Employee Benefits - Accumulated Benefit Obligation (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation - end of year	$ 570,655	$ 516,747
Projected benefit obligation	573,706	523,298
Accumulated benefit obligation	570,655	516,747
Fair value of plan assets	405,289	372,142
Discount rate	4.10%	4.70%
Rate of compensation increase	3.25%	3.25%
Non-U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligation - end of year	745,828	644,548
Projected benefit obligation	43,403	39,664
Accumulated benefit obligation	41,720	38,470
Fair value of plan assets	$ 16,776	$ 16,520
Discount rate	4.14%	4.71%
Rate of compensation increase	2.73%	2.88%

For defined benefit pension plans, the actuarial present value of benefits (whether vested or nonvested) attributed by the pension benefit formula to employee service rendered before a specified date and based on employee service and compensation (if applicable) before that date. The accumulated benefit obligation differs from the projected benefit obligation in that it includes no assumption about future compensation levels. For plans with flat-benefit or nonpay-related pension benefit formulas, the accumulated benefit obligation and the projected benefit obligation are the same.

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If aggregate disclosures are presented, the aggregate pension accumulated benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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- Definition

If aggregate disclosures are presented, the aggregate fair value of plan assets for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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- Definition

If aggregate disclosures are presented, the aggregate projected benefit obligation for pension plans with accumulated benefit obligations in excess of plan assets as of the measurement date of each statement of financial position presented.

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