Reorganizations (Details) $ in Millions							3 Months Ended
	Sep. 02, 2021 USD ($)	Mar. 26, 2021	Mar. 22, 2021	Mar. 19, 2021 USD ($)	Mar. 10, 2021	Oct. 11, 2020 USD ($)	Apr. 01, 2022 USD ($) action	Mar. 26, 2021 USD ($)	Dec. 31, 2021 USD ($)
Reorganizations [Line Items]
Restructuring Support Agreement, Common Stock Share Percentage Reorganized New Company						100.00%
Accrued interest							$ 17.4		$ 17.0
Bankruptcy Claims, Number Claims Filed | action							50,000
Cash Paid, Reorganization items							$ 79.1	$ 33.7
Restructuring Support Agreement, Proposed Settlement of General Unsecured Claims	$ 135.0
Exit Fee Percentage							1.00%
Exit Fee Percentage, Payment in full on senior secured term loans							0.50%
Consent Fee Percentage, Unsecured Notes							1.50%
Maximum
Reorganizations [Line Items]
Loss Contingency, Estimate of Possible Loss							$ 119.2
Opioid Claimant Trust [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement	1,725.0
Restructuring Support Agreement, Equity Value of Reorganized Debtors						$ 1,551.0
Restructuring Support Agreement Proposed Settlement, Year Three through Seven						150.0
Restructuring Support Agreement ProposedSettlement, Payment Year One and Two						200.0
Restructuring Support Agreement Proposed Settlement, Upfront Payment						$ 450.0
Restructuring Support Agreement Proposed Settlement, Year Eight	125.0
Opioid Claimant Trust [Member] | Other Ownership Interest [Member]
Reorganizations [Line Items]
Restructuring Support Agreement, Warrants Common Stock Share Percentage Reorganized New Company						19.99%
Medicaid Lawsuit [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement						$ 260.0
Restructuring Support Agreement, Proposed Debt, Term						7 years
Medicaid Lawsuit [Member] | Maximum
Reorganizations [Line Items]
Loss Contingency, Estimate of Possible Loss						$ 640.0
Term Loans due Sept 2024 and Feb 2025
Reorganizations [Line Items]
Repayments of Long-term Debt				$ 114.0
Proposed Debt Instrument Term					5 years 9 months
Unsecured Debt
Reorganizations [Line Items]
Increase (Decrease) in Interest Payable, Net							$ 17.7	17.7
Restructuring Support Agreement [Member] | Opioid Claimant Trust [Member]
Reorganizations [Line Items]
Restructuring Support Agreement Proposed Settlement, Year Three through Seven						150.0
Restructuring Support Agreement Proposed Settlement, Year Eight	$ 125.0
Secured Debt
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)							200.00%
Adequate Protection Payment, Expense							$ 15.7	14.5
Adequate Protection Payment, Cash Paid							$ 15.5	$ 13.8
Restructuring Support Agreement, Proposed Long-Term Debt						$ 375.0
Restructuring Support Agreement, Proposed Debt, Term						7 years
Secured Debt | Term Loan due 2024
Reorganizations [Line Items]
Proposed Debt Instrument Basis Spread On Variable Rate							5.25%
Secured Debt | Term Loan due 2025
Reorganizations [Line Items]
Proposed Debt Instrument Basis Spread On Variable Rate					5.50%
Unsecured Debt | 5.625% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							5.625%
Senior Notes | 5.75% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							5.75%
Senior Notes | 5.50% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							5.50%
Senior Notes | 10.00% Second Lien Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage						10.00%
Senior Notes | 4.75% Senior Notes
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							4.75%
Debentures | 9.50% Debenture
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							9.50%
Debentures | 8.00% Debenture
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Stated Percentage							8.00%
Term Loans due Sept 2024 and Feb 2025
Reorganizations [Line Items]
Debt Instrument, Interest Rate, Increase (Decrease)		250.00%	250.00%