Changes in Accumulated Balances for Each Component of Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
Accumulated Other Comprehensive Loss [Line Items]
Derivative Instruments, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of beginning period	$ 4,426	$ 18,890	$ (2,583)	$ 24,616
Other comprehensive (loss) income before reclassifications	(872)	11,968	7,266	10,780
Amounts reclassified from accumulated other comprehensive income (loss)	326	(4,328)	(803)	(8,866)
Net (decrease) increase in other comprehensive income	(546)	7,640	6,463	1,914
Derivative Instruments, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of end period	3,880	26,530	3,880	26,530
Defined Benefit Pension Plans, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of beginning period	(187,225)	(170,875)	(190,656)	(172,398)
Other comprehensive income (loss) before reclassifications	314	(1,756)	625	(4,311)
Amounts reclassified from accumulated other comprehensive income (loss)	3,120	4,084	6,240	8,162
Net (decrease) increase in other comprehensive income	3,434	2,328	6,865	3,851
Defined Benefit Pension Plans, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of end period	(183,791)	(168,547)	(183,791)	(168,547)
Currency Translation Adjustments, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of beginning period	(298,626)	(243,560)	(271,247)	(298,863)
Other comprehensive (loss) income before reclassifications	(37,383)	(73,654)	(64,762)	(18,351)
Net (decrease) increase in other comprehensive income	(37,383)	(73,654)	(64,762)	(18,351)
Currency Translation Adjustments, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of end period	(336,009)	(317,214)	(336,009)	(317,214)
Total, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of beginning period	(481,425)	(395,545)	(464,486)	(446,645)
Other comprehensive (loss) income before reclassifications	(37,941)	(63,442)	(56,871)	(11,882)
Amounts reclassified from accumulated other comprehensive income (loss)	3,446	(244)	5,437	(704)
Net (decrease) increase in other comprehensive income	(34,495)	(63,686)	(51,434)	(12,586)
Total, Accumulated Other Comprehensive Income (Loss), Net of Tax, as of end period	$ (515,920)	$ (459,231)	$ (515,920)	$ (459,231)