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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue |
Summary of Revenue | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | 2021 | ​ | 2020 | ​ | 2019
​ | ​ | ​ | ​ | ​ | Cost- | ​ | ​ | ​ | ​ | ​ | ​ | ​ | Cost- | ​ | ​ | ​ | ​ | ​ | Cost- | ​ | ​ | ​
​ | ​ | Earning | ​ | Recovery | ​ | Total | ​ | Earning | ​ | Recovery | ​ | Total | ​ | Earning | ​ | Recovery | ​ | Total
(in millions) |  | Activities |  | Activities |  | Consolidated |  | Activities |  | Activities |  | Consolidated |  | Activities |  | Activities |  | Consolidated
Revenues from contracts with customers1,2 | ​ | $ | 7,523 | ​ | ​ | 6,824 | ​ | $ | 14,347 | ​ | $ | 6,920 |  | $ | 5,539 |  | ​ | 12,459 |  | $ | 6,512 |  | $ | 4,655 |  | $ | 11,167
Alternative revenue programs and other operating revenue3 | ​ |  | 349 | ​ |  | 178 | ​ |  | 527 | ​ |  | 548 |  | ​ | 539 |  | ​ | 1,087 |  | ​ | 166 |  | ​ | 973 |  | ​ | 1,139
Total operating revenue | ​ | $ | 7,872 | ​ | $ | 7,002 | ​ | $ | 14,874 | ​ | $ | 7,468 | ​ | $ | 6,078 | ​ | $ | 13,546 | ​ | $ | 6,678 | ​ | $ | 5,628 | ​ | $ | 12,306
1 | SCE recorded CPUC revenue based on annual revenue requirement set by a methodology established in the GRC proceeding and FERC revenue authorized through a formula rate. For further information, see Note 1.
2 | At December 31, 2021 and 2020, SCE's receivables related to contracts from customers were $2.3 billion and $1.5 billion, which included accrued unbilled revenue of $794 million and $521 million, respectively.
3 | Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

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