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Multiemployer Pension Plans - Additional Information (Details) $ in Millions | 12 Months Ended
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Dec. 31, 2020 USD ($)
Multiemployer Pension Plan Disclosure [Line Items] |
Percentage of employees participating in multiemployer pension plans to total employees | 50.00%
Company's contributions to the multiemployer plans is less than | 5.00%
Minimum |
Multiemployer Pension Plan Disclosure [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | $ 3.0
Maximum |
Multiemployer Pension Plan Disclosure [Line Items] |
Estimated annual contribution to pension and other postretirement benefit plans | $ 5.0

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- Definition Multiemployer Pension Plan Disclosure [Line Items] + References No definition available. + Details
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- Definition Multiemployer Plans, Collective Bargaining Arrangement, Percentage Of Employer's Participants To All Employees + References No definition available. + Details
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- Definition Percentage of employer contribution required by collective-bargaining arrangement (CBA) to total employer contribution for multiemployer pension plan determined to be individually significant. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 80 -Section 50 -Paragraph 5 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947 + Details
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