Changes in Accumulated Balances for Each Component of Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of Beginning Period	$ (400,264)	$ (515,920)	$ (443,676)	$ (464,486)
Other comprehensive income (loss) before reclassifications	(97,829)	24,379	(64,387)	(32,492)
Amounts reclassified from accumulated other comprehensive income (loss)	5,406	3,962	15,376	9,399
Other Comprehensive (Loss) Income, Net of Tax	(92,423)	28,341	(49,011)	(23,093)
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of End Period	(492,687)	(487,579)	(492,687)	(487,579)
Derivative Instruments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of Beginning Period	(9,500)	3,880	(10,789)	(2,583)
Other comprehensive income (loss) before reclassifications	19,745	(10,614)	15,437	(3,348)
Amounts reclassified from accumulated other comprehensive income (loss)	3,328	321	8,925	(482)
Other Comprehensive (Loss) Income, Net of Tax	23,073	(10,293)	24,362	(3,830)
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of End Period	13,573	(6,413)	13,573	(6,413)
Defined Benefit Pension Plans
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of Beginning Period	(127,201)	(183,791)	(131,946)	(190,656)
Other comprehensive income (loss) before reclassifications	139	236	511	861
Amounts reclassified from accumulated other comprehensive income (loss)	2,078	3,641	6,451	9,881
Other Comprehensive (Loss) Income, Net of Tax	2,217	3,877	6,962	10,742
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of End Period	(124,984)	(179,914)	(124,984)	(179,914)
Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of Beginning Period	(263,563)	(336,009)	(300,941)	(271,247)
Other comprehensive income (loss) before reclassifications	(117,713)	34,757	(80,335)	(30,005)
Other Comprehensive (Loss) Income, Net of Tax	(117,713)	34,757	(80,335)	(30,005)
Accumulated Other Comprehensive Income (Loss), Net of Tax, as of End Period	$ (381,276)	$ (301,252)	$ (381,276)	$ (301,252)