Commitments and Contingencies (Narrative) (Details)	May 01, 2007 Defendent	Jun. 28, 2024 USD ($)	Dec. 29, 2023 USD ($)	Nov. 21, 2023 USD ($)	Nov. 14, 2023 USD ($)	Sep. 09, 2022 USD ($)	Sep. 28, 2021 USD ($)	Aug. 07, 2018 USD ($)	Mar. 04, 2016 USD ($)	Apr. 11, 2014 USD ($)
Loss Contingencies [Line Items]
Environmental liabilities		$ 35,200,000
Environmental liabilities, current		600,000
Environmental liabilities		34,600,000	$ 35,100,000
Debt Instrument, Face Amount		1,643,500,000	$ 1,647,800,000
Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Number of Defendants | Defendent	70
StrataGraft
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		20,000,000
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		$ 300,000
Upper 9 Miles, Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		21,100,000					$ 441,000,000
Legal contingency, cost reopener				$ 3,700,000,000
Minimum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss		16,700,000
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		$ 51,100,000
Maximum | Lower Passaic River, New Jersey
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss										$ 3,200,000,000
Fourteen Point Seven Five Percent Second-Out Takeback Notes
Loss Contingencies [Line Items]
Debt Instrument, Face Amount					$ 778,600,000
Debt Instrument, Interest Rate, Stated Percentage		14.75%