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Letters of Credit (Details) - Standby letter of credit facility - 8.00% senior secured notes due in 2025 - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Line of Credit Facility [Line Items]    
Letters of credit, limit, amount $ 85.0 $ 85.0
Restricted cash 75.0 75.0
Letter of credit facility, amount outstanding $ 31.0 $ 26.7