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Income Taxes (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Jun. 30, 2021
Income Tax Disclosure [Abstract] |  |  |
Effective Income Tax Rate Reconciliation, Percent | 23.10% | (9.80%) |
Effective Income Tax Rate Reconciliation, Deduction, Other, Amount |  | $ 1.0 |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
CARES Act NOL Carryback Benefit | $ 0.3 |  | $ 5.2
CARES Act Deferred Payroll Tax Liability | 11.1 |  |
Prior Year Carryback Income Tax Receivable |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Increase (Decrease) in Income Taxes Receivable | 13.6 |  |
Prior Year Overpayment Income Tax Receivable |  |  |
Investments, Owned, Federal Income Tax Note [Line Items] |  |  |
Increase (Decrease) in Income Taxes Receivable | $ 2.4 |  |

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to other deductions. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32687-109319 + Details
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- Definition The increase (decrease) during the reporting period in income taxes receivable, which represents the amount due from tax authorities for refunds of overpayments or recoveries of income taxes paid. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585 + Details
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