Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income		$ 1,170	$ 860	$ 2,058	$ 2,123
Other comprehensive income (loss) items:
Gains (losses) on derivatives	[1]	(7)	(5)	2	58
Pension and postretirement losses	[2]	(8)	(2)	(12)	(7)
Other		(1)	(1)	(1)	1
Other comprehensive income, net of tax		(16)	(8)	(11)	52
Comprehensive income		1,154	852	2,047	2,175
Comprehensive income attributable to noncontrolling interest		(8)	0	(8)	0
Comprehensive income attributable to preferred and common stockholders		$ 1,146	$ 852	$ 2,039	$ 2,175

[1] Net of tax expense of zero for the three and six months ended June 30, 2024 and 2023.

[2] Net of tax expense of $4 million and $1 million for the three months ended June 30, 2024 and 2023 and $5 million and $2 million for the six months ended June 30, 2024 and 2023.