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Derivative Instruments - Effect on Income (Details) - USD ($) | 3 Months Ended | 12 Months Ended
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Dec. 31, 2020 | Sep. 30, 2020 | Jun. 30, 2020 | Mar. 31, 2020 | Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract] |  |  |  |  |  |  |  |  |  |  |
Carrying Amount of Hedged Asset/(Liabilities) | $ 44,500,000 |  |  |  | $ 30,700,000 |  |  |  | $ 44,500,000 | $ 30,700,000 |
Cumulative Amount of Fair Value Hedging Adjustment Included in the Carrying Amount of the Hedged Asset/(Liabilities) | 4,900,000 |  |  |  | 2,300,000 |  |  |  | 4,900,000 | 2,300,000 |
Gain (loss) on derivative |  |  |  |  |  |  |  |  |  |  |
Revenue | 4,702,100,000 | $ 4,482,700,000 | $ 3,158,300,000 | $ 8,015,200,000 | 9,358,100,000 | $ 9,322,700,000 | $ 9,459,400,000 | $ 8,678,800,000 | 20,358,300,000 | 36,819,000,000.0 | $ 39,750,300,000
Cost of revenue |  |  |  |  |  |  |  |  | 19,506,500,000 | 35,707,000,000.0 | 38,731,800,000
Potential Collateral Requirements for Derivative Liabilities with Credit-Risk-Contingent Features |  |  |  |  |  |  |  |  |  |  |
Net derivative liability positions with credit contingent features | 20,000,000.0 |  |  |  | 45,600,000 |  |  |  | 20,000,000.0 | 45,600,000 |
Collateral posted and held by our counterparties | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Maximum additional potential collateral requirements | $ 20,000,000.0 |  |  |  | $ 45,600,000 |  |  |  | 20,000,000.0 | 45,600,000 |
Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on derivative |  |  |  |  |  |  |  |  |  |  |
Revenue |  |  |  |  |  |  |  |  | 20,358,300,000 | 36,819,000,000.0 | 39,750,300,000
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Total amount of income and expense line items excluding the impact of hedges, Revenue |  |  |  |  |  |  |  |  | 20,327,000,000.0 | 36,827,500,000 | 39,773,700,000
Cost of revenue |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on derivative |  |  |  |  |  |  |  |  |  |  |
Cost of revenue |  |  |  |  |  |  |  |  | 19,506,500,000 | 35,707,000,000.0 | 38,731,800,000
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Total amount of income and expense line items excluding the impact of hedges, Cost of revenue |  |  |  |  |  |  |  |  | 19,326,600,000 | 35,745,600,000 | 38,776,100,000
Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (loss) on derivative |  |  |  |  |  |  |  |  |  |  |
Interest Expense And Other Financing Costs |  |  |  |  |  |  |  |  | 48,600,000 |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Total amount of income and expense line items excluding the impact of hedges, Interest expense and other financing costs |  |  |  |  |  |  |  |  | 48,100,000 |  |
Commodity contracts | Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Hedged Item |  |  |  |  |  |  |  |  | 0 | 0 | 0
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  | 0 | 0 | 0
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | 31,300,000 | (8,500,000) | (23,500,000)
Commodity contracts | Cost of revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Hedged Item |  |  |  |  |  |  |  |  | (8,200,000) | 18,100,000 | (1,600,000)
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  | 9,400,000 | (16,100,000) | 500,000
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | (181,100,000) | 36,600,000 | 45,500,000
Commodity contracts | Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Hedged Item |  |  |  |  |  |  |  |  | 0 |  |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  | 0 |  |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | 0 |  |
Interest rate contract | Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest rate contract | Cost of revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | 0 | 0 | 0
Interest rate contract | Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Reclassified from Accumulated OCI into Income |  |  |  |  |  |  |  |  | (500,000) |  |
Derivatives designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (150,400,000) | 2,700,000 | 41,500,000
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (150,300,000) | 28,100,000 | 20,900,000
Derivatives designated as hedging instruments | Commodity contracts | Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (20,800,000) | (157,900,000) | 130,300,000
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | 31,300,000 | (8,500,000) | (23,500,000)
Derivatives designated as hedging instruments | Commodity contracts | Cost of revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (126,400,000) | 160,600,000 | (87,800,000)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (181,100,000) | 36,600,000 | 45,500,000
Derivatives designated as hedging instruments | Foreign currency contracts | Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | 0 | 0 | (1,100,000)
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | 0 | 0 | (1,100,000)
Derivatives designated as hedging instruments | Interest rate contract | Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Gain (Loss) Recognized in Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (3,200,000) | 0 | 0
Amount of Gain (Loss) Reclassified from Accumulated Other Comprehensive Income |  |  |  |  |  |  |  |  | (500,000) | 0 | 0
Derivatives not designated as hedging instruments |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | 97,500,000 | 46,900,000 | 34,500,000
Derivatives not designated as hedging instruments | Commodity contracts |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | 114,100,000 | 47,700,000 | 27,800,000
Derivatives not designated as hedging instruments | Commodity contracts | Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | 235,200,000 | 269,500,000 | 147,600,000
Derivatives not designated as hedging instruments | Commodity contracts | Cost of revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | (121,100,000) | (221,800,000) | (119,800,000)
Derivatives not designated as hedging instruments | Foreign currency contracts |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | (16,600,000) | (700,000) | 6,700,000
Derivatives not designated as hedging instruments | Foreign currency contracts | Revenue |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | (3,200,000) | (300,000) | 1,400,000
Derivatives not designated as hedging instruments | Foreign currency contracts | Interest expense and other financing costs, net |  |  |  |  |  |  |  |  |  |  |
Gain (Loss) on fair value hedge relationships |  |  |  |  |  |  |  |  |  |  |
Amount of Realized and Unrealized Gain (Loss) |  |  |  |  |  |  |  |  | $ (13,400,000) | $ (500,000) | $ 5,300,000

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