Financial Instruments and Fair Value Measurements - Schedule of Fair Value of Derivative Financial Instruments (Detail) - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Derivatives Fair Value [Line Items]
Asset	$ 11,466	$ 19,139
Liability	12,720	32,229
Forwards [Member] | Mexico, Pesos
Derivatives Fair Value [Line Items]
Asset	373	0
Liability	0	0
Undesignated Derivatives [Member] | Forwards [Member] | GBP
Derivatives Fair Value [Line Items]
Asset	142	2,440
Liability	4,017	8,103
Undesignated Derivatives [Member] | Forwards [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	1,469	0
Liability	253	1,698
Undesignated Derivatives [Member] | Forwards [Member] | EUR
Derivatives Fair Value [Line Items]
Asset	3,619	2
Liability	6,380	14,234
Undesignated Derivatives [Member] | Forwards [Member] | JPY
Derivatives Fair Value [Line Items]
Asset	3,992	6,474
Liability	1,235	931
Designated As Hedging Instrument [Member] | Net Investment Hedges [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	1,871	0
Liability	0	7,263
Designated As Hedging Instrument [Member] | Net Investment Hedges [Member] | EUR
Derivatives Fair Value [Line Items]
Asset	0	0
Liability	280	0
Designated As Hedging Instrument [Member] | Cash Flow Hedges [Member] | CAD
Derivatives Fair Value [Line Items]
Asset	0	10,223
Liability	0	0
Designated As Hedging Instrument [Member] | Cash Flow Hedges [Member] | EUR
Derivatives Fair Value [Line Items]
Asset	0	0
Liability	$ 555	$ 0