Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	$ 7,746	$ 6,515
Balance at end of period	6,740	7,919
Foreign currency translation adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	(1,034)	(1,558)
Increase / (Decrease)	(32)	581
Reclassifications	0	0
Balance at end of period	(1,066)	(977)
Translation adjustments on net investment hedge
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	126	295
Increase / (Decrease)	56	(164)
Reclassifications	0	0
Balance at end of period	182	131
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)	(3)
Reclassifications	0
Balance at end of period	(3)
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	124
Reclassifications	(142)	374
Balance at end of period	(994)	(935)
Foreign exchange contracts \| Cash flow hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance at beginning of period	46	(51)
Increase / (Decrease)	108	(293)
Reclassifications	(146)	370
Balance at end of period	8	26
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	4	4
Balance at end of period	$ (103)	$ (109)