Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2013 Domestic Plans	Dec. 31, 2012 Domestic Plans	Dec. 31, 2011 Domestic Plans	Dec. 31, 2013 TCN Plan	Dec. 31, 2012 TCN Plan	Dec. 31, 2011 TCN Plan
Net Period Benefit Cost Assumptions [Line Items]
Service cost								$ 2,740
Interest cost			23,996	26,522	28,454	1,867	1,843	2,379
Expected return on plan assets			(38,305)	(35,811)	(30,216)	(2,602)	(2,443)	(2,450)
Amortization of net loss			11,675	9,725	15,842	2,029	1,785	2,736
Amortization of prior service cost (credit)								16
Recognized (gain) loss due to curtailments and other adjustments			3,907	(91)	(24)			15
Net periodic benefit cost			1,272	345	14,056	1,294	1,185	5,436
Increase (decrease) in accumulated other comprehensive loss due to actuarial losses-before taxes			18,151	19,580	(37,973)	(10,822)	3,998	10,008
Decrease in accumulated other comprehensive loss due to curtailment gain								(17,267)
Net periodic benefit cost			$ 18,151	$ 19,580	$ (37,973)	$ (10,822)	$ 3,998	$ (7,259)
Weighted average assumptions used to determine net periodic benefit cost for the years ended December 31:
Discount rate			4.00%	4.80%	5.75%	4.00%	4.80%	5.75%
Expected return on plan assets	6.50%	5.30%	6.50%	6.50%	5.75%	6.90%	6.90%	5.75%
Rate of compensation increase								4.50%