Financial Instruments and Fair Value Measurements - Summary of Undesignated Foreign Currency Forwards Activity (Detail) - Forwards [Member] - Undesignated Derivatives [Member]	3 Months Ended
	Mar. 31, 2019 USD ($) Derivative	Mar. 31, 2018 USD ($) Derivative
BRL
Derivative [Line Items]
Notional amounts at January 1	$ 5,000,000
New contracts	489,000,000
Matured, expired or settled contracts	(494,000,000)
Notional amounts at March 31	$ 0
Weighted average forward rate at March 31	0
Active contracts at March 31 | Derivative	0
CAD
Derivative [Line Items]
Notional amounts at January 1	$ 55,000,000	$ 56,000,000
New contracts	0	5,000,000
Matured, expired or settled contracts	(9,000,000)	(6,000,000)
Notional amounts at March 31	$ 46,000,000	$ 55,000,000
Weighted average forward rate at March 31	1.28	1.28
Active contracts at March 31 | Derivative	20	24
CNY
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 March 31		$ 0
Weighted average forward rate at March 31		0
Active contracts at March 31 | Derivative		0
EUR
Derivative [Line Items]
Notional amounts at January 1	$ 314,000,000	$ 233,000,000
New contracts	0	28,000,000
Matured, expired or settled contracts	(35,000,000)	(25,000,000)
Notional amounts at March 31	$ 279,000,000	$ 236,000,000
Weighted average forward rate at March 31	1.21	1.18
Active contracts at March 31 | Derivative	29	29
GBP
Derivative [Line Items]
Notional amounts at January 1	$ 118,000,000	$ 132,000,000
New contracts	112,000,000	0
Matured, expired or settled contracts	(21,000,000)	(24,000,000)
Notional amounts at March 31	$ 209,000,000	$ 108,000,000
Weighted average forward rate at March 31	1.22	1.30
Active contracts at March 31 | Derivative	22	18
JPY
Derivative [Line Items]
Notional amounts at January 1	$ 177,000,000	$ 153,000,000
New contracts	0	0
Matured, expired or settled contracts	(20,000,000)	(19,000,000)
Notional amounts at March 31	$ 157,000,000	$ 134,000,000
Weighted average forward rate at March 31	104.86	106.20
Active contracts at March 31 | Derivative	30	30