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Revenue Recognition (Tables) | 3 Months Ended
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Mar. 31, 2020
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, 2020 and 2019:
| Three months ended March 31, 2020 |  |  |  |  |  |  |  |
(In millions) | Texas |  | East |  | West/Other |  | Corporate/Eliminations |  | Total
Retail revenue: |  |  |  |  |  |  |  |  |
Mass Market | $ | 1,032 |  |  | $ | 347 |  |  | $ | — |  |  | $ | (1) |  |  | $ | 1,378 |
Business Solutions | 260 |  |  | 23 |  |  | — |  |  | — |  |  | 283 |
Total retail revenue | 1,292 |  |  | 370 |  |  | — |  |  | (1) |  |  | 1,661 |
Energy revenue(a) | 5 |  |  | 45 |  |  | 75 |  |  | (1) |  |  | 124 |
Capacity revenue(a) | — |  |  | 134 |  |  | 15 |  |  | — |  |  | 149 |
Mark-to-market for economic hedging activities(b) | — |  |  | (20) |  |  | 15 |  |  | 1 |  |  | (4) |
Other revenue(a) | 61 |  |  | 10 |  |  | 20 |  |  | (2) |  |  | 89 |
Total operating revenue | 1,358 |  |  | 539 |  |  | 125 |  |  | (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 |  |  | $ | 500 |  |  | $ | 76 |  |  | $ | (2) |  |  | $ | 1,925 |
(a) 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/Other |  | Corporate/Eliminations |  | Total
Energy revenue | $ | — |  |  | $ | 35 |  |  | $ | 19 |  |  | $ | (1) |  |  | $ | 53 |
Capacity revenue | — |  |  | 24 |  |  | — |  |  | — |  |  | 24 |
Other revenue | 7 |  |  | — |  |  | 10 |  |  | (1) |  |  | 16 |
(b) Revenue relates entirely to unrealized gains and losses on derivative instruments accounted for under ASC 815 |  |  |  |  |  |  |  |  |
| Three months ended March 31, 2019 |  |  |  |  |  |  |  |
(In millions) | Texas |  | East |  | West/Other |  | Corporate/Eliminations |  | Total
Retail revenue: |  |  |  |  |  |  |  |  |
Mass Market | $ | 995 |  |  | $ | 320 |  |  | $ | — |  |  | $ | (2) |  |  | $ | 1,313 |
Business Solutions | 258 |  |  | 18 |  |  | — |  |  | — |  |  | 276 |
Total retail revenue | 1,253 |  |  | 338 |  |  | — |  |  | (2) |  |  | 1,589 |
Energy revenue(a) | 105 |  |  | 126 |  |  | 58 |  |  | 1 |  |  | 290 |
Capacity revenue(a) | — |  |  | 144 |  |  | 12 |  |  | — |  |  | 156 |
Mark-to-market for economic hedging activities(b) | 31 |  |  | (15) |  |  | 4 |  |  | — |  |  | 20 |
Other revenue(a) | 77 |  |  | 16 |  |  | 19 |  |  | (2) |  |  | 110 |
Total operating revenue | 1,466 |  |  | 609 |  |  | 93 |  |  | (3) |  |  | 2,165 |
Less: Lease revenue | — |  |  | — |  |  | 5 |  |  | — |  |  | 5 |
Less: Realized and unrealized ASC 815 revenue | 315 |  |  | 54 |  |  | 12 |  |  | — |  |  | 381 |
Total revenue from contracts with customers | $ | 1,151 |  |  | $ | 555 |  |  | $ | 76 |  |  | $ | (3) |  |  | $ | 1,779 |
(a) 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/Other |  | Corporate/Eliminations |  | Total
Energy revenue | $ | 271 |  |  | $ | 47 |  |  | $ | 2 |  |  | $ | — |  |  | $ | 320 |
Capacity revenue | — |  |  | 18 |  |  | — |  |  | — |  |  | 18 |
Other revenue | 13 |  |  | 4 |  |  | 6 |  |  | — |  |  | 23 |
(b) 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, 2020 and December 31, 2019:
(In millions) | March 31, 2020 |  | December 31, 2019
Deferred customer acquisition costs | $ | 133 |  |  | $ | 133 |
Accounts receivable, net - Contracts with customers | 885 |  |  | 1,002 |
Accounts receivable, net - Derivative instruments | 26 |  |  | 18 |
Accounts receivable, net - Affiliate | 4 |  |  | 5 |
Total accounts receivable, net | $ | 915 |  |  | $ | 1,025 |
Unbilled revenues (included within Accounts receivable, net - Contracts with customers) | $ | 328 |  |  | $ | 402 |
Deferred revenues(a) | 87 |  |  | 82 |
(a) Deferred revenues from contracts with customers for the three months ended March 31, 2020 and the year ended December 31, 2019 were approximately $27 million and $24 million, respectively The revenue recognized from contracts with customers during both the three months ended March 31, 2020 and 2019 relating to the deferred revenue balance at the beginning of each period was $13 million. The change in deferred revenue balances during the three months ended March 31, 2020 and 2019 was primarily due to the timing difference of when consideration was received and when the performance obligation was transferred.

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- Definition Tabular disclosure of contract balances and changes in contract balances. + 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=118956577&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=118956577&loc=SL49130545-203045 + Details
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