Accumulated Other Comprehensive Income (Loss) - Schedule of Changes in Accumulated Other Comprehensive Income (Loss) (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss (income), net of tax, beginning balance			$ (540,430)	$ (392,711)
OCI before reclassifications			(76,374)	(21,972)
Amounts reclassified from AOCI			5,168	15,622
Net current period other comprehensive income (loss)	$ (55,388)	$ (15,347)	(71,206)	(6,350)
Accumulated other comprehensive loss (income), net of tax, ending balance	(611,636)	(399,061)	(611,636)	(399,061)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss (income), net of tax, beginning balance			(173,342)	(104,278)
OCI before reclassifications			(81,326)	(26,872)
Amounts reclassified from AOCI			0	0
Net current period other comprehensive income (loss)			(81,326)	(26,872)
Accumulated other comprehensive loss (income), net of tax, ending balance	(254,668)	(131,150)	(254,668)	(131,150)
Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss (income), net of tax, beginning balance			12,371	(4,012)
OCI before reclassifications			4,952	4,900
Amounts reclassified from AOCI			(11,333)	2,906
Net current period other comprehensive income (loss)			(6,381)	7,806
Accumulated other comprehensive loss (income), net of tax, ending balance	5,990	3,794	5,990	3,794
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Accumulated other comprehensive loss (income), net of tax, beginning balance			(379,459)	(284,421)
OCI before reclassifications			0	0
Amounts reclassified from AOCI			16,501	12,716
Net current period other comprehensive income (loss)			16,501	12,716
Accumulated other comprehensive loss (income), net of tax, ending balance	$ (362,958)	$ (271,705)	$ (362,958)	$ (271,705)