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Revenue and Contract Balances - Uncompleted Contracts (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
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Revenue from Contract with Customer [Abstract] |  |
Costs incurred on uncompleted contracts | $ 389.8 | $ 339.3
Estimated earnings | 41.1 | 38.3
Subtotal | 430.9 | 377.6
Billings to date | (437.1) | (375.5)
Total | $ (6.2) | $ 2.1

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- Definition Actual material, labor and overhead costs incurred on uncompleted contracts + References No definition available. + Details
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- Definition Estimated earnings on the amount of revenue recognized as a results of actual work completed + References No definition available. + Details
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- Definition Unbilled Contracts Receivable (Liability) + References No definition available. + Details
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- Definition Amount billed to customers under long-term contracts or programs but not paid. Excludes amounts due that have been withheld because of retainage provisions in a contract. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=119991564&loc=SL119991595-234733 + Details
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- Definition Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 910 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=119991564&loc=SL119991585-234733 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)(c)(3)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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