Shareholders' Equity - AOCI (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 22,178	$ 24,145
Total other comprehensive (loss), net of tax	(120)	(86)
Balance	22,127	23,232
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,988)	(2,487)
Other comprehensive income (loss) before reclassifications	14	(136)
Gain (loss) on net investment hedges	(158)	84
Amounts reclassified from AOCI	(19)	(21)
Tax effect	43	(10)
Total other comprehensive (loss), net of tax	(120)	(83)
Balance	(3,108)	(2,570)
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,999)	(2,539)
Other comprehensive income (loss) before reclassifications	25	(77)
Gain (loss) on net investment hedges	(158)	84
Amounts reclassified from AOCI	0	0
Tax effect	38	(20)
Total other comprehensive (loss), net of tax	(95)	(13)
Balance	(3,094)	(2,552)
Deferred Gain (Loss) on Hedging Activities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	126	158
Other comprehensive income (loss) before reclassifications	12	(50)
Gain (loss) on net investment hedges	0	0
Amounts reclassified from AOCI	(17)	(19)
Tax effect	(1)	10
Total other comprehensive (loss), net of tax	(6)	(59)
Balance	120	99
Pension and Other Postretirement Benefit Liabilities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(100)	(108)
Other comprehensive income (loss) before reclassifications	(20)	(2)
Gain (loss) on net investment hedges	0	0
Amounts reclassified from AOCI	(2)	(2)
Tax effect	6	1
Total other comprehensive (loss), net of tax	(16)	(3)
Balance	(116)	(111)
Unrealized Gain (Loss) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(15)	2
Other comprehensive income (loss) before reclassifications	(3)	(7)
Gain (loss) on net investment hedges	0	0
Amounts reclassified from AOCI	0	0
Tax effect	0	(1)
Total other comprehensive (loss), net of tax	(3)	(8)
Balance	$ (18)	$ (6)