Employee Benefits - Pension and Other Defined Contribution Retirement Plan Expenses (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
Defined Benefit Plan Disclosure [Line Items]
Loss due to settlements and special terminations				$ 874
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	881	938	1,762	1,877
Interest cost on projected benefit obligation	5,741	6,002	11,482	12,003
Expected return on plan assets	(6,557)	(6,041)	(13,114)	(12,083)
Net amortization and deferrals	5,869	4,913	11,738	9,825
Net periodic benefit cost	5,934	5,812	11,868	11,622
Defined contribution and other retirement plans	2,076	1,974	3,946	3,863
Total expense	8,010	7,786	15,814	15,485
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	4,027	3,164	8,170	6,358
Interest cost on projected benefit obligation	7,612	7,762	15,486	15,584
Expected return on plan assets	(11,695)	(11,401)	(23,794)	(22,888)
Net amortization and deferrals	2,284	1,607	4,652	3,221
Loss due to settlements and special terminations	35	418	75	874
Net periodic benefit cost	2,263	1,550	4,589	3,149
Defined contribution and other retirement plans	987	1,088	2,278	2,329
Total expense	$ 3,250	$ 2,638	$ 6,867	$ 5,478