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Investments in Unconsolidated Affiliates (Tables) | 12 Months Ended
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Dec. 31, 2021
Investments In Unconsolidated Affiliates [Line Items] |
Investments in Equity Method Unconsolidated Affiliates | The following table presents Duke Energy’s investments in unconsolidated affiliates accounted for under the equity method, as well as the respective equity in earnings, by segment, for periods presented in this filing.
| Years Ended December 31,
| 2021 |  | 2020 |  |  |  | 2019
|  |  | Equity in |  |  |  | Equity in |  |  |  | Equity in
|  |  | earnings |  |  |  | earnings |  |  |  | earnings
(in millions) | Investments |  | (losses) |  | Investments |  | (losses) |  |  |  | (losses)
Electric Utilities and Infrastructure | $ | 104 |  |  | $ | 7 |  |  | $ | 105 |  |  | $ | (1) |  |  |  |  | $ | 9 |
Gas Utilities and Infrastructure | 231 |  |  | 8 |  |  | 215 |  |  | (2,017) |  |  |  |  | 114 |
Commercial Renewables | 513 |  |  | (34) |  |  | 534 |  |  | — |  |  |  |  | (4) |
Other | 122 |  |  | 47 |  |  | 107 |  |  | 13 |  |  |  |  | 43 |
Total | $ | 970 |  |  | $ | 28 |  |  | $ | 961 |  |  | $ | (2,005) |  |  |  |  | $ | 162 |
ACP |
Investments In Unconsolidated Affiliates [Line Items] |
Investments in Equity Method Unconsolidated Affiliates | For the year ended December 31, 2020, Duke Energy's investment in ACP met the requirements of S-X Rule 4-08(g) to provide summarized financial information. The following table provides summary information for ACP as required under S-X Rule 1-02(bb) for the period of significance and comparative prior year periods in Duke Energy's consolidated balance sheets and consolidated statements of operations. For the year ended December 31, 2021, there were no investments that met the significance requirements.
(in millions) |  |  |  |  | December 31, 2020
Current assets |  |  |  |  | $ | 43 |
Noncurrent assets |  |  |  |  | 93 |
Current liabilities |  |  |  |  | 1,965 |
Noncurrent liabilities |  |  |  |  | 167 |
Membership interests |  |  |  |  | (1,996) |
|  |  | Years Ended December 31,
|  |  | 2020 |  | 2019
Net revenues |  |  | $ | — |  |  | $ | — |
Operating loss |  |  | (4,612) |  |  | (5) |
Net (loss) income |  |  | (4,512) |  |  | 246 |
Net (loss) income attributable to Duke Energy |  |  | $ | (2,121) |  |  | $ | 116 |

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