Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	$ 6,515	$ 6,975
Increase / (Decrease)	68	(156)
Reclassifications	384	(178)
Ending balance	7,746	6,515
Foreign Currency Translation Adjustments
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,558)	(1,119)
Increase / (Decrease)	524	(439)
Reclassifications	0	0
Ending balance	(1,034)	(1,558)
Translation Adjustments on Net Investment Hedge
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	295	181
Increase / (Decrease)	(169)	114
Reclassifications	0	0
Ending balance	126	295
Cash Flow Hedges \| Foreign exchange contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(51)	(17)
Increase / (Decrease)	(281)	149
Reclassifications	378	(183)
Ending balance	46	(51)
Cash Flow Hedges \| Interest rate contracts
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(113)	(118)
Increase / (Decrease)	0	0
Reclassifications	6	5
Ending balance	(107)	(113)
Defined Benefit Pension and Other Postretirement Plans
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(6)	(25)
Increase / (Decrease)	(6)	19
Reclassifications	0	0
Ending balance	(12)	(6)
Investment Securities Available-for-Sale
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	0	(1)
Increase / (Decrease)	0	1
Reclassifications	0	0
Ending balance	0	0
Accumulated other comprehensive income (loss)
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward]
Beginning balance	(1,433)	(1,099)
Ending balance	$ (981)	$ (1,433)