Accumulated Other Comprehensive Income (Loss) - Reclassifications of Accumulated Other Comprehensive Income to Consolidated Statement of Comprehensive Income (Detail) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule Of Reclassification Of Accumulated Other Comprehensive Income Loss [Line Items]
(Losses) gains on derivatives qualifying as hedges, net of tax				$ 11,333	$ (2,906)
Settlements / curtailments				0	32
Prior service cost	[1]			3,472	3,489
Actuarial losses	[1]			(27,134)	(21,648)
(Losses) gains on pension and postretirement liability adjustments, net of tax		$ (5,478)	$ (3,951)	(16,501)	(12,716)
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				13,189	(3,723)
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				(207)	(207)
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				(1,649)	1,024
Provision for income taxes for gains (Losses) on pension and postretirement liability adjustments				$ 7,161	$ 5,475

[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.