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Fair Value Measurements - Commodity and Foreign Currency Contracts (Details) - USD ($)
$ in Millions
Sep. 30, 2024
Dec. 31, 2023
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset $ 632.2 $ 840.7
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 350.7 418.0
Derivative Asset, Total 281.5 422.7
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 19.1 45.2
Derivative Asset, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 262.4 377.5
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 544.9 697.8
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 350.7 418.0
Derivative Liability, Total 194.2 279.7
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 59.7 100.5
Derivative Liability, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 134.5 179.2
Commodity Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 611.6 791.8
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 335.9 399.0
Derivative Asset, Total 275.7 392.8
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 19.1 45.2
Derivative Asset, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 256.6 347.7
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 519.6 669.1
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 335.9 399.0
Derivative Liability, Total 183.8 270.1
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 59.7 100.5
Derivative Liability, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 124.1 169.7
Interest Rate Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 5.8 14.8
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 0.0 0.0
Derivative Asset, Total 5.8 14.8
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 0.0 0.0
Derivative Asset, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 5.8 14.8
Foreign Exchange Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 14.8 34.1
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 14.8 19.1
Derivative Asset, Total 0.0 15.0
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 0.0 0.0
Derivative Asset, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Asset, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election 0.0 15.0
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 25.3 28.7
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 14.8 19.1
Derivative Liability, Total 10.4 9.6
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 0.0 0.0
Derivative Liability, Not Subject to Master Netting Arrangement Deduction 0.0 0.0
Derivative Liability, Fair Value, Offset Against Collateral, Net of Not Subject to Master Netting Arrangement, Policy Election $ 10.4 $ 9.6