Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 15,891	$ 16,516	$ 15,378
Total other comprehensive income (loss), net of tax	637	(904)	(665)
Ending balance	19,503	15,891	16,516
Foreign currency translation
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,328)	(1,508)	(910)
Gains (losses)	32	(794)	(559)
Less: Tax provision /(benefit)	(21)	26	41
Net gains (losses) on foreign currency translation	53	(820)	(600)
(Gains) losses reclassified to earnings	493	0	2
Less: Tax provision /(benefit)	0	0	0
Net (gains) losses reclassified to earnings	493	0	2
Total other comprehensive income (loss), net of tax	546	(820)	(598)
Ending balance	(1,782)	(2,328)	(1,508)
Pension and other postretirement benefits
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(39)	(62)	(32)
Gains (losses)	1	33	0
Less: Tax provision /(benefit)	0	5	0
Net gains (losses) on foreign currency translation	1	28	0
(Gains) losses reclassified to earnings	(12)	(6)	(40)
Less: Tax provision /(benefit)	(1)	(1)	(10)
Net (gains) losses reclassified to earnings	(11)	(5)	(30)
Total other comprehensive income (loss), net of tax	(10)	23	(30)
Ending balance	(49)	(39)	(62)
Derivative financial instruments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	28	(3)	0
Gains (losses)	48	375	195
Less: Tax provision /(benefit)	11	86	21
Net gains (losses) on foreign currency translation	37	289	174
(Gains) losses reclassified to earnings	3	(340)	(196)
Less: Tax provision /(benefit)	1	(82)	(19)
Net (gains) losses reclassified to earnings	2	(258)	(177)
Total other comprehensive income (loss), net of tax	39	31	(3)
Ending balance	67	28	(3)
Available-for-sale securities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(118)	20	54
Gains (losses)	72	(179)	(39)
Less: Tax provision /(benefit)	11	(37)	(8)
Net gains (losses) on foreign currency translation	61	(142)	(31)
(Gains) losses reclassified to earnings	1	5	(4)
Less: Tax provision /(benefit)	0	1	(1)
Net (gains) losses reclassified to earnings	1	4	(3)
Total other comprehensive income (loss), net of tax	62	(138)	(34)
Ending balance	(56)	(118)	20
Accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(2,457)	(1,553)	(888)
Ending balance	$ (1,820)	$ (2,457)	$ (1,553)