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v3.3.1.900

Pension and Postretirement Benefits - Multi-employer pension plans (Parenthetical) (Details) | 12 Months Ended
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Dec. 31, 2015 PensionFund
Compensation And Retirement Disclosure [Abstract] |
Percentage of excess employer contributions | 5.00%
Aggregate number of funds | 45

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- References No definition available. + Details
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- Definition Pension Plan, Aggregate Number of Funds + References No definition available. + Details
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- Definition Percentage of excess employer contribution made with base of plans forms. + References No definition available. + Details
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