Derivative Instruments - Additional Information (Details) $ in Millions	Jun. 30, 2026 USD ($)
Derivative [Line Items]
Foreign currency cash flow hedge gain (loss) to be reclassified during next 12 months	$ 28
Cash Flow Hedging [Member] \| Currency Swap [Member] \| SCL Swaps [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount	3,410
Cash Flow Hedging [Member] \| Forward Contracts [Member] \| SCL Forwards [Member] \| Designated as Hedging Instrument [Member]
Derivative [Line Items]
Derivative, notional amount	527
Net Investment Hedging [Member] \| Currency Swap [Member] \| Designated as Hedging Instrument [Member] \| MBS Net Investment Hedge [Member]
Derivative [Line Items]
Derivative, notional amount	1,800
Net Investment Hedging [Member] \| Forward Contracts [Member] \| Designated as Hedging Instrument [Member] \| SCL Net Investment Hedge [Member]
Derivative [Line Items]
Derivative, notional amount	129
Net Investment Hedging [Member] \| Forward Contracts [Member] \| Designated as Hedging Instrument [Member] \| June SCL Net Investment Hedge
Derivative [Line Items]
Derivative, notional amount	$ 258