Basis of Presentation and Significant Accounting Policies - Components of Accumulated Other Comprehensive Income (Loss) Reclassified (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended						6 Months Ended		9 Months Ended				3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2014		Jun. 30, 2014	Sep. 30, 2013		Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2014 Foreign currency gain (loss)	Sep. 30, 2013 Foreign currency gain (loss)	Sep. 30, 2014 Foreign currency gain (loss)	Sep. 30, 2013 Foreign currency gain (loss)	Sep. 30, 2014 Unrealized holding loss on investment	Sep. 30, 2013 Unrealized holding loss on investment	Sep. 30, 2013 Unrealized holding loss on investment	Dec. 31, 2013 Unrealized holding loss on investment	Sep. 30, 2014 Deferred gain (loss) on derivatives	Sep. 30, 2013 Deferred gain (loss) on derivatives	Sep. 30, 2014 Deferred gain (loss) on derivatives	Sep. 30, 2013 Deferred gain (loss) on derivatives	Sep. 30, 2014 Defined benefit pension plans loss	Sep. 30, 2013 Defined benefit pension plans loss	Sep. 30, 2014 Defined benefit pension plans loss	Sep. 30, 2013 Defined benefit pension plans loss
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning Balance	$ (119,221)			$ (156,673)			$ (140,131)	$ (94,413)	$ (140,131)		$ (94,413)		$ (3,821)	$ (2,886)	$ (2,562)	$ (3,366)	$ 245	$ (1,875)	$ (2,316)	$ 238	$ (30,090)	$ (58,316)	$ (45,386)	$ 11,735	$ (85,555)	$ (93,596)	$ (92,421)	$ (100,466)
Other comprehensive income (loss) before reclassification	(41,025)			23,680					(29,478)		(46,412)		(1,455)	(1,245)	(2,714)	(765)	(7)	158	599		(39,563)	24,767	(26,764)	(46,246)
Amounts reclassified from AOCI	10,082			3,758					19,445		11,590										6,650	320	9,147	1,282	3,432	3,438	10,298	10,308
Other comprehensive loss, net of tax	(30,960)	[1]		27,441	[1]		(10,080)	(34,846)	(10,080)	[1]	(34,846)	[1]	(1,455)	(1,245)	(2,714)	(765)	(7)	158	599		(32,913)	25,087	(17,617)	(44,964)	3,432	3,438	10,298	10,308
Ending Balance	(150,164)		(119,221)	(129,235)		(156,673)	(119,221)	(156,673)	(150,164)		(129,235)		(5,276)	(4,131)	(5,276)	(4,131)	238	(1,717)	(1,717)	238	(63,003)	(33,229)	(63,003)	(33,229)	(82,123)	(90,158)	(82,123)	(90,158)
Other comprehensive income, net of tax including minority interest effect			$ (30,943)			$ 27,438	$ (10,033)	$ (34,822)

[1] The tax impacts on amounts presented in other comprehensive income are not significant.