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Employee Benefit Plans - Additional information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2019 USD ($) item | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Multiemployer Plans, Pension [Member] |  |  |
Number of local unions (union) | item | 100 |  |
Other Postretirement Benefits Plan [Member] | UNITED STATES [Member] | Profit Sharing And Thrift Employee Benefit Plan [Member] |  |  |
Contributions to benefit plans | $ | $ 10.9 | $ 5.8 | $ 4.1

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- Definition Represents the number of local unions. + References No definition available. + Details
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- Definition Amount of cost for defined contribution plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 70 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942 + Details
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- Details
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- Details
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- Details
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- Details
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