Shareholders' Equity - AOCI (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 22,127	$ 23,232	$ 22,178	$ 24,145
Total other comprehensive income (loss), net of tax	316	(311)	196	(397)
Balance	22,438	22,159	22,438	22,159
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(3,108)	(2,570)	(2,988)	(2,487)
Other comprehensive income (loss) before reclassifications	540	(355)	554	(491)
Gain (loss) on net investment hedges	(317)	25	(475)	109
Amounts reclassified from AOCI	7	19	(12)	(2)
Tax effect	86	1	129	(9)
Total other comprehensive income (loss), net of tax	316	(310)	196	(393)
Balance	(2,792)	(2,880)	(2,792)	(2,880)
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(3,094)	(2,552)	(2,999)	(2,539)
Other comprehensive income (loss) before reclassifications	599	(285)	624	(362)
Gain (loss) on net investment hedges	(317)	25	(475)	109
Amounts reclassified from AOCI	0	0	0	0
Tax effect	75	(6)	113	(26)
Total other comprehensive income (loss), net of tax	357	(266)	262	(279)
Balance	(2,737)	(2,818)	(2,737)	(2,818)
Deferred Gain (Loss) on Cash Flow Hedging Activities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	120	99	126	158
Other comprehensive income (loss) before reclassifications	(70)	(71)	(58)	(121)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	11	23	(6)	4
Tax effect	13	6	12	16
Total other comprehensive income (loss), net of tax	(46)	(42)	(52)	(101)
Balance	74	57	74	57
Pension and Other Postretirement Benefit Liabilities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(116)	(111)	(100)	(108)
Other comprehensive income (loss) before reclassifications	12	1	(8)	(1)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	(4)	(4)	(6)	(6)
Tax effect	(2)	1	4	2
Total other comprehensive income (loss), net of tax	6	(2)	(10)	(5)
Balance	(110)	(113)	(110)	(113)
Unrealized Gain (Loss) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(18)	(6)	(15)	2
Other comprehensive income (loss) before reclassifications	(1)	0	(4)	(7)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	0	0	0	0
Tax effect	0	0	0	(1)
Total other comprehensive income (loss), net of tax	(1)	0	(4)	(8)
Balance	$ (19)	$ (6)	$ (19)	$ (6)