LEASES - Rent Expense (Details) - USD ($) $ in Thousands  | 
5 Months Ended | 7 Months Ended | 12 Months Ended | |
|---|---|---|---|---|
Mar. 31, 2020  | 
Oct. 31, 2019  | 
Mar. 31, 2021  | 
Mar. 31, 2019  | 
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| All operating leases | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Rent expense | $ 50,061 | $ 101,543 | $ 120,309 | $ 192,316 | 
| Aircraft | ||||
| Lessee, Lease, Description [Line Items] | ||||
| Rent expense | $ 43,044 | $ 88,599 | $ 97,919 | $ 168,299 | 
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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. No definition available. 
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- Definition Amount of operating lease expense. Excludes sublease income. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef 
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- Details 
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- Details 
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