Segment Information - Schedule of Segment Reporting Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Total Regulated operations revenues	$ 1,125,588	$ 888,696	$ 3,539,117	$ 2,596,024	$ 4,623,544	$ 3,510,104
Segment net income (loss)	(12,309)	(11,576)	77,294	130,836	147,237	234,380
Revenues from external customers
Segment Reporting Information [Line Items]
Total Regulated operations revenues	1,089,032	861,854	3,440,257	2,521,295	4,497,067	3,402,733
Intersegment revenues
Segment Reporting Information [Line Items]
Total Regulated operations revenues	36,556	26,842	98,860	74,729	126,477	107,371
Segment net income (loss)	(16,775)	(2,572)	(49,962)	(4,545)	(72,193)	(4,477)
Natural Gas Distribution
Segment Reporting Information [Line Items]
Total Regulated operations revenues	303,944	255,848	1,358,425	1,070,576	1,809,639	1,445,066
Segment net income (loss)	(22,199)	(27,544)	87,330	102,584	171,881	182,134
Natural Gas Distribution | Revenues from external customers
Segment Reporting Information [Line Items]
Total Regulated operations revenues	303,944	255,848	1,358,425	1,070,576	1,809,639	1,445,066
Natural Gas Distribution | Intersegment revenues
Segment Reporting Information [Line Items]
Total Regulated operations revenues	0	0	0	0	0	0
Utility Infrastructure Services
Segment Reporting Information [Line Items]
Total Regulated operations revenues	758,466	632,848	1,988,433	1,525,448	2,621,646	2,065,038
Segment net income (loss)	14,345	18,540	(4,400)	32,797	3,223	56,723
Utility Infrastructure Services | Revenues from external customers
Segment Reporting Information [Line Items]
Total Regulated operations revenues	721,910	606,006	1,889,573	1,450,719	2,495,169	1,957,667
Utility Infrastructure Services | Intersegment revenues
Segment Reporting Information [Line Items]
Total Regulated operations revenues	36,556	26,842	98,860	74,729	126,477	107,371
Pipeline and Storage
Segment Reporting Information [Line Items]
Total Regulated operations revenues	63,178	0	192,259	0	192,259	0
Segment net income (loss)	12,320	0	44,326	0	44,326	0
Pipeline and Storage | Revenues from external customers
Segment Reporting Information [Line Items]
Total Regulated operations revenues	63,178	0	192,259	0	192,259	0
Pipeline and Storage | Intersegment revenues
Segment Reporting Information [Line Items]
Total Regulated operations revenues	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0