Financial Information by Business Segment - Schedule of Segment Operating Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Segment Reporting Information [Line Items]
Total segment operating income	$ 685,296	$ 2,314,411	$ 2,717,997
Unallocated amounts:
Corporate selling, general and administrative	336,724	236,171	252,645
Corporate other operating expenses	349,864	84,043	57,331
(Income) loss from investments	(76,039)	(7,596)	4,931
Other income	(25,983)	(1,231)	(11,280)
Loss on debt extinguishment	68,299	80	140,029
Interest expense, net	454,825	219,660	249,655
Income before income taxes	264,194	2,103,498	2,334,662
MVP Joint Venture | Transmission
Unallocated amounts:
Total investments	78,800
Operating Segments
Segment Reporting Information [Line Items]
Total segment operating income	1,075,902	2,399,042	2,751,842
Unallocated amounts:
Corporate selling, general and administrative	300,470	236,171	252,645
Corporate other operating expenses	12,696	9,177	32,605
Operating Segments | Transmission
Segment Reporting Information [Line Items]
Total segment operating income	140,799
Unallocated amounts:
Corporate selling, general and administrative	17,183
Corporate other operating expenses	0
Intersegment eliminations
Segment Reporting Information [Line Items]
Total segment operating income	457	0	0
Unallocated amounts
Segment Reporting Information [Line Items]
Total segment operating income	(390,606)	(84,631)	(33,845)
Unallocated amounts:
Other revenue	(34)	0	0
Corporate selling, general and administrative	36,254	0	0
Corporate other depreciation and amortization	16,761	9,765	9,119
Corporate other operating expenses	337,168	74,866	24,726
(Income) loss from investments	(76,039)	(7,596)	4,931
Other income	(25,983)	(1,231)	(11,280)
Loss on debt extinguishment	68,299	80	140,029
Interest expense, net	$ 454,825	$ 219,660	$ 249,655