Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013		Dec. 31, 2012		Dec. 31, 2011
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, January 1, 2013	$ (94,413)	[1]
Other comprehensive income (loss)	(60,599)
Amounts reclassified from AOCI	14,881
Other comprehensive income, net of tax	(45,773)	[2]	7,682	[2]	62,419	[2]
Balance, December 31, 2013	(140,131)	[1]	(94,413)	[1]
Unrealized holding gain (Loss) on investment
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, January 1, 2013	(2,316)
Other comprehensive income (loss)	920
Amounts reclassified from AOCI	1,634
Other comprehensive income, net of tax	2,554
Balance, December 31, 2013	238
Deferred gain (loss) on derivatives
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, January 1, 2013	11,735
Other comprehensive income (loss)	(52,781)
Amounts reclassified from AOCI	(4,340)
Other comprehensive income, net of tax	(57,121)
Balance, December 31, 2013	(45,386)
Foreign currency gain (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, January 1, 2013	(3,366)
Other comprehensive income (loss)	804
Amounts reclassified from AOCI
Other comprehensive income, net of tax	804
Balance, December 31, 2013	(2,562)
Defined benefit pension plans gain (loss)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, January 1, 2013	(100,466)
Other comprehensive income (loss)	(9,542)
Amounts reclassified from AOCI	17,587
Other comprehensive income, net of tax	8,045
Balance, December 31, 2013	$ (92,421)

[1] The tax impact on amounts presented in AOCI are not significant.

[2] The tax impact on amounts presented in other comprehensive income are not significant.