Debt and Credit Arrangements - Restricted Cash and Fair Value Disclosures (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Debt Instrument
Restricted cash	$ 12.5	$ 1,941.7
Restricted cash and cash equivalents, current	$ 12.5	$ 1,941.7
Term Loan Due 2030 | Revolving Credit Facility
Debt Instrument
Debt instrument percentage over par value		100.00%
Convertible Debt | Convertible Notes, due 2024
Debt Instrument
Debt instrument percentage over par value	274.00%	201.00%
Unsecured Debt | Senior Unsecured Notes Due 2031
Debt Instrument
Debt instrument percentage over par value	107.00%	103.00%
Secured Debt | Senior Secured Notes Due 2030
Debt Instrument
Debt instrument percentage over par value	102.00%	101.00%