Revenues by Geographic Area (Parenthetical) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales	$ 7,117,813		$ 7,052,603		$ 6,841,087
North American Region
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales	3,839,973	[1]	3,926,515	[1]	3,839,382	[1]
North American Region | United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Gross sales	$ 3,580,000		$ 3,610,000		$ 3,580,000

[1] Revenues for the North American Region include revenues attributable to the US of $3.58 billion, $3.61 billion, and $3.58 billion for 2013, 2012, and 2011, respectively.