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Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue from Contracts with Customer | Disaggregated Revenues The following tables represent the Company’s disaggregation of revenue from contracts with customers for the three months ended March 31, 2021 and 2020:
| Three months ended March 31, 2021
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate/Eliminations |  | Total
Retail revenue: |  |  |  |  |  |  |  |  |
Home(a) | $ | 1,542 |  |  | $ | 702 |  |  | $ | 474 |  |  | $ | — |  |  | $ | 2,718 |
Business | 572 |  |  | 2,841 |  |  | 31 |  |  | — |  |  | 3,444 |
Total retail revenue | 2,114 |  |  | 3,543 |  |  | 505 |  |  | — |  |  | 6,162 |
Energy revenue(c) | 285 |  |  | 126 |  |  | 70 |  |  | 1 |  |  | 482 |
Capacity revenue(c) | — |  |  | 141 |  |  | 14 |  |  | — |  |  | 155 |
Mark-to-market for economic hedging activities(d) | (1) |  |  | (4) |  |  | (28) |  |  | 1 |  |  | (32) |
Other revenue(b)(c) | 1,304 |  |  | 19 |  |  | 4 |  |  | (3) |  |  | 1,324 |
Total operating revenue | 3,702 |  |  | 3,825 |  |  | 565 |  |  | (1) |  |  | 8,091 |
Less: Lease revenue | — |  |  | — |  |  | 2 |  |  | — |  |  | 2 |
Less: Realized and unrealized ASC 815 revenue | 93 |  |  | 99 |  |  | (34) |  |  | 2 |  |  | 160 |
Total revenue from contracts with customers | $ | 3,609 |  |  | $ | 3,726 |  |  | $ | 597 |  |  | $ | (3) |  |  | $ | 7,929 |
(a) Home includes Services
(b) Other Revenue in Texas includes ancillary revenues of $1.2 billion driven by high pricing during Winter Storm Uri
(c) The following table represents the realized revenues related to derivative instruments that are accounted for under ASC 815 and included in the amounts above:
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate/Eliminations |  | Total
Energy revenue | $ | — |  |  | $ | 60 |  |  | $ | (4) |  |  | $ | 2 |  |  | $ | 58 |
Capacity revenue | — |  |  | 37 |  |  | — |  |  | — |  |  | 37 |
Other revenue | 94 |  |  | 6 |  |  | (2) |  |  | (1) |  |  | 97 |
(d) Revenue relates entirely to unrealized gains and losses on derivative instruments accounted for under ASC 815
| Three months ended March 31, 2020
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate/Eliminations |  | Total
Retail revenue: |  |  |  |  |  |  |  |  |
Home(a) | $ | 1,032 |  |  | $ | 329 |  |  | $ | 18 |  |  | $ | (1) |  |  | $ | 1,378 |
Business | 260 |  |  | 23 |  |  | — |  |  | — |  |  | 283 |
Total retail revenue | 1,292 |  |  | 352 |  |  | 18 |  |  | (1) |  |  | 1,661 |
Energy revenue(b) | 5 |  |  | 45 |  |  | 75 |  |  | (1) |  |  | 124 |
Capacity revenue(b) | — |  |  | 134 |  |  | 15 |  |  | — |  |  | 149 |
Mark-to-market for economic hedging activities(c) | — |  |  | (20) |  |  | 15 |  |  | 1 |  |  | (4) |
Other revenue(b) | 61 |  |  | 10 |  |  | 20 |  |  | (2) |  |  | 89 |
Total operating revenue | 1,358 |  |  | 521 |  |  | 143 |  |  | (3) |  |  | 2,019 |
Less: Lease revenue | — |  |  | — |  |  | 5 |  |  | — |  |  | 5 |
Less: Realized and unrealized ASC 815 revenue | 7 |  |  | 39 |  |  | 44 |  |  | (1) |  |  | 89 |
Total revenue from contracts with customers | $ | 1,351 |  |  | $ | 482 |  |  | $ | 94 |  |  | $ | (2) |  |  | $ | 1,925 |
(a) Home includes Services
(b) The following table represents the realized revenues related to derivative instruments that are accounted for under ASC 815 and included in the amounts above:
(In millions) | Texas |  | East |  | West/Services/Other |  | Corporate/Eliminations |  | Total
Energy revenue | $ | — |  |  | $ | 35 |  |  | $ | 19 |  |  | $ | (1) |  |  | $ | 53 |
Capacity revenue | — |  |  | 24 |  |  | — |  |  | — |  |  | 24 |
Other revenue | 7 |  |  | — |  |  | 10 |  |  | (1) |  |  | 16 |
(c) Revenue relates entirely to unrealized gains and losses on derivative instruments accounted for under ASC 815
Contract Asset and Liabilities | The following table reflects the contract assets and liabilities included in the Company’s balance sheet as of March 31, 2021 and December 31, 2020:
(In millions) | March 31, 2021 |  | December 31, 2020
Deferred customer acquisition costs | $ | 116 |  |  | $ | 113 |
Accounts receivable, net - Contracts with customers | 2,920 |  |  | 866 |
Accounts receivable, net - Derivative instruments | 113 |  |  | 33 |
Accounts receivable, net - Affiliate | 4 |  |  | 5 |
Total accounts receivable, net | $ | 3,037 |  |  | $ | 904 |
Unbilled revenues (included within Accounts receivable, net - Contracts with customers) | $ | 1,234 |  |  | $ | 393 |
Deferred revenues(a) | 258 |  |  | 60 |
(a) Deferred revenues from contracts with customers for the three months ended March 31, 2021 and the year ended December 31, 2020 were approximately $232 million and $31 million, respectively

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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