on sale of property	(5,215)	(5,365)	(6,756)	(6,632)
Changes in undistributed stock compensation	7,855	7,676	9,473	9,001
Equity AFUDC	(912)	0	(912)	(1,311)
Changes in deferred charges and other assets	16,417	(7,956)	10,832	(21,373)
Changes in other liabilities and deferred credits	(25,826)	(57,269)	(42,186)	(67,922)
Net cash provided by operating activities	303,355	51,521	363,217	189,783
CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additions	(612,516)	(506,737)	(821,405)	(699,368)
Changes in customer advances	23,222	7,940	31,256	14,282
Other	4,005	14,755	7,506	17,238
Net cash used in investing activities	(604,098)	(1,314,437)	(2,325,317)	(1,497,993)
CASH FLOW FROM FINANCING ACTIVITIES:
Dividends paid	(118,980)	(102,292)	(154,910)	(134,479)
Issuance of long-term debt, net	770,240	1,654,960	775,976	1,666,718
Retirement of long-term debt	(422,356)	(406,815)	(468,205)	(473,926)
Change in credit facility and commercial paper	8,000	(150,000)	138,000	(58,000)
Withholding remittance - share-based compensation	(2,105)	(1,254)	(2,115)	(1,254)
Other	(19,929)	(4,355)	(16,303)	(6,161)
Net cash provided by financing activities	254,019	1,366,056	1,951,421	1,470,320
Change in cash and cash equivalents	(47,425)	103,338	(11,418)	162,745
Cash and cash equivalents at beginning of period	222,697	83,352	186,690	23,945
Cash and cash equivalents at end of period	175,272	186,690	175,272	186,690
SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalized	146,792	57,128	194,016	98,567
Income taxes paid (received), net	10,317	7,665	6,860	12,720
Southwest Gas Corporation
CASH FLOW FROM OPERATING ACTIVITIES:
Net income (loss)	87,330	102,584	171,881	182,134
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	192,434	187,688	258,144	249,118
Deferred income taxes	26,579	35,800	44,016	55,164
Changes in current assets and liabilities:
Accounts receivable, net of allowance	66,048	43,430	(188)	(22,766)
Accrued utility revenue	43,600	42,700	(1,600)	(3,200)
Deferred purchased gas costs	(90,206)	(293,410)	(140,524)	(317,070)
Accounts payable	(71,899)	(42,536)	28,401	17,396
Accrued taxes	18,725	5,396	21,082	(12,045)
Other current assets and liabilities	(5,908)	18,608	(94,787)	(7,739)
Gain on sale of property	(1,503)	0	(1,503)	0
Changes in undistributed stock compensation	4,993	5,437	5,948	6,239
Equity AFUDC	(248)	0	(248)	(1,311)
Changes in deferred charges and other assets	1,112	(18,726)	(8,905)	(35,329)
Changes in other liabilities and deferred credits	(26,467)	(55,905)	(42,948)	(68,509)
Net cash provided by operating activities	244,590	31,066	238,769	42,082
CASH FLOW FROM INVESTING ACTIVITIES:
Construction expenditures and property additions	(485,825)	(415,398)	(672,410)	(582,393)
Changes in customer advances	23,222	7,940	31,255	14,282
Other	(1,005)	65	(1,102)	653
Net cash used in investing activities	(463,608)	(407,393)	(642,257)	(567,458)
CASH FLOW FROM FINANCING ACTIVITIES:
Contributions from parent	0	202,583	0	248,544
Dividends paid	(92,200)	(82,000)	(121,600)	(109,000)
Issuance of long-term debt, net	593,862	297,318	593,862	297,318
Retirement of long-term debt	(275,000)	0	(275,000)	0
Change in credit facility and commercial paper	8,000	(150,000)	138,000	(58,000)
Change in short-term debt	(25,000)	193,000	(25,000)	250,000
Withholding remittance - share-based compensation	(2,011)	(1,254)	(2,020)	(1,254)
Other	(2,173)	(1,632)	(2,361)	(1,708)
Net cash provided by financing activities	205,478	458,015	305,881	625,900
Change in cash and cash equivalents	(13,540)	81,688	(97,607)	100,524
Cash and cash equivalents at beginning of period	38,691	41,070	122,758	22,234
Cash and cash equivalents at end of period	25,151	122,758	25,151	122,758
SUPPLEMENTAL INFORMATION:
Interest paid, net of amounts capitalized	76,141	53,220	113,161	92,778
Income taxes paid (received), net	$ 5	$ 0	$ (13,524)	$ 3,359