Financial Instruments and Fair Value Measurements - Summary of Undesignated Foreign Currency Forwards Activity (Detail) - Forwards [Member] - Undesignated Derivatives [Member]	3 Months Ended
	Mar. 31, 2020 USD ($) Derivative	Mar. 31, 2019 USD ($) Derivative
Derivative [Line Items]
Notional amounts at January 1	$ 1,107,000,000	$ 669,000,000
New contracts	1,191,000,000	601,000,000
Matured, expired or settled contracts	(1,322,000,000)	(579,000,000)
Notional amounts at March 31	976,000,000	691,000,000
CAD
Derivative [Line Items]
Notional amounts at January 1	120,000,000	55,000,000
New contracts	0	0
Matured, expired or settled contracts	(11,000,000)	(9,000,000)
Notional amounts at March 31	$ 109,000,000	$ 46,000,000
Weighted average forward rate at March 31	1.32	1.28
Active contracts at March 31 | Derivative	35	20
EUR
Derivative [Line Items]
Notional amounts at January 1	$ 581,000,000	$ 314,000,000
New contracts	809,000,000	0
Matured, expired or settled contracts	(1,003,000,000)	(35,000,000)
Notional amounts at March 31	$ 387,000,000	$ 279,000,000
Weighted average forward rate at March 31	1.16	1.21
Active contracts at March 31 | Derivative	61	29
GBP
Derivative [Line Items]
Notional amounts at January 1	$ 178,000,000	$ 118,000,000
New contracts	294,000,000	112,000,000
Matured, expired or settled contracts	(267,000,000)	(21,000,000)
Notional amounts at March 31	$ 205,000,000	$ 209,000,000
Weighted average forward rate at March 31	1.77	1.22
Active contracts at March 31 | Derivative	64	22
JPY
Derivative [Line Items]
Notional amounts at January 1	$ 182,000,000	$ 177,000,000
New contracts	60,000,000	0
Matured, expired or settled contracts	(15,000,000)	(20,000,000)
Notional amounts at March 31	$ 227,000,000	$ 157,000,000
Weighted average forward rate at March 31	103.08	104.86
Active contracts at March 31 | Derivative	53	30
SEK
Derivative [Line Items]
Notional amounts at January 1	$ 31,000,000
New contracts	9,000,000
Matured, expired or settled contracts	(3,000,000)
Notional amounts at March 31	$ 37,000,000
Weighted average forward rate at March 31	9.41
Active contracts at March 31 | Derivative	32
Other
Derivative [Line Items]
Notional amounts at January 1	$ 15,000,000
New contracts	19,000,000
Matured, expired or settled contracts	(23,000,000)
Notional amounts at March 31	$ 11,000,000
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		0.00
Active contracts at March 31 | Derivative		0