Debt - Schedule of Cash Flows Related to Debt Borrowings and Repayments (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Other debt borrowings
Borrowings - FILO	$ 0.0	$ 58.9
Receipt of DIP financing	0.0	1,250.0
Other debt borrowings	0.3	2.1
Other debt repayments
Repayment of term loans	(200.0)	(400.6)
Revolving credit facility repayments	0.0	(188.3)
Repayments - FILO	0.0	(58.9)
Other debt repayments	(0.1)	(2.1)
Other debt repayments	(200.2)	(649.9)
Other debt borrowings
Other debt borrowings
Other debt borrowings	0.3	1,311.0
Exit Facility
Other debt repayments
Repayment of term loans	(200.0)	0.0
ABL Facility
Other debt repayments
Revolving credit facility repayments	0.0	(188.3)
FILO Facility
Other debt repayments
Repayments - FILO	0.0	(58.9)
Superpriority Term Loans
Other debt repayments
Repayment of term loans	0.0	(400.6)
Line of Credit | Revolving Facility | Revolving Credit Agreement
Short-term Debt [Line Items]
Revolving credit facility borrowings	200.0	0.0
Revolving credit facility repayments	(160.7)	0.0
FILO
Other debt borrowings
Borrowings - FILO	0.0	58.9
DIP Facility
Other debt borrowings
Receipt of DIP financing	0.0	1,250.0
International short-term uncommitted lines of credit borrowings
Other debt borrowings
Other debt borrowings	0.3	2.1
Other debt repayments
Other debt repayments	(0.2)	(0.5)
Term Loan B Facility - USD
Other debt repayments
Other debt repayments	0.0	(1.3)
Term Loan B Facility - Euro
Other debt repayments
Other debt repayments	$ 0.0	$ (0.3)