Other (Income) Expense, Net (Detail) (USD $)	3 Months Ended					12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Dec. 31, 2011	Sep. 30, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Components of Other Income (Expense) [Line Items]
Interest income						$ (5,500,000)	$ (3,500,000)	$ (3,700,000)
Foreign exchange (gains) losses						(700,000)	2,000,000	(700,000)
Asset impairments		13,200,000	9,000,000			22,200,000
Restructuring	19,000,000				10,000,000	17,400,000	7,800,000	16,700,000
Legal settlements and commitments							246,500,000
Impairment charges for bonds				4,500,000	7,000,000		11,500,000
Acquisition-related items				4,100,000		2,100,000	4,400,000	9,300,000
Other, net						4,800,000	3,200,000	3,000,000
Total other (income) expense, net						$ 40,300,000	$ 271,900,000	$ 24,600,000