Accumulated Other Comprehensive Income (Loss) - Reclassifications of Accumulated Other Comprehensive Income to Consolidated Statement of Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges, net of tax	$ 954		$ (821)
Prior service cost	1,166	[1]	1,111	[1]
Actuarial losses	(9,144)	[1]	(7,343)	[1]
(Losses) gains on pension and postretirement liability adjustments, net of tax	(5,547)		(4,365)
Cost of goods sold [Member] | Foreign currency contracts [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges	1,169		(1,038)
Interest expense [Member] | Interest rate swaps [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges	(69)		(69)
Provision for income taxes [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
Provision for income taxes for (Losses) gains on derivatives qualifying as hedges	(146)		286
Provision for income taxes for gains (Losses) on pension and postretirement liability adjustments	$ 2,431		$ 1,867

[1] The amortization of prior service cost and actuarial loss is included in the computation of net periodic benefit cost. Refer to Note 13 of our 2014 Form 10-K for additional information regarding net periodic benefit cost.