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Leases - Narrative (Details) ft² in Thousands, $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Mar. 31, 2022 USD ($) ft² | Mar. 31, 2021 USD ($) | Dec. 31, 2020 USD ($) | Mar. 31, 2022 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |
Sublease Income |  |  |  | $ 16.0
Sublease income payment remainder of fiscal year | $ 3.6 |  |  | 3.6
Payment to be received between year two through four | $ 12.4 |  |  | $ 12.4
Operating Lease, Impairment Loss |  | $ 23.5 | $ 6.7 |
Office Building |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |
Operating lease, number of square feet | ft² | 515 |  |  |

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- Definition Lessor, Operating Lease, Payments to be Received, Two To Four Years + References No definition available. + Details
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- Definition Operating Lease, Number of Square Feet + References No definition available. + Details
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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 of lease payment to be received by lessor for operating lease in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach). + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919396-209981 + Details
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- Definition Amount of loss from impairment of right-of-use asset from operating lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 25 -Paragraph 6 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=123399704&loc=SL77918431-209957 + Details
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- Definition Amount of sublease income excluding finance and operating lease expense. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=123408670&loc=SL77918686-209980 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 55 -Paragraph 53 -URI http://asc.fasb.org/extlink&oid=123414884&loc=SL77918982-209971 + Details
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- Details
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