Components of Net Periodic Benefit Cost and Other Amounts Recognized in Other Comprehensive Income (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
U.S. Plans
Summary of Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income [Line Items]
Interest cost	$ 3,191	$ 3,505	$ 3,738
Expected return on plan assets	(4,192)	(4,118)	(3,603)
Amortization of net loss (gain)	1,778	1,231	1,340
Net periodic benefit cost (income)	777	618	1,475
Total net periodic benefit cost (income) recognized	777	618	1,475
Net actuarial loss (gain)	1,136	8,423	(1,032)
Amortization of net actuarial (loss) gain	(1,778)	(1,231)	(1,340)
Total recognized in other comprehensive income	(642)	7,192	(2,372)
Total recognized in net periodic benefit cost and other comprehensive income	135	7,810	(897)
Non-U.S. Plans
Summary of Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income [Line Items]
Service cost	1,136	1,205	1,054
Interest cost	10,697	12,179	11,650
Expected return on plan assets	(10,337)	(11,256)	(10,390)
Amortization of prior-service cost (credit)	36	37	29
Amortization of net loss (gain)	1,243	904	983
Net periodic benefit cost (income)	2,775	3,069	3,326
Gain due to settlements or curtailments			(818)
Total net periodic benefit cost (income) recognized	2,775	3,069	2,508
Net actuarial loss (gain)	18,593	6,641	(582)
Amortization of net actuarial (loss) gain	(1,243)	(904)	(917)
Prior service cost (credit)	84		127
Amortization of prior service (cost) credit	(36)	(37)	(29)
Effect of foreign currency exchange rate changes	1,827	(442)	(3,704)
Total recognized in other comprehensive income	19,225	5,258	(5,105)
Total recognized in net periodic benefit cost and other comprehensive income	22,000	8,327	(2,597)
Other Postretirement Benefits
Summary of Components of Net Periodic Benefit Cost and Other Changes in Plan Assets and Benefit Obligations Recognized in Other Comprehensive Income [Line Items]
Service cost	27	28	26
Interest cost	591	769	888
Amortization of prior-service cost (credit)	(401)	(59)	(128)
Amortization of net loss (gain)	(893)	(1,271)	(1,446)
Net periodic benefit cost (income)	(676)	(533)	(660)
Total net periodic benefit cost (income) recognized	(676)	(533)	(660)
Net actuarial loss (gain)	(382)	1,812	(1,304)
Amortization of net actuarial (loss) gain	893	1,271	1,446
Prior service cost (credit)	(9,573)
Amortization of prior service (cost) credit	401	59	128
Effect of foreign currency exchange rate changes	9	39	(16)
Total recognized in other comprehensive income	(8,652)	3,181	254
Total recognized in net periodic benefit cost and other comprehensive income	$ (9,328)	$ 2,648	$ (406)