Accumulated Other Comprehensive Income (Loss) - Reclassifications of Accumulated Other Comprehensive Income to Statement of Income and Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges, net of tax	$ 1,498	$ (954)
Settlements/Curtailments	(40)	(456)
Prior service cost	1,098	1,053
Actuarial losses	(8,672)	(7,219)
(Losses) gains on pension and postretirement liability adjustments, net of tax	(5,132)	(4,421)
Other income, net [Member] | Cross currency swap [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges	(215)	(727)
Cost of goods sold [Member] | Forward currency contracts [Member]
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges	2,363	(313)
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	(650)	86
Provision for income taxes for Gains (losses) on pension and postretirement liability adjustments	$ 2,482	$ 2,201