Employee Benefit Plans, Pre-Tax Amounts Recognized in Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Net (gain) loss reclassified into income:
Total changes in other comprehensive income (loss)	$ 207	$ 30	$ 335
Pension Plans [Member]
Net gain (loss) arising during the year:
Net actuarial gain (loss)	195	87	158
Prior service cost	0	(19)	0
Net (gain) loss reclassified into income:
Net actuarial (gain) loss	(5)	(6)	53
Prior service credit	(10)	(18)	(18)
Settlement loss	5	2	61
Effect of exchange rates	(2)	4	0
Total changes in other comprehensive income (loss)	183	50	254
Other Postretirement Benefit Plans [Member]
Net gain (loss) arising during the year:
Net actuarial gain (loss)	29	(10)	86
Prior service cost	0	0	0
Net (gain) loss reclassified into income:
Net actuarial (gain) loss	(4)	(6)	(1)
Prior service credit	0	(4)	(4)
Settlement loss	0	0	0
Effect of exchange rates	(1)	0	0
Total changes in other comprehensive income (loss)	$ 24	$ (20)	$ 81