Debt - Chapter 11 Proceedings - Predecessor Debt (Details) - FLLO Term Loan, Second Lien Notes, and Unsecured Senior and Convertible Senior Notes	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Applicable margin	2.00%	7.00%
London interbank offered rate (LIBOR)
Debt Instrument [Line Items]
Variable rate percentage	8.00%
Alternative Base Rate
Debt Instrument [Line Items]
Variable rate percentage	3.25%