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v3.20.2

Regulatory Matters (Other Regulatory Matters) (Details) - USD ($) | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Equity in losses (earnings) of unconsolidated affiliates | $ 80,000,000 | $ (50,000,000) | $ 2,004,000,000 | $ (137,000,000) |
Income tax benefit | 105,000,000 | 188,000,000 | (74,000,000) | 424,000,000 |
Current Liabilities: Other | 2,829,000,000 |  | 2,829,000,000 |  | $ 2,367,000,000
Asset retirement obligations | 742,000,000 |  | 742,000,000 |  | 881,000,000
Duke Energy Carolinas |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Income tax benefit | 76,000,000 | 118,000,000 | 178,000,000 | 255,000,000 |
Current Liabilities: Other | 487,000,000 |  | 487,000,000 |  | 611,000,000
Asset retirement obligations | 267,000,000 |  | 267,000,000 |  | 206,000,000
Duke Energy Progress |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Income tax benefit | 11,000,000 | $ 48,000,000 | 79,000,000 | $ 125,000,000 |
Current Liabilities: Other | 389,000,000 |  | 389,000,000 |  | 478,000,000
Asset retirement obligations | 297,000,000 |  | 297,000,000 |  | 485,000,000
ACP |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Current Liabilities: Other | 935,000,000 |  | 935,000,000 |  | $ 0
ACP | ACP |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Equity in losses (earnings) of unconsolidated affiliates |  |  | 2,100,000,000 |  |
Income tax benefit |  |  | 389,000,000 |  |
Expected costs (less than) | 50,000,000 |  | 50,000,000 |  |
Current Liabilities: Other | 927,000,000 |  | 927,000,000 |  |
Other Noncurrent Liabilities | 19,000,000 |  | 19,000,000 |  |
ACP | ACP | Current liabilities |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Guarantees of outstanding debt | 860,000,000 |  | 860,000,000 |  |
Asset retirement obligations | $ 86,000,000 |  | $ 86,000,000 |  |
ACP |  |  |  |  |
Public Utilities, General Disclosures [Line Items] |  |  |  |  |
Joint owner ownership percentage | 47.00% |  | 47.00% |  |

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