Derivatives and Financial Instruments - Balance Sheet Location (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Fair Value, Recurring \| Cash Flow Hedging \| Interest rate swap contracts \| Other Noncurrent Liabilities
Derivative [Line Items]
Interest rate swap contracts	$ 8	$ 1

Fair value as of the balance sheet date of interest rate derivative assets, net of interest rate derivative liabilities, which includes all such derivative instruments in hedging and nonhedging relationships that are recognized on the balance sheet.

No definition available.

Name:	us-gaap_InterestRateDerivativesAtFairValueNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant