Derivatives - Notional and Maturity Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Receive-Variable Pay-Fixed Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	$ 450	$ 450
Interest Rate Contract | Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	2,500	0
Foreign Exchange Forward | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	522	476
Foreign Exchange Forward | Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	434	333
Commodity Contract | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	518	450
Receive-Fixed Pay-Variable Interest Rate Swaps | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	250	0
Swaption | Not Designated as Hedging Instrument
Derivative [Line Items]
Notional amounts of derivative instruments	$ 250	$ 0