Components of Other Comprehensive Income Loss (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Pre-tax
Cumulative translation adjustment, Pre-tax	$ 28,835	$ 23,335	$ 5,726	$ 11,635
Pension and other postretirement adjustments, Pre-tax	1,328	2,217	4,784	7,024
Reclassification adjustments for derivatives, Pre-tax	1,847	1,898	5,587	5,743
Total other comprehensive income (loss), Pre-tax	32,010	27,450	16,097	24,402
Tax
Cumulative translation adjustment, Tax	0	0	0	0
Pension and other postretirement adjustments, tax	(632)	(789)	(1,877)	(2,508)
Reclassification adjustments for derivatives, tax	(673)	(694)	(2,036)	(2,099)
Total other comprehensive income (loss), Tax	(1,305)	(1,483)	(3,913)	(4,607)
Net of tax
Cumulative translation adjustment, net of tax	28,835	23,335	5,726	11,635
Pension and other postretirement adjustments (net of tax of $1,877)	696	1,428	2,907	4,516
Reclassification adjustments for derivatives, net of tax	1,174	1,204	3,551	3,644
Other comprehensive income	$ 30,705	$ 25,967	$ 12,184	$ 19,795