Property, Plant and Equipment - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Property, Plant and Equipment [Line Items]
Property, Plant, And Equipment And Finance Lease Right-Of-Use Asset, After Accumulated Depreciation And Amortization	$ 3,435
Property, plant and equipment, net of accumulated depreciation, depletion, and amortization		$ 3,774
Projected inflation rate	2.50%
Capitalized interest	$ 5	$ 5
Risk-Free Interest Rate | Minimum
Property, Plant and Equipment [Line Items]
Credit-adjusted risk-free rate	0.07
Risk-Free Interest Rate | Maximum
Property, Plant and Equipment [Line Items]
Credit-adjusted risk-free rate	0.09