Schedule I Condensed Financial Statements (Parent Company Only) - Condensed Statements of Comprehensive Income (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Condensed Financial Statements, Captions [Line Items]
Net income	$ 3,372	$ 3,144	$ 6,189
Other comprehensive income (loss), net of tax	246	(806)	217
Comprehensive income	3,618	2,338	6,406
Comprehensive income attributable to noncontrolling interests	352	426	404
Comprehensive income attributable to parent	3,266	1,912	6,002
Parent Company
Condensed Financial Statements, Captions [Line Items]
Net income	3,020	2,721	5,790
Other comprehensive income (loss), net of tax	246	(809)	212
Comprehensive income	3,266	1,912	6,002
Comprehensive income attributable to noncontrolling interests	0	0	0
Comprehensive income attributable to parent	$ 3,266	$ 1,912	$ 6,002