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Leases - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Leases [Abstract] |  |  |  |
Airplane operating lease period | 7 years |  |  |
Maximum residual value guarantee | $ 11.1 |  |  |
Fair value of residual value guarantee, fair value of operating lease asset, threshold | $ 14.4 |  |  |
Operating lease, rent expense |  | $ 37.4 | $ 39.5 | $ 34.0

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- Definition Airplane Operating Lease Period Years + References No definition available. + Details
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- Definition Fair Value Of Residual Value Guarantee Fair Value of Operating Lease Asset Threshold + References No definition available. + Details
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- References No definition available. + Details
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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918638-209977 + Details
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- Definition Amount of residual asset covered by residual value guarantee under operating lease. Excludes guarantee considered to be lease payments for lessor. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b)(3) -URI http://asc.fasb.org/extlink&oid=124258985&loc=SL77919359-209981 + Details
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