CONDENSED CONSOLIDATED STATEMENTS OF INCOME - Southwest - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Regulated operations 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
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 attributable to Southwest Gas Holdings, Inc.	87,737	45,911
Southwest Gas Corporation
Regulated operations revenues	1,052,933	914,879
Operating expenses:
Net cost of gas sold	629,997	501,169
Operations and maintenance	130,866	131,188
Depreciation and amortization	84,823	74,650
Taxes other than income taxes	22,903	22,740
Total operating expenses	868,589	729,747
Operating income	184,344	185,132
Other income and (expenses):
Net interest deductions	(36,444)	(38,622)
Other income	18,100	18,443
Total other (expenses)	(18,344)	(20,179)
Income before income taxes	166,000	164,953
Income tax expense	30,175	30,257
Net income attributable to Southwest Gas Holdings, Inc.	$ 135,825	$ 134,696