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Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2025 | Dec. 31, 2024
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | $ 254 | $ 284
Lease obligations | 452 | 430
Pension, post-retirement and other employee benefits | 20 | 89
Progress Energy merger purchase accounting adjustments | 210 | 227
Tax credits and NOL carryforwards | 3,259 | 3,845
Other | 36 | 35
Valuation allowance | (130) | (517)
Total deferred income tax assets | 4,101 | 4,393
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (2,452) | (2,114)
Accelerated depreciation rates | (12,629) | (11,942)
Regulatory assets and deferred debits, net | (1,397) | (1,761)
Total deferred income tax liabilities | (16,478) | (15,817)
Net deferred income tax liabilities | (12,377) | (11,424)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 3,259 | 3,845
Valuation allowance | 130 | 517
Net operating loss carry forward | 523 | 214
General Business Credits |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 1,908 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 1,908 |
Foreign Tax Credit |  |
Deferred Tax Assets, Gross [Abstract] |  |
Valuation allowance | (36) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Valuation allowance | 36 |
Foreign Tax Credit | Federal |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 36 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 36 |
State Carryforward And Credits | State |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 265 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 265 |
Corporate AMT Credit Cards |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 1,038 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 1,038 |
NOL Carryforwards | State |  |
Deferred Tax Assets, Gross [Abstract] |  |
Valuation allowance | (83) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Valuation allowance | 83 |
NOL Carryforwards | Foreign |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 12 |
Valuation allowance | (12) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 12 |
Valuation allowance | 12 |
Duke Energy Carolinas |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 217 | 217
Lease obligations | 86 | 88
Pension, post-retirement and other employee benefits |  | (33)
Tax credits and NOL carryforwards | 595 | 522
Other | 2 | 11
Valuation allowance | (1) |
Total deferred income tax assets | 899 | 805
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (1,545) | (1,350)
Pension post-retirement and other employee benefits | (43) |
Accelerated depreciation rates | (3,219) | (3,203)
Regulatory assets and deferred debits, net | (283) | (304)
Total deferred income tax liabilities | (5,090) | (4,857)
Net deferred income tax liabilities | (4,191) | (4,052)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 595 | 522
Valuation allowance | 1 |
Net operating loss carry forward | 47 | 2
Progress Energy |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 82 | 84
Lease obligations | 263 | 265
Pension, post-retirement and other employee benefits |  | (23)
Tax credits and NOL carryforwards | 844 | 783
Other | 4 | 5
Total deferred income tax assets | 1,193 | 1,114
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (829) | (724)
Pension post-retirement and other employee benefits | (57) |
Accelerated depreciation rates | (5,171) | (4,608)
Regulatory assets and deferred debits, net | (712) | (1,045)
Total deferred income tax liabilities | (6,769) | (6,377)
Net deferred income tax liabilities | (5,576) | (5,263)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 844 | 783
Net operating loss carry forward | 85 | 116
Duke Energy Progress |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 49 | 43
Lease obligations | 184 | 179
Pension, post-retirement and other employee benefits |  | (1)
Tax credits and NOL carryforwards | 383 | 312
Other | 3 | 3
Total deferred income tax assets | 619 | 536
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (790) | (671)
Pension post-retirement and other employee benefits | (13) |
Accelerated depreciation rates | (1,914) | (1,624)
Regulatory assets and deferred debits, net | (544) | (585)
Total deferred income tax liabilities | (3,261) | (2,880)
Net deferred income tax liabilities | (2,642) | (2,344)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 383 | 312
Net operating loss carry forward | 66 | 59
Duke Energy Florida |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 33 | 41
Lease obligations | 79 | 86
Pension, post-retirement and other employee benefits |  | (26)
Tax credits and NOL carryforwards | 452 | 449
Other | 1 | 2
Total deferred income tax assets | 565 | 552
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (54) | (69)
Pension post-retirement and other employee benefits | (48) |
Accelerated depreciation rates | (3,301) | (3,047)
Regulatory assets and deferred debits, net | (167) | (460)
Total deferred income tax liabilities | (3,570) | (3,576)
Net deferred income tax liabilities | (3,005) | (3,024)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 452 | 449
Net operating loss carry forward | 30 | 5
Duke Energy Ohio |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 23 | 17
Lease obligations | 1 | 2
Pension, post-retirement and other employee benefits | 3 | 6
Tax credits and NOL carryforwards | 84 | 70
Regulatory liabilities and deferred credits | 2 |
Other | 4 | 4
Total deferred income tax assets | 117 | 99
Deferred Tax Liabilities, Gross [Abstract] |  |
Accelerated depreciation rates | (1,414) | (1,361)
Regulatory assets and deferred debits, net | (44) | (52)
Total deferred income tax liabilities | (1,458) | (1,413)
Net deferred income tax liabilities | (1,341) | (1,314)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 84 | 70
Net operating loss carry forward | 26 | 22
Duke Energy Indiana |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 15 | 15
Lease obligations | 11 | 12
Pension, post-retirement and other employee benefits |  | 1
Tax credits and NOL carryforwards | 191 | 145
Regulatory liabilities and deferred credits | 19 | 10
Other | (1) |
Total deferred income tax assets | 235 | 183
Deferred Tax Liabilities, Gross [Abstract] |  |
Pension post-retirement and other employee benefits | (3) |
Accelerated depreciation rates | (1,701) | (1,677)
Regulatory assets and deferred debits, net | (56) |
Total deferred income tax liabilities | (1,760) | (1,677)
Net deferred income tax liabilities | (1,525) | (1,494)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 191 | 145
Net operating loss carry forward | 8 | 54
Piedmont |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 21 | 40
Lease obligations | 1 | 2
Pension, post-retirement and other employee benefits |  | (2)
Tax credits and NOL carryforwards | 58 | 57
Other | 7 | 8
Total deferred income tax assets | 87 | 105
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (68) | (48)
Pension post-retirement and other employee benefits | (6) |
Accelerated depreciation rates | (1,072) | (1,019)
Regulatory assets and deferred debits, net | (12) | (56)
Total deferred income tax liabilities | (1,158) | (1,123)
Net deferred income tax liabilities | (1,071) | (1,018)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 58 | 57
Net operating loss carry forward | $ 8 | $ 15

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