Reclassification Adjustments Out of Accumulated Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Other Comprehensive Income Loss Reclassification Adjustment [Line Items]
Amount reclassified from AOCI, net of tax	$ 869		$ (277)
Amount reclassified from AOCI, net of tax	1,889		1,672
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Treasury Lock
Other Comprehensive Income Loss Reclassification Adjustment [Line Items]
Amount reclassified from AOCI, before tax	(1,413)	[1]
Amount reclassified from AOCI, tax benefit	549
Amount reclassified from AOCI, net of tax	(864)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges | Foreign Exchange Contract
Other Comprehensive Income Loss Reclassification Adjustment [Line Items]
Amount reclassified from AOCI, before tax	(9)	[2]
Amount reclassified from AOCI, tax benefit	4
Amount reclassified from AOCI, net of tax	(5)
Accumulated Defined Benefit Plans Adjustment
Other Comprehensive Income Loss Reclassification Adjustment [Line Items]
Amortization of prior service costs	(1,454)	[3]
Amortization of actuarial gains / (losses)	(1,636)	[3]
Amount reclassified from AOCI, before tax	(3,090)
Amount reclassified from AOCI, tax benefit	1,201
Amount reclassified from AOCI, net of tax	$ (1,889)

[1] This AOCI component is included in interest expense, net. See Note 10 for additional information.

[2] This AOCI component is included as depreciation in cost of sales. See Note 10 for additional information.

[3] These AOCI components are included in the computation of net pension and postretirement costs. See Note 8 for additional information.