Consolidated Condensed Statements of Comprehensive Income - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Statement of Comprehensive Income [Abstract]
Net income		$ 1,140	$ 1,375	$ 3,198	$ 3,498
Other comprehensive income (loss) items:
Gains (losses) on derivatives		(8)	1	(6)	59
Pension and postretirement gains (losses)	[1]	(7)	46	(19)	39
Other		0	(1)	(1)	0
Other comprehensive income (loss), net of tax		(15)	46	(26)	98
Comprehensive income		1,125	1,421	3,172	3,596
Comprehensive income attributable to noncontrolling interest		(7)	0	(15)	0
Comprehensive income attributable to preferred and common stockholders		$ 1,118	$ 1,421	$ 3,157	$ 3,596

[1] Net of tax benefit of $1 million and tax expense of $12 million for the three months ended September 30, 2024 and 2023, respectively, and tax benefit of $6 million and tax expense of $10 million for the nine months ended September 30, 2024 and 2023, respectively.