Derivatives and Hedging Instruments - Narrative (Details) - USD ($)	Mar. 31, 2026	Dec. 31, 2025
Derivative [Line Items]
Derivative, notional amount	$ 11,334,000,000	$ 10,283,000,000
Fair value of embedded derivative	38,000,000	230,000,000
Net investment hedges | Net investment hedges:
Derivative [Line Items]
Derivative, notional amount	0	923,000,000
Net investment hedges | Net investment hedges: | Cross-currency interest rate swaps
Derivative [Line Items]
Derivative, notional amount	350,000,000	373,000,000
Cash flow hedges | Foreign currency forward contracts
Derivative [Line Items]
Net (loss) gain to be reclassified within the next 12 months	(20,000,000)	(51,000,000)
Cash flow hedges | Cross-currency interest rate swaps
Derivative [Line Items]
Net (loss) gain to be reclassified within the next 12 months	31,000,000	13,000,000
Cash flow hedges | Interest rate locks
Derivative [Line Items]
Derivative, notional amount	0	0
Net (loss) gain to be reclassified within the next 12 months	3,000,000	4,000,000
Cash flow hedges | Net investment hedges: | Cross-currency interest rate swaps
Derivative [Line Items]
Derivative, notional amount	$ 3,603,000,000	$ 2,972,000,000