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Accounts Receivable, net | 9 Months Ended
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Jun. 30, 2021
Receivables [Abstract] |
Accounts Receivable, net | 4. Accounts Receivable, net Accounts receivable of $365.5 and $319.2, is net of an allowance for doubtful accounts of $5.9 and $2.8 and includes $41.3 and $45.9 of retention on incomplete projects to be completed within one year at June 30, 2021 and September 30, 2020, respectively.

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- Definition The entire disclosure for accounts receivable, contract receivable, receivable held-for-sale, and nontrade receivable. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -URI http://asc.fasb.org/topic&trid=2196771 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -URI http://asc.fasb.org/topic&trid=82887179 + Details
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- References No definition available. + Details
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