Derivative Instruments - Fair Value Amounts of Cash Flow Hedges (Details) - Designated as hedging instrument - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Foreign exchange forward contracts \| Prepaid and other current assets \| Cash Flow Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, fair value, net	$ 1	$ 3
Cross currency swap \| Other non-current liabilities \| Net Investment Hedging
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative, fair value, net	$ 10	$ 0

Fair value of the assets less the liabilities of a derivative or group of derivatives.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-URI http://asc.fasb.org/extlink&oid=118260190&loc=d3e13433-108611

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