Net Sales Based On Location of External Customers by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Segment Reporting Information [Line Items]
Net sales	$ 740,300		$ 730,000
United States
Segment Reporting Information [Line Items]
Net sales	498,500		496,200
Europe
Segment Reporting Information [Line Items]
Net sales	116,800	[1]	116,700	[1]
Japan
Segment Reporting Information [Line Items]
Net sales	40,000		39,100
Other
Segment Reporting Information [Line Items]
Net sales	$ 85,000	[1]	$ 78,000	[1]

[1] Beginning in 2013, certain emerging markets in Europe are included in the "other" geographic region. Prior year amounts have been reclassified to conform to the current year presentation.