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Fair Value - Schedule of Carrying Amounts and Estimated Fair Values of Financial Instruments and Nonfinancial Assets Measured at Fair Value on a Recurring or Non-recurring basis or Disclosed, but not Carried, at Fair Value (Footnote) (Details) - USD ($)
$ in Millions
Dec. 31, 2023
Dec. 31, 2022
May 03, 2021
Mar. 04, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Senior Notes $ 595.8 $ 599.6    
12% Paid in Cash or 13.25% Paid in Kind Senior Notes, Due 2027        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Senior Notes       $ 199.5
Level 3 | 7.875% Senior Notes, Due 2026        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Senior Notes       $ 400.0
Level 3 | 12% Paid in Cash or 13.25% Paid in Kind Senior Notes, Due 2027        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Senior Notes     $ 85.5