Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net other comprehensive income (loss) recognized during the period, tax	$ 181	$ 518	$ 925
Amounts reclassified from accumulated other comprehensive loss, tax	40	18	130
Pension settlement charge, tax		314	355
Other, net, tax	$ 6	$ 2	$ 11