Derivative Instruments - Derivatives and Hedges (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Net Investment Hedges
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI	$ 1	$ 8	$ 5
Commodity forward contracts | Cash Flow Hedges
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI	(1)	1	2
Foreign exchange risk | Cash Flow Hedges
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI	(10)		(18)
Foreign exchange risk | Cash Flow Hedges | Maximum
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI		(1)
Interest rate swaps | Cash Flow Hedges
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI		$ (1)	$ (1)
Interest rate swaps | Cash Flow Hedges | Maximum
Derivatives and Hedges
Unrecognized (loss) gain included in Accumulated OCI	$ (1)