Fair Value Measurements - Fair Values of Derivative Instruments in Consolidated Balance Sheets (Detail) - Interest Rate Swap Arrangements - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Other Non- Current Assets
Derivatives Fair Value [Line Items]
Assets	$ 7	$ 3
Other Non-Current Liabilities
Derivatives Fair Value [Line Items]
Liabilities	2	4
Account Payable And Other Current Liabilities
Derivatives Fair Value [Line Items]
Liabilities	$ 1	$ 1

Aggregate fair value of all derivative assets designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 10
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611

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- Definition

Aggregate fair value of all derivative liabilities designated as hedging instruments. Includes instruments designated as cash flow hedges, fair value hedges, and hedges of net investments in foreign operations.

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