Employee Benefits - Pension and Other Defined Contribution Retirement Plan Expenses (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	$ 885,000	$ 881,000
Interest cost on projected benefit obligation	6,232,000	5,741,000
Expected return on plan assets	(6,913,000)	(6,557,000)
Net amortization and deferrals	4,255,000	5,869,000
Net periodic benefit cost	4,459,000	5,934,000
Defined contribution and other retirement plans	2,112,000	1,870,000
Total expense	6,571,000	7,804,000
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost for benefits earned	3,948,000	4,143,000
Interest cost on projected benefit obligation	8,412,000	7,874,000
Expected return on plan assets	(12,481,000)	(12,099,000)
Net amortization and deferrals	2,955,000	2,368,000
Loss due to settlements and special terminations	0	40,000
Net periodic benefit cost	2,834,000	2,326,000
Defined contribution and other retirement plans	1,177,000	1,291,000
Total expense	4,011,000	3,617,000
Maximum [Member] | Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Expected contribution to the plan	$ 21,000,000