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Contracts in Progress - Schedule of Cost and Billings on Uncompleted Construction Type Long Term Contracts or Programs (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Jun. 30, 2021 | Jun. 30, 2020
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Revenue from Contract with Customer [Abstract] |  |  |
Costs incurred on contracts (from inception to completion) | $ 199.4 | $ 185.8 | $ 152.5
Estimated earnings | 125.5 | 133.2 | 108.9
Contracts in progress | 324.9 | 319.0 | 261.4
Less: billings to date | (281.8) | (261.9) | (209.8)
Less: write-offs | 0.0 | (2.7) | 0.0
Costs in Excess of Billings Uncompleted Construction Type Contracts | $ 43.1 | $ 54.4 | $ 51.6

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- Definition Amount to be collected within one year of the balance sheet date (or one operating cycle, if longer) from customers in accordance with the contractual provisions of long-term contracts or programs including amounts billed and unbilled as of the balance sheet date. + 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 210.5-02.3(c)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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