Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	$ (1,861)
Other comprehensive income	293	$ 99	$ 295
Balance at end of the period	(1,580)	(1,861)
Net Effect of Exchange Rate Fluctuations
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(1,280)	(1,290)	(1,229)
Change before reclassifications	331	10	(61)
Other comprehensive income	331	10	(61)
Balance at end of the period	(949)	(1,280)	(1,290)
Change in Certain Derivative Instruments
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	4	(21)	(60)
Change before reclassifications	(68)	60	119
Amounts reclassified from accumulated other comprehensive income	20	(27)	(80)
Translation effect	(4)	(5)	1
Tax effect	5	(3)	(1)
Other comprehensive income	(47)	25	39
Balance at end of the period	(43)	4	(21)
Employee Benefit Plans
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(585)	(661)	(983)
Change before reclassifications	(26)	(24)	165
Amounts reclassified from accumulated other comprehensive income	33	69	148
Translation effect	(14)	21	9
Tax effect	4	10
Other comprehensive income	(3)	76	322
Balance at end of the period	(588)	(585)	(661)
Accumulated Other Comprehensive Loss.
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance at beginning of the period	(1,861)	(1,972)	(2,272)
Change before reclassifications	237	46	223
Amounts reclassified from accumulated other comprehensive income	53	42	68
Translation effect	(18)	16	10
Tax effect	9	7	(1)
Other comprehensive income	281	111	300
Balance at end of the period	$ (1,580)	$ (1,861)	$ (1,972)