Net Sales Based on Location of External Customers by Geographic Region (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014		Sep. 30, 2013
Segment Reporting Information [Line Items]
Net sales	$ 830,000		$ 758,000		$ 2,456,400		$ 2,258,200
United States
Segment Reporting Information [Line Items]
Net sales	565,400		500,300		1,671,900		1,496,400
Europe
Segment Reporting Information [Line Items]
Net sales	118,800	[1]	113,800	[1]	365,300	[1]	347,900	[1]
Japan
Segment Reporting Information [Line Items]
Net sales	41,900		43,400		123,100		123,400
Other
Segment Reporting Information [Line Items]
Net sales	$ 103,900	[1]	$ 100,500	[1]	$ 296,100	[1]	$ 290,500	[1]

[1] Beginning in 2014, 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.