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Commitments (Tables) | 12 Months Ended
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Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract] |
Electricity Purchase Contract Commitment | The following table shows the future minimum commitments for continuing operations under these contracts as of December 31, 2020 for 2021 through 2025 and thereafter as well as actual purchases under these contracts for the years ended December 31, 2020, 2019, and 2018 (in millions):
Actual purchases during the year ended December 31, | Electricity Purchase Contracts |  | Fuel Purchase Contracts |  | Other Purchase Contracts
2018 | $ | 827 |  |  | $ | 1,838 |  |  | $ | 1,671 |
2019 | 1,597 |  |  | 1,824 |  |  | 1,684 |
2020 | 756 |  |  | 1,573 |  |  | 1,506 |
Future commitments for the year ending December 31, |  |  |  |  |
2021 | $ | 700 |  |  | $ | 1,370 |  |  | $ | 1,904 |
2022 | 500 |  |  | 815 |  |  | 636 |
2023 | 447 |  |  | 609 |  |  | 605 |
2024 | 434 |  |  | 495 |  |  | 570 |
2025 | 434 |  |  | 457 |  |  | 526 |
Thereafter | 5,037 |  |  | 1,445 |  |  | 1,816 |
Total | $ | 7,552 |  |  | $ | 5,191 |  |  | $ | 6,057 |

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- Definition Description of key provisions of an arrangement under which the entity has agreed to purchase electricity over a period of time greater than one year or the normal operating cycle, if longer, including the item for which expenditures will be made, minimum quantities, milestones, time period and committed amount + References No definition available. + Details
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- References No definition available. + Details
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