Risk Management - Net Investment Hedges (Details) - Foreign Exchange Contract € in Millions, £ in Millions, $ in Millions	Sep. 30, 2023 USD ($)	Sep. 30, 2023 EUR (€)	Sep. 30, 2023 GBP (£)	Dec. 31, 2022 USD ($)
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	$ 1,300			$ 1,100
Designated as Hedging Instrument | Net Investment Hedging
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts		€ 100	£ 70
Not Designated As Hedging Instruments
Derivative [Line Items]
Notional amounts of outstanding foreign exchange contracts	$ 15