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Fair Value Measurements - Commodity and Foreign Currency Contracts (Details) - USD ($)
$ in Millions
Jun. 30, 2024
Dec. 31, 2023
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset $ 631.4 $ 840.7
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 343.1 418.0
Derivative Asset, Total 288.3 422.7
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 19.8 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 268.5 377.5
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 551.4 697.8
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 343.1 418.0
Derivative Liability, Total 208.3 279.7
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 61.6 100.5
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 146.7 179.2
Commodity Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 605.7 791.8
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 329.8 399.0
Derivative Asset, Total 275.9 392.8
Derivative Asset, Subject to Master Netting Arrangement, Collateral, Obligation to Return Cash Not Offset 19.8 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 256.0 347.7
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 532.7 669.1
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 329.8 399.0
Derivative Liability, Total 202.9 270.1
Derivative Liability, Subject to Master Netting Arrangement, Collateral, Right to Reclaim Cash Not Offset 61.6 100.5
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 141.4 169.7
Interest Rate Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 10.5 14.8
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 0.0 0.0
Derivative Asset, Total 10.5 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 10.5 14.8
Foreign Exchange Contract [Member]    
Offsetting Assets [Line Items]    
Derivative Asset, Subject to Master Netting Arrangement, before Offset 15.3 34.1
Derivative Asset, Subject to Master Netting Arrangement, Liability Offset 13.3 19.1
Derivative Asset, Total 2.0 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 2.0 15.0
Offsetting Liabilities [Line Items]    
Gross Derivative Liabilities 18.6 28.7
Derivative Liability, Subject to Master Netting Arrangement, Asset Offset 13.3 19.1
Derivative Liability, Total 5.3 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 $ 5.3 $ 9.6