Basis of Presentation - Additional Information (Detail) - USD ($)	Jun. 30, 2017	Jan. 01, 2017	Dec. 31, 2016
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings	$ 9,153,000,000		$ 10,147,000,000
Deferred income taxes in non-current assets	25,000,000		59,000,000
Capital in excess of par value	$ 5,826,000,000		5,773,000,000
Cumulative effect adjustment to Retained earnings			$ (37,000,000)
Accounting Standards Update (ASU) 2016-16 | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings		$ (37,000,000)
Deferred income taxes in non-current assets		(37,000,000)
Accounting Standards Update (ASU) 2016-09 | Restatement Adjustment
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Retained earnings		(2,000,000)
Capital in excess of par value		2,000,000
Cumulative effect adjustment to Retained earnings		$ 0