Financial Instruments and Fair Value Measurements - Summary of Undesignated Foreign Currency Forwards Activity (Detail) - Undesignated Derivatives [Member]	9 Months Ended
	Sep. 30, 2018 USD ($) Derivative	Sep. 30, 2017 USD ($) Derivative
CAD
Derivative [Line Items]
Notional amounts at January 1	$ 56,000,000	$ 38,000,000
New contracts	28,000,000	19,000,000
Matured, expired or settled contracts	(21,000,000)	(17,000,000)
Notional amounts at September 30	$ 63,000,000	$ 40,000,000
Weighted average forward rate at September 30	1.28	1.30
Active contracts at September 30 | Derivative	28	18
China, Yuan Renminbi
Derivative [Line Items]
Notional amounts at January 1	$ 0
New contracts	80,000,000
Matured, expired or settled contracts	(80,000,000)
Notional amounts at September 30	$ 0
Weighted average forward rate at September 30	0
Active contracts at September 30 | Derivative	0
EUR
Derivative [Line Items]
Notional amounts at January 1	$ 233,000,000	$ 197,000,000
New contracts	95,000,000	63,000,000
Matured, expired or settled contracts	(87,000,000)	(81,000,000)
Notional amounts at September 30	$ 241,000,000	$ 179,000,000
Weighted average forward rate at September 30	1.20	1.13
Active contracts at September 30 | Derivative	34	23
GBP
Derivative [Line Items]
Notional amounts at January 1	$ 132,000,000	$ 78,000,000
New contracts	17,000,000	137,000,000
Matured, expired or settled contracts	(50,000,000)	(75,000,000)
Notional amounts at September 30	$ 99,000,000	$ 140,000,000
Weighted average forward rate at September 30	1.31	1.31
Active contracts at September 30 | Derivative	18	19
MXN
Derivative [Line Items]
Notional amounts at January 1	$ 0
New contracts	15,000,000
Matured, expired or settled contracts	(15,000,000)
Notional amounts at September 30	$ 0
Weighted average forward rate at September 30	0
Active contracts at September 30 | Derivative	0
JPY
Derivative [Line Items]
Notional amounts at January 1	$ 153,000,000	$ 144,000,000
New contracts	54,000,000	38,000,000
Matured, expired or settled contracts	(56,000,000)	(49,000,000)
Notional amounts at September 30	$ 151,000,000	$ 133,000,000
Weighted average forward rate at September 30	105.65	106.11
Active contracts at September 30 | Derivative	35	29