Components of Net Periodic Benefit Cost (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets as of December 31	$ 243,379	$ 215,775
U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Obligations as of January 1	74,867	71,116
Interest cost	3,191	3,505	3,738
Actuarial losses (gains)	4,040	5,456
Benefit payments	(5,184)	(5,210)
Benefit obligations as of December 31	76,914	74,867	71,116
Fair value of plan assets as of January 1	54,687	52,169
Actual return on plan assets	7,097	1,150
Employer contributions	3,585	6,578
Benefit payments and plan expenses	(5,184)	(5,210)
Fair value of plan assets as of December 31	60,185	54,687	52,169
Funded status as of December 31	(16,729)	(20,180)
Non-U.S. Plans
Defined Benefit Plan Disclosure [Line Items]
Obligations as of January 1	224,507	219,832
Service cost	1,136	1,205	1,054
Interest cost	10,697	12,179	11,650
Participant contributions	45	50
Actuarial losses (gains)	26,026	(843)
Plan amendments	85
Benefit payments	(8,317)	(8,109)
Transfers		3,238
Effect of foreign currency exchange rate changes	9,037	(3,045)
Benefit obligations as of December 31	263,216	224,507	219,832
Fair value of plan assets as of January 1	161,088	158,329
Actual return on plan assets	17,770	3,734
Transfers		2,617
Employer contributions	5,571	5,850
Participant contributions	45	50
Benefit payments and plan expenses	(8,317)	(8,109)
Effect of foreign currency exchange rate changes	7,037	(1,383)
Fair value of plan assets as of December 31	183,194	161,088	158,329
Funded status as of December 31	(80,022)	(63,419)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Obligations as of January 1	15,841	14,896
Service cost	27	28	26
Interest cost	591	769	888
Actuarial losses (gains)	(382)	1,811
Plan amendments	(9,573)
Benefit payments	(1,159)	(1,497)
Effect of foreign currency exchange rate changes	(32)	(166)
Benefit obligations as of December 31	5,313	15,841	14,896
Funded status as of December 31	$ (5,313)	$ (15,841)