Amounts Recognized in Consolidated Balance Sheet (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Defined Benefit Plan Disclosure [Line Items]
Payroll and benefit-related liabilities	$ (73,090)	$ (74,586)
Pension and postretirement benefit liabilities	(109,498)	(170,946)
Pension
Defined Benefit Plan Disclosure [Line Items]
Payroll and benefit-related liabilities	(1,819)	(1,784)
Pension and postretirement benefit liabilities	(60,431)	(118,537)
Accumulated other comprehensive loss	144,866	186,916
Amounts recognized in balance sheet	82,616	66,595
Other Benefit
Defined Benefit Plan Disclosure [Line Items]
Payroll and benefit-related liabilities	(3,381)	(3,200)
Pension and postretirement benefit liabilities	(49,067)	(52,409)
Accumulated other comprehensive loss	7,073	12,254
Amounts recognized in balance sheet	$ (45,375)	$ (43,355)