Other Comprehensive Income (Loss) - Narrative (Details) - USD ($) $ in Millions	3 Months Ended					6 Months Ended	9 Months Ended	12 Months Ended
	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2023	Sep. 30, 2023	Dec. 31, 2024		Dec. 31, 2023		Dec. 31, 2022
Equity [Abstract]
Comprehensive earnings	$ 886	$ 997	$ 846	$ 980	$ 976	$ 1,956	$ 2,802	$ 3,517	[1]	$ 3,799	[2]	$ 4,080	[1]

[1] See Note 20, Revision of Prior Period Financial Statements.

[2] See Note 20, Revision of Prior Period Financial Statements.