Schedule of Restructuring Accruals Expenses (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Restructuring Reserve [Roll Forward]
Restructuring expenses	$ 0	$ 32,473	$ 12,314
2011 restructuring initiative
Restructuring Reserve [Roll Forward]
Beginning balance	10,887	5,875
Restructuring expenses	0	32,473	12,314
Payments, utilization and other	(10,887)	(27,461)
Ending balance	$ 0	$ 10,887	$ 5,875