CONDENSED CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Operating revenues:
Regulated operations revenues	$ 1,052,933	$ 950,011
Utility infrastructure services revenues	528,023	653,293
Total operating revenues	1,580,956	1,603,304
Operating expenses:
Net cost of gas sold	629,997	507,537
Operations and maintenance	135,146	148,908
Depreciation and amortization	119,142	112,520
Taxes other than income taxes	22,903	24,230
Utility infrastructure services expenses	515,643	603,680
Goodwill impairment and loss on sale	0	71,230
Total operating expenses	1,422,831	1,468,105
Operating income	158,125	135,199
Other income and (expenses):
Net interest deductions	(71,605)	(77,334)
Other income	18,121	18,460
Total other (expenses)	(53,484)	(58,874)
Income before income taxes	104,641	76,325
Income tax expense	17,079	28,675
Net income	87,562	47,650
Net income (loss) attributable to noncontrolling interests	(175)	1,739
Net income attributable to Southwest Gas Holdings, Inc.	$ 87,737	$ 45,911
Earnings per share:
Basic (in USD per share)	$ 1.22	$ 0.67
Diluted (in USD per share)	$ 1.22	$ 0.67
Weighted average shares:
Basic (in shares)	71,728	68,265
Diluted (in shares)	71,882	68,419