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Revenue from Contracts with Customers Components of Trade Receivables (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, Notes, Trade and Other Receivables Disclosure [Text Block] | The table below represents the balances of our customer receivables and deferred revenues.
| September 30, |
| 2022 |  | 2021 |
| (in millions) |
Billed receivables | $ | 230.5 |  |  | $ | 213.4 |  |
Unbilled receivables | 3.1 |  |  | 2.3 |  |
Gross customer receivables | $ | 233.6 |  |  | $ | 215.7 |  |
Allowance for credit losses | (5.6) |  |  | (3.5) |  |
Receivables, net | $ | 228.0 |  |  | $ | 212.2 |  |
Deferred revenues | $ | 8.1 |  |  | $ | 5.4 |  |
Billed receivables | $ 230.5 | $ 213.4
Unbilled receivables | 3.1 | 2.3
Total customer receivables | 233.6 | 215.7
Deferred revenues | $ 8.1 | $ 5.4

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=124259787&loc=d3e4428-111522 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)(a)(1)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Amounts due for billed services rendered or to be rendered, actions taken or to be taken, or a promise to refrain from taking certain actions in accordance with the terms of a legally binding agreement between the Company and, at a minimum, one other party. An example would be amounts billed to customers under contracts or programs but not paid as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 912 -SubTopic 310 -Section 45 -Paragraph 2 -URI https://asc.fasb.org/extlink&oid=126938201&loc=d3e55302-109406 + Details
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- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(26)(c)) -URI https://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition The entire disclosure for claims held for amounts due a entity, excluding financing receivables. Examples include, but are not limited to, trade accounts receivables, notes receivables, loans receivables. Includes disclosure for allowance for credit losses. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -URI https://asc.fasb.org/subtopic&trid=2196772 + Details
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- Definition Amount received for services rendered and products shipped, but not yet billed, for non-contractual agreements due within one year or the normal operating cycle, if longer. + References No definition available. + Details
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