Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Net income (loss)	$ 2,662	$ 1,595	$ 1,468
Other comprehensive income (loss), net of income taxes:
Defined benefit and other postretirement plans adjustments	(106)	(54)	179
Other	5	7	0
Other comprehensive income (loss), net of income taxes	(101)	(47)	179
Comprehensive income (loss)	2,561	1,548	1,647
Comprehensive income attributable to noncontrolling interest	(24)	(23)	(11)
Comprehensive income (loss) attributable to company shareholders	$ 2,537	$ 1,525	$ 1,636