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Other Commitments And Contingencies (Narrative) (Details)
 3 Months Ended
Sep. 27, 2024
USD ($)
May 24, 2024
USD ($)
Mar. 18, 2024
USD ($)
Sep. 30, 2024
USD ($)
Rate
Dec. 31, 2023
USD ($)
Other Commitments And Contingencies [Line Items]          
Guaranty Liabilities       $ 1,150,200,000 $ 646,100,000
Recorded reserves to cover environmental remediation at various sites       $ 92,600,000 80,000,000.0
Wind Power Purchase Agreement, Purchase Percentage | Rate       100.00%  
Payments to Acquire Assets, Investing Activities $ 153,300,000 $ 114.9 $ 110,600,000    
Increase (Decrease) in Other Accrued Liabilities       $ 11,200,000  
Assets recorded for asset retirement obligations       $ 164,600,000  
MGP Sites          
Other Commitments And Contingencies [Line Items]          
Number of waste disposal sites identified by program       51  
Liability for Estimated Remediation Costs       $ 87,900,000 73,700,000
Reasonably possible remediation costs variance from reserve       16,400,000  
Standby Letters of Credit          
Other Commitments And Contingencies [Line Items]          
Long-term Line of Credit       $ 9,400,000 $ 9,900,000