Accumulated Other Comprehensive Loss - Additional Information (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) arising During Period Related to Translation of Foreign Subsidiaries utilizing a Functional Currency Other Than the US Dollar	$ (29,272)	$ 63,874	$ (17,753)
Foreign Currency Translation, Tax Benefit (Provision) Related to Net Investment Hedges	(3,914)	17,131	(2,829)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, before Tax	(5,700)	(3,400)	(5,000)
Benefit for Income Taxes	1,500	1,200	1,800
Amortization of Net Actuarial (Losses), before Tax	(6,900)	(6,500)	(8,000)
Net Prior Service Credit Arising During the Period, Before Tax	1,200	3,100	3,000
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) arising During Period Related to Translation of Foreign Subsidiaries utilizing a Functional Currency Other Than the US Dollar	(47,300)	94,700	(20,600)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation Gain (Loss) Related to Net Investment Hedges, before Reclassification and Tax	16,600	(46,100)	7,600
Foreign Currency Translation, Tax Benefit (Provision) Related to Net Investment Hedges	(3,900)	17,100	(2,800)
Other Comprehensive Income (Loss), Foreign Currency Transaction and Translation (Loss) Arising During Period Related to Intra-Entity Transactions of a Long-Term Investment Nature, Net of Tax	$ 5,300	$ (1,800)	$ (2,000)