Commitments and Contingencies (Narrative) (Details)	May 01, 2007 Defendent	Sep. 29, 2023 USD ($)	Aug. 24, 2023 USD ($)	Aug. 23, 2023 USD ($)	Jun. 16, 2023 USD ($)	Dec. 30, 2022 USD ($)	Sep. 09, 2022 USD ($)	Jun. 16, 2022 USD ($)	Sep. 28, 2021 USD ($)	Aug. 07, 2018 USD ($)	Mar. 04, 2016 USD ($)	Apr. 11, 2014 USD ($)
Loss Contingencies [Line Items]
Environmental liabilities		$ 35,900,000
Environmental liabilities, current		1,100,000
Environmental liabilities		34,800,000				$ 35,800,000
Debt Instrument, Face Amount						3,534,100,000
Reorganization Items. Makewhole Claim, 2025 First Lien Secnior Secured Notes				$ 14,900,000
Opioid-Related Litigation Settlement, Payment Year Two					$ 200,000,000
Opioid-Related Litigation Settlement, Final Payment			$ 250,000,000
2023 Restructuring Support Agreement, Trust Contingent Value Rights, Share Percentage of Reorganized New Company				5.00%
2023 Restructuring Support Agreement, Equity Value of Reorganized Debtors				$ 3,776,000,000
Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants | Defendent	70
Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss											$ 1,380,000,000	$ 1,700,000,000
Loss Contingency, Settlement Agreement, Amount							$ 300,000			$ 280,600
Upper 9 Miles, Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		21,000,000							$ 441,000,000
Minimum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		17,400,000
Minimum | Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss												365,000,000
Maximum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		$ 47,600,000
Maximum | Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss												$ 3,200,000,000
10.00% First Lien Senior Notes
Loss Contingencies [Line Items]
Debt Instrument, Face Amount						$ 495,000,000.0		$ 495,000,000