Employee Benefits - Amounts Recognized in Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Other assets	$ 33,345	$ 67,518
Retirement liabilities	(337,927)	(315,633)
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets
Other current liabilities	(3,855)	(3,615)
Retirement liabilities	(164,562)	(147,541)
Net amount recognized	(168,417)	(151,156)
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Other assets	33,345	67,518
Other current liabilities	(621)	(631)
Retirement liabilities	(36,700)	(34,752)
Net amount recognized	$ (3,976)	$ 32,135