Shareholders' Equity - AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 22,438	$ 22,159	$ 22,178	$ 24,145
Total other comprehensive income (loss), net of tax	182	41	378	(356)
Balance	22,502	21,984	22,502	21,984
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,792)	(2,880)	(2,988)	(2,487)
Other comprehensive income (loss) before reclassifications	167	92	721	(399)
Gain (loss) on net investment hedges	15	(142)	(460)	(33)
Amounts reclassified from AOCI	19	46	7	43
Tax effect	(19)	44	110	36
Total other comprehensive income (loss), net of tax	182	40	378	(353)
Balance	(2,610)	(2,840)	(2,610)	(2,840)
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,737)	(2,818)	(2,999)	(2,539)
Other comprehensive income (loss) before reclassifications	120	143	744	(219)
Gain (loss) on net investment hedges	15	(142)	(460)	(33)
Amounts reclassified from AOCI	0	0	0	0
Tax effect	(4)	34	109	8
Total other comprehensive income (loss), net of tax	131	35	393	(244)
Balance	(2,606)	(2,783)	(2,606)	(2,783)
Deferred Gain (Loss) on Cash Flow Hedging Activities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	74	57	126	158
Other comprehensive income (loss) before reclassifications	45	(46)	(13)	(167)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	22	49	16	52
Tax effect	(14)	8	(2)	25
Total other comprehensive income (loss), net of tax	53	11	1	(90)
Balance	127	68	127	68
Pension and Other Postretirement Benefit Liabilities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(110)	(113)	(100)	(108)
Other comprehensive income (loss) before reclassifications	2	(5)	(6)	(6)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	(3)	(3)	(9)	(9)
Tax effect	(1)	2	3	4
Total other comprehensive income (loss), net of tax	(2)	(6)	(12)	(11)
Balance	(112)	(119)	(112)	(119)
Unrealized Gain (Loss) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(19)	(6)	(15)	2
Other comprehensive income (loss) before reclassifications	0	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	0	0	(4)	(8)
Balance	$ (19)	$ (6)	$ (19)	$ (6)