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Goodwill and Other Intangibles (Tables) | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill | Goodwill did not change during the year ended December 31, 2020.
(in millions) | Texas |  | East |  | West/Services/Other |  |  |  | Total
Balance as of January 1, 2021 | $ | 324 |  |  | $ | 240 |  |  | $ | 15 |  |  |  |  | $ | 579 |
Goodwill resulted from the acquisition of Direct Energy | 427 |  |  | 648 |  |  | 175 |  |  |  |  | 1,250 |
Impairment losses | — |  |  | (35) |  |  | — |  |  |  |  | (35) |
Foreign currency translation | — |  |  | — |  |  | 1 |  |  |  |  | 1 |
Balance as of December 31, 2021 | $ | 751 |  |  | $ | 853 |  |  | $ | 191 |  |  |  |  | $ | 1,795 |
Summary of the Components of Intangible Assets Subject to Amortization | The following tables summarize the components of NRG's intangible assets:
(In millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2021 | Emission Allowances |  | Customer and Supply Contracts |  |  |  | Customer Relationships |  | Marketing Partnerships |  | Trade Names |  | Other(b) |  | Total
January 1, 2021 | $ | 672 |  |  | $ | 28 |  |  |  |  | $ | 527 |  |  | $ | 285 |  |  | $ | 373 |  |  | $ | 140 |  |  | $ | 2,025 |
Purchases | 10 |  |  | — |  |  |  |  | — |  |  | — |  |  | — |  |  | 338 |  |  | 348 |
Acquisition of businesses (a) | — |  |  | 610 |  |  |  |  | 1,308 |  |  | — |  |  | 310 |  |  | 124 |  |  | 2,352 |
Usage/Sales/Retirements | (1) |  |  | — |  |  |  |  | — |  |  | — |  |  | — |  |  | (364) |  |  | (365) |
Write-off of fully amortized balances | (51) |  |  | — |  |  |  |  | (158) |  |  | — |  |  | — |  |  | (7) |  |  | (216) |
Other | 4 |  |  | — |  |  |  |  | 2 |  |  | (1) |  |  | — |  |  | (2) |  |  | 3 |
December 31, 2021 | 634 |  |  | 638 |  |  |  |  | 1,679 |  |  | 284 |  |  | 683 |  |  | 229 |  |  | 4,147 |
Less accumulated amortization | (536) |  |  | (94) |  |  |  |  | (518) |  |  | (123) |  |  | (294) |  |  | (71) |  |  | (1,636) |
Net carrying amount | $ | 98 |  |  | $ | 544 |  |  |  |  | $ | 1,161 |  |  | $ | 161 |  |  | $ | 389 |  |  | $ | 158 |  |  | $ | 2,511 |
(a)The weighted average life of total acquired amortizable intangibles from the Direct Energy acquisition was 12 years, see Note 4 — Acquisitions, Discontinued Operations and Dispositions for weighted average life of acquired amortizable intangibles for each intangible asset type (b)RECs are not subject to amortization and had a carrying value of $123 million
(In millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, 2020 | Emission Allowances |  | Customer and Supply Contracts |  |  |  | Customer Relationships |  | Marketing Partnerships |  | Trade Names |  | Other(b) |  | Total
January 1, 2020 | $ | 662 |  |  | $ | 28 |  |  |  |  | $ | 573 |  |  | $ | 285 |  |  | $ | 373 |  |  | $ | 130 |  |  | $ | 2,051 |
Purchases | 25 |  |  | — |  |  |  |  | — |  |  | — |  |  | — |  |  | 45 |  |  | 70 |
Acquisition of businesses (a) | — |  |  | — |  |  |  |  | 22 |  |  | — |  |  | — |  |  | — |  |  | 22 |
Usage/Retirements | — |  |  | — |  |  |  |  | — |  |  | — |  |  | — |  |  | (35) |  |  | (35) |
Write-off of fully amortized balances | (4) |  |  | — |  |  |  |  | (70) |  |  | — |  |  | — |  |  | — |  |  | (74) |
Impairment | (14) |  |  | — |  |  |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (14) |
Other | 3 |  |  | — |  |  |  |  | 2 |  |  | — |  |  | — |  |  | — |  |  | 5 |
December 31, 2020 | 672 |  |  | 28 |  |  |  |  | 527 |  |  | 285 |  |  | 373 |  |  | 140 |  |  | 2,025 |
Less accumulated amortization | (563) |  |  | (28) |  |  |  |  | (349) |  |  | (99) |  |  | (247) |  |  | (71) |  |  | (1,357) |
Net carrying amount | $ | 109 |  |  | $ | — |  |  |  |  | $ | 178 |  |  | $ | 186 |  |  | $ | 126 |  |  | $ | 69 |  |  | $ | 668 |
(a)The weighted average life of acquired intangibles was 5 years for customer relationships (b)RECs are not subject to amortization and had a carrying value of $28 million
Schedule of Amortization and Retirements of Intangible Expense | The following table presents NRG's amortization of intangible assets for each of the past three years:
| Years Ended December 31,
(In millions) | 2021 |  | 2020 |  | 2019
Emission allowances | $ | 24 |  |  | $ | 28 |  |  | $ | 32 |
Customer and supply contracts | 66 |  |  | 12 |  |  | 14 |
Customer relationships | 327 |  |  | 74 |  |  | 44 |
Marketing partnerships | 24 |  |  | 24 |  |  | 15 |
Trade names | 47 |  |  | 27 |  |  | 25 |
Other(a) | 7 |  |  | 3 |  |  | 4 |
Total amortization | $ | 495 |  |  | $ | 168 |  |  | $ | 134 |
(a)For the years ended December 31, 2021, 2020 and 2019, other intangibles were amortized to depreciation and amortization expense for $3 million, $3 million and $4 million, respectively
Schedule of Estimated Amortization of Intangible Assets for Next Five Years | The following table presents estimated amortization of NRG's intangible assets as of December 31, 2021 for each of the next five years:
(In millions) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Year Ended December 31, | Emission Allowances |  |  |  | Customer and Supply Contracts |  | Customer Relationships |  | Marketing Partnerships |  | Trade Names |  | Other |  | Total
2022 | $ | 14 |  |  |  |  | $ | 143 |  |  | $ | 265 |  |  | $ | 23 |  |  | $ | 47 |  |  | $ | 3 |  |  | $ | 495 |
2023 | 12 |  |  |  |  | 120 |  |  | 216 |  |  | 23 |  |  | 46 |  |  | 4 |  |  | 421 |
2024 | 12 |  |  |  |  | 73 |  |  | 148 |  |  | 23 |  |  | 38 |  |  | 3 |  |  | 297 |
2025 | 11 |  |  |  |  | 50 |  |  | 110 |  |  | 22 |  |  | 32 |  |  | 4 |  |  | 229 |
2026 | 9 |  |  |  |  | 52 |  |  | 95 |  |  | 22 |  |  | 24 |  |  | 4 |  |  | 206 |

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