Employee Benefit Plans (Defined Benefit Pension Plans not Recognized as Component of Combined Net Period Benefit Cost) (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Amounts included in accumulated other comprehensive loss, net of tax	$ (22,940)	$ 6,113	$ 14,601
Not Recognized As Combined Net Period Benefit Cost [Member]
Defined Benefit Plan Disclosure [Line Items]
Net actuarial loss	(40,201)	(75,494)
Deferred tax benefit	14,070	26,423
Amounts included in accumulated other comprehensive loss, net of tax	$ (26,131)	$ (49,071)