Accumulated Other Comprehensive Loss (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance	$ 1,744	$ 1,528	$ 827
Other comprehensive income (loss)	(405)	293	99
Balance	1,205	1,744	1,528
Net Effect of Exchange Rate Fluctuations
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance	(949)	(1,280)	(1,290)
Change before reclassifications	(486)	331	10
Other comprehensive income (loss)	(486)	331	10
Balance	(1,435)	(949)	(1,280)
Change in Certain Derivative Instruments
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance	(43)	4	(21)
Change before reclassifications	28	(68)	60
Amounts reclassified from accumulated other comprehensive income (loss)	(4)	20	(27)
Translation effect	2	(4)	(5)
Tax effect	3	5	(3)
Other comprehensive income (loss)	29	(47)	25
Balance	(14)	(43)	4
Employee Benefit Plans
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance	(588)	(585)	(661)
Change before reclassifications	40	(26)	(24)
Amounts reclassified from accumulated other comprehensive income (loss)	26	33	69
Translation effect	4	(14)	21
Tax effect	(8)	4	10
Other comprehensive income (loss)	62	(3)	76
Balance	(526)	(588)	(585)
Accumulated Other Comprehensive Loss.
Increase (Decrease) Accumulated Other Comprehensive Loss, Net of Tax
Balance	(1,580)	(1,861)	(1,972)
Change before reclassifications	(418)	237	46
Amounts reclassified from accumulated other comprehensive income (loss)	22	53	42
Translation effect	6	(18)	16
Tax effect	(5)	9	7
Other comprehensive income (loss)	(395)	281	111
Balance	$ (1,975)	$ (1,580)	$ (1,861)