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Variable Interest Entities (Schedule of Non-Consolidated VIEs) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | --- | ---
Variable Interest Entity [Line Items] |  |  |
Investments in equity method unconsolidated affiliates | $ 970 | $ 961 |
Other noncurrent assets | 3,812 | 3,601 |
Total Assets | 169,587 | 162,388 | $ 158,838
Other current liabilities | 2,471 | 2,936 |
Other Noncurrent Liabilities: Other | 1,650 | 1,719 |
Non-consolidated VIEs |  |  |
Variable Interest Entity [Line Items] |  |  |
Investments in equity method unconsolidated affiliates | 523 | 530 |
Other noncurrent assets | 61 | 31 |
Total Assets | 584 | 561 |
Other current liabilities | 51 | 933 |
Other Noncurrent Liabilities: Other | 57 | 18 |
Total liabilities | 108 | 951 |
Net (liabilities) assets | 476 | (390) |
Duke Energy Ohio |  |  |
Variable Interest Entity [Line Items] |  |  |
Receivables from affiliated companies | 122 | 102 |
Other noncurrent assets | 84 | 72 |
Total Assets | 10,774 | 10,025 | $ 9,338
Other current liabilities | 82 | 70 |
Other Noncurrent Liabilities: Other | 101 | 99 |
Duke Energy Ohio | Non-consolidated VIEs |  |  |
Variable Interest Entity [Line Items] |  |  |
Receivables from affiliated companies | 79 | 83 |
Total Assets | 79 | 83 |
Net (liabilities) assets | 79 | 83 |
Duke Energy Indiana |  |  |
Variable Interest Entity [Line Items] |  |  |
Receivables from affiliated companies | 98 | 112 |
Other noncurrent assets | 296 | 253 |
Total Assets | 14,488 | 14,041 |
Other current liabilities | 105 | 83 |
Other Noncurrent Liabilities: Other | 44 | 30 |
Duke Energy Indiana | Non-consolidated VIEs |  |  |
Variable Interest Entity [Line Items] |  |  |
Receivables from affiliated companies | 97 | 110 |
Total Assets | 97 | 110 |
Net (liabilities) assets | 97 | 110 |
Pipeline Investments | Non-consolidated VIEs |  |  |
Variable Interest Entity [Line Items] |  |  |
Investments in equity method unconsolidated affiliates | 15 |  |
Other noncurrent assets | 61 | 31 |
Total Assets | 76 | 31 |
Other current liabilities | 47 | 928 |
Other Noncurrent Liabilities: Other | 54 | 8 |
Total liabilities | 101 | 936 |
Net (liabilities) assets | (25) | (905) |
Commercial Renewables | Non-consolidated VIEs |  |  |
Variable Interest Entity [Line Items] |  |  |
Investments in equity method unconsolidated affiliates | 508 | 530 |
Total Assets | 508 | 530 |
Other current liabilities | 4 | 5 |
Other Noncurrent Liabilities: Other | 3 | 10 |
Total liabilities | 7 | 15 |
Net (liabilities) assets | $ 501 | $ 515 |

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