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Employee Compensation Plans - Additional Information (Detail) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Compensation Related Costs [Abstract] |  |  |
Contribution made by company to its profit sharing plan | $ 5.7 | $ 4.8 | $ 4.8
Expenses relating to international deferred compensation plans | $ 6.6 | 6.4 | 5.8
Percentage of matching contribution related to the Management Deferred Compensation Plan and the Senior Executive Deferred Compensation Plan | 3.50% |  |
Deferred compensation plans expense (benefit) excluding participant contributions | $ (2.7) | 6.7 | $ 3.6
Total long-term deferred compensation liability | 51.3 | 58.1 |
Value of the assets in the rabbi trust | $ 31.2 | $ 33.6 |

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- Definition Percentage of matching contribution related to the management deferred compensation plan and the senior executive deferred compensation plan. + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of assets held under deferred compensation agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.17) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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