Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 7,746	$ 6,515
Balance at end of period	6,722	6,696
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(1,034)	(1,558)
Increase / (Decrease)	(20)	263
Reclassifications	0	0
Balance at end of period	(1,054)	(1,295)
Translation adjustments on net investment hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	126	295
Increase / (Decrease)	37	(41)
Reclassifications	0	0
Balance at end of period	163	254
Defined benefit pension and other postretirement plans
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(12)	(6)
Increase / (Decrease)	0	0
Reclassifications	0	0
Balance at end of period	(12)	(6)
Investment securities available-for-sale
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	0
Increase / (Decrease)	(1)
Reclassifications	0
Balance at end of period	(1)
Accumulated other comprehensive income (loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(981)	(1,433)
Increase / (Decrease)	129	179
Reclassifications	(76)	99
Balance at end of period	(928)	(1,155)
Foreign exchange contracts \| Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	46	(51)
Increase / (Decrease)	113	(43)
Reclassifications	(78)	97
Balance at end of period	81	3
Interest rate contracts \| Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(107)	(113)
Increase / (Decrease)	0	0
Reclassifications	2	2
Balance at end of period	$ (105)	$ (111)