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Receivables - Schedule of Finance and Notes Receivable Aging and Accrual Status (Details) - USD ($) $ in Millions | Sep. 30, 2020 | Sep. 30, 2019
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Finance Receivable |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Receivables on nonaccrual status | $ 0.2 | $ 2.3
Receivables past due 90 days or more and still accruing | 0.0 | 0.0
Receivables subject to general reserves | 16.3 | 10.8
Allowance for doubtful accounts | (0.4) | (0.2)
Receivables subject to specific reserves | 2.5 | 2.3
Allowance for doubtful accounts | (2.3) | (2.0)
Notes Receivable |  |
Accounts Notes And Loans Receivable [Line Items] |  |
Receivables on nonaccrual status | 0.0 | 0.0
Receivables past due 90 days or more and still accruing | 0.0 | 0.0
Receivables subject to general reserves | 0.0 | 0.0
Allowance for doubtful accounts | 0.0 | 0.0
Receivables subject to specific reserves | 0.0 | 0.4
Allowance for doubtful accounts | $ 0.0 | $ (0.4)

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- Definition The valuation allowance for financing receivables that are expected to be uncollectible that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition Amount of valuation allowance for financing receivables that are expected to be uncollectible that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=121611835&loc=SL6953423-111524 + Details
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