Shareholders' Equity - AOCI (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	$ 22,159	$ 24,975	$ 24,145	$ 24,317
Other comprehensive income (loss)	41	(179)	(356)	(107)
Balance	21,984	25,265	21,984	25,265
Accumulated Other Comprehensive Income (Loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,880)	(2,433)	(2,487)	(2,509)
Other comprehensive income (loss) before reclassifications	92	(389)	(399)	(342)
Gain (loss) on net investment hedges	(142)	149	(33)	19
Amounts reclassified from AOCI	46	129	43	239
Tax effect	44	(67)	36	(18)
Other comprehensive income (loss)	40	(178)	(353)	(102)
Balance	(2,840)	(2,611)	(2,840)	(2,611)
Foreign Currency Translation Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(2,818)	(2,402)	(2,539)	(2,622)
Other comprehensive income (loss) before reclassifications	143	(393)	(219)	(71)
Gain (loss) on net investment hedges	(142)	149	(33)	19
Amounts reclassified from AOCI	0	0	0	0
Tax effect	34	(36)	8	(8)
Other comprehensive income (loss)	35	(280)	(244)	(60)
Balance	(2,783)	(2,682)	(2,783)	(2,682)
Deferred Gain (Loss) on Hedging Activities
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	57	39	158	148
Other comprehensive income (loss) before reclassifications	(46)	(4)	(167)	(290)
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	49	132	52	277
Tax effect	8	(28)	25	4
Other comprehensive income (loss)	11	100	(90)	(9)
Balance	68	139	68	139
Pension Liability Adjustment
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(113)	(63)	(108)	(22)
Other comprehensive income (loss) before reclassifications	(5)	3	(6)	6
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	(3)	(3)	(9)	(38)
Tax effect	2	(3)	4	(12)
Other comprehensive income (loss)	(6)	(3)	(11)	(44)
Balance	(119)	(66)	(119)	(66)
Unrealized Gain (Loss) on Investments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Balance	(6)	(7)	2	(13)
Other comprehensive income (loss) before reclassifications	0	5	(7)	13
Gain (loss) on net investment hedges	0	0	0	0
Amounts reclassified from AOCI	0	0	0	0
Tax effect	0	0	(1)	(2)
Other comprehensive income (loss)	0	5	(8)	11
Balance	$ (6)	$ (2)	$ (6)	$ (2)