Commitments and Contingencies (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
	Jul. 01, 2022	Jun. 16, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Liabilities subject to compromise	$ 0.0		$ 6,397.7
Environmental liabilities	38.4
Environmental liabilities	37.2		43.0
Crab Orchard National Wildlife Refuge Superfund Site
Loss Contingencies [Line Items]
Environmental liabilities		$ 57.4
Environmental Remediation Expense	11.1
Accrued and other current liabilities
Loss Contingencies [Line Items]
Environmental liabilities, current	1.2
Other Noncurrent Liabilities
Loss Contingencies [Line Items]
Interest Payable, Installment Sales			$ 12.4
Minimum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	19.7
Maximum
Loss Contingencies [Line Items]
Loss Contingency, Estimate of Possible Loss	$ 50.0