Employee Compensation Plans - Additional Information (Detail) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2017 |
Dec. 31, 2016 |
Dec. 31, 2015 |
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| Compensation Related Costs [Abstract] | |||
| Contribution made by company to its profit sharing plan | $ 4.8 | $ 4.8 | $ 4.3 |
| Expenses relating to international deferred compensation plans | $ 6.4 | 5.8 | 5.5 |
| Percentage of matching contribution related to the Management Deferred Compensation Plan and the Senior Executive Deferred Compensation Plan | 3.50% | ||
| Deferred compensation plans expense excluding participant contributions | $ 6.7 | 3.6 | $ 0.1 |
| Total long-term deferred compensation liability | 58.1 | 50.0 | |
| Value of the assets in the rabbi trust | $ 33.6 | $ 30.6 | |
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- Definition Contribution made by company to its profit sharing plan. No definition available.
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- Definition Deferred Compensation Plan Excluding Contribution Expenses No definition available.
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- Definition Expenses relating to international deferred compensation plans. No definition available.
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- Definition Percentage of matching contribution related to the management deferred compensation plan and the senior executive deferred compensation plan. No definition available.
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- References No definition available.
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- Definition Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer). No definition available.
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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