Valuation And Qualifying Accounts Disclosure Table (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Valuation and Qualifying Accounts Disclosure [Line Items]
Ending balance	$ 42,900		$ 44,300
Allowance for Doubtful Accounts
Valuation and Qualifying Accounts Disclosure [Line Items]
Beginning balance	16,000		17,119		14,154
Additions charged to costs and expenses	1,615		4,447		4,300
Deductions	4,040	[1]	4,724	[1]	1,152	[1]
Other changes	420	[2]	(842)	[2]	(183)	[2]
Ending balance	$ 13,995		$ 16,000		$ 17,119

[1] Uncollectible accounts written off, net of recoveries

[2] Result of foreign currency effects