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Derivative Instruments - Effect on Income (Details) - USD ($)
 3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2020
Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]          
Carrying Amount of Hedged Assets/(Liabilities) $ 51,400,000   $ 51,400,000   $ 44,500,000
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset/(Liabilities) 9,300,000   9,300,000   4,900,000
Gain (loss) on derivative          
Revenue 7,085,500,000 $ 3,158,300,000 13,043,400,000 $ 11,173,500,000  
Cost of revenue 6,901,600,000 2,944,500,000 12,667,900,000 10,700,900,000  
Derivative, Credit Risk Related Contingent Features [Abstract]          
Net derivative liability positions with credit contingent features 4,000,000.0   4,000,000.0   20,000,000.0
Collateral posted and held by our counterparties 0   0   0
Maximum additional potential collateral requirements 4,000,000.0   4,000,000.0   $ 20,000,000.0
Revenue          
Gain (loss) on derivative          
Revenue 7,085,500,000 3,158,300,000 13,043,400,000 11,173,500,000  
Gains (losses) on fair value hedge relationships:          
Total amount of income and expense line items excluding the impact of hedges, Revenue 7,088,400,000 3,131,400,000 13,058,000,000.0 11,132,500,000  
Cost of revenue          
Gain (loss) on derivative          
Cost of revenue 6,901,600,000 2,944,500,000 12,667,900,000 10,700,900,000  
Gains (losses) on fair value hedge relationships:          
Total amount of income and expense line items excluding the impact of hedges, Cost of Revenue 6,972,200,000 2,892,600,000 12,763,200,000 10,643,100,000  
Interest expense and other financing costs, net          
Gain (loss) on derivative          
Interest expense and other financing costs, net 11,400,000 10,700,000 22,500,000 26,900,000  
Gains (losses) on fair value hedge relationships:          
Total amount of income and expense line items excluding the impact of hedges, Interest expense and other financing costs 11,100,000 10,700,000 22,000,000.0 26,900,000  
Commodity contracts | Revenue          
Gains (losses) on fair value hedge relationships:          
Hedged item 0 0 0 0  
Derivatives designated as hedging instruments 0 0 0 0  
Amount of gain (loss) reclassified from accumulated other comprehensive income into income (2,900,000) 27,000,000.0 (14,600,000) 41,000,000.0  
Commodity contracts | Cost of revenue          
Gains (losses) on fair value hedge relationships:          
Hedged item 14,600,000 8,900,000 26,500,000 (14,300,000)  
Derivatives designated as hedging instruments (11,300,000) (4,600,000) (19,700,000) 13,800,000  
Amount of gain (loss) reclassified from accumulated other comprehensive income into income 67,400,000 (56,200,000) 88,400,000 (57,300,000)  
Commodity contracts | Interest expense and other financing costs, net          
Gains (losses) on fair value hedge relationships:          
Hedged item 0 0 0 0  
Derivatives designated as hedging instruments 0 0 0 0  
Amount of gain (loss) reclassified from accumulated other comprehensive income into income 0 0 0 0  
Interest rate contracts | Revenue          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) reclassified from accumulated other comprehensive income into income 0 0 0 0  
Interest rate contracts | Cost of revenue          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) reclassified from accumulated other comprehensive income into income 0 0 0 0  
Interest rate contracts | Interest expense and other financing costs, net          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) reclassified from accumulated other comprehensive income into income (300,000) 0 (500,000) 0  
Derivatives designated as hedging instruments          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) recognized in accumulated other comprehensive income 55,700,000 (50,300,000) 81,200,000 (15,500,000)  
Amount of gain (loss) reclassified from accumulated other comprehensive income into Income 64,200,000 (29,200,000) 73,400,000 (16,300,000)  
Derivatives designated as hedging instruments | Commodity contracts | Revenue          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) recognized in accumulated other comprehensive income (13,300,000) (148,500,000) (76,100,000) 185,600,000  
Amount of gain (loss) reclassified from accumulated other comprehensive income into Income (2,900,000) 27,000,000.0 (14,600,000) 41,000,000.0  
Gain (loss) not recorded in accumulated other comprehensive income due to intra-period settlement (113,800,000) 140,900,000 (190,600,000) 303,300,000  
Derivatives designated as hedging instruments | Commodity contracts | Cost of revenue          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) recognized in accumulated other comprehensive income 69,600,000 100,300,000 154,300,000 (197,400,000)  
Amount of gain (loss) reclassified from accumulated other comprehensive income into Income 67,400,000 (56,200,000) 88,400,000 (57,300,000)  
Gain (loss) not recorded in accumulated other comprehensive income due to intra-period settlement 8,000,000.0 (83,400,000) 15,200,000 (173,500,000)  
Derivatives designated as hedging instruments | Interest rate contracts | Interest expense and other financing costs, net          
Gains (losses) on fair value hedge relationships:          
Amount of gain (loss) recognized in accumulated other comprehensive income (700,000) (2,200,000) 3,000,000.0 (3,700,000)  
Amount of gain (loss) reclassified from accumulated other comprehensive income into Income (300,000) 0 (500,000) 0  
Derivatives not designated as hedging instruments          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated 5,000,000.0 200,000 17,900,000 113,600,000  
Derivatives not designated as hedging instruments | Commodity contracts          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated 6,700,000 8,400,000 15,900,000 102,900,000  
Derivatives not designated as hedging instruments | Commodity contracts | Revenue          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated 12,900,000 34,100,000 (290,900,000) 113,300,000  
Derivatives not designated as hedging instruments | Commodity contracts | Cost of revenue          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated (6,200,000) (25,800,000) 306,800,000 (10,300,000)  
Derivatives not designated as hedging instruments | Foreign currency contracts          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated (1,700,000) (8,300,000) 2,000,000.0 10,700,000  
Derivatives not designated as hedging instruments | Foreign currency contracts | Revenue          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated (200,000) (500,000) 100,000 0  
Derivatives not designated as hedging instruments | Foreign currency contracts | Interest expense and other financing costs, net          
Gains (losses) on fair value hedge relationships:          
Derivative Instruments - Non-designated $ (1,500,000) $ (7,800,000) $ 1,800,000 $ 10,700,000