Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Statement of Comprehensive Income [Abstract]
Net income	$ 2,369	$ 3,078	$ 4,696
Other comprehensive income (loss) items:
Gains (losses) on derivatives	(15)	(5)	44
Pension and postretirement gains (losses)	38	(89)	34
Other	0	(2)	2
Other comprehensive income (loss), net of tax	23	(96)	80
Comprehensive income	2,392	2,982	4,776
Less: Comprehensive income attributable to noncontrolling interest	(43)	(22)	0
Comprehensive income attributable to preferred and common stockholders	$ 2,349	$ 2,960	$ 4,776