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Revenue (Tables) | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Summary of Revenue | The following table is a summary of SCE's revenue:
| Years ended December 31,
| 2020 | 2019 | 2018
(in millions) | Earning Activities | Cost- Recovery Activities | Total Consolidated | Earning Activities | Cost- Recovery Activities | Total Consolidated | Earning Activities | Cost-Recovery Activities | Total Consolidated
Revenues from contracts with customers 1,2 | $ | 6,920 |  | $ | 5,539 |  | $ | 12,459 | $ | 6,512 |  | $ | 4,655 |  | $ | 11,167 | $ | 6,519 |  | $ | 5,611 |  | $ | 12,130
Alternative revenue programs and other operating revenue 3 | 548 | 539 | 1,087 | 166 | 973 | 1,139 | 41 | 440 | 481
Total operating revenue | $ | 7,468 |  | $ | 6,078 |  | $ | 13,546 |  | $ | 6,678 |  | $ | 5,628 |  | $ | 12,306 |  | $ | 6,560 |  | $ | 6,051 |  | $ | 12,611 |
1 In the absence of a 2018 GRC decision, SCE recognized CPUC revenue in 2018 and first quarter of 2019 based on the 2017 authorized revenue requirements adjusted mainly for the July 2017 cost of capital decision and Tax Reform. SCE recorded the impact of the 2018 GRC final decision in the second quarter of 2019, including a $289 million reduction in revenue related to 2018. These revenue adjustments are included in "Revenues from contracts with customers." See "Note 1. Summary of Significant Accounting Policies—Revenue Recognition—Regulatory Proceedings—2018 General Rate Case" for further information. 2 At December 31, 2020 and 2019, SCE's receivables related to contracts from customers were $1.5 billion and $1.1 billion, which included accrued unbilled revenue of $521 million and $488 million, respectively. 3 Includes differences between amounts billed and authorized levels for both the CPUC and FERC.

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