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Income Taxes (Effective Tax Rates) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 1,090 | $ 1,001 | $ 856
State income tax, net of federal income tax effect | 88 | 43 | (17)
Amortization of EDIT | (436) | (388) | (481)
AFUDC equity income | (48) | (41) | (41)
AFUDC equity depreciation | 38 | 37 | 36
Production tax credits | (46) |  |
Other tax credits | (43) | (63) | (43)
Valuation allowance |  | (114) |
Other items, net | (53) | (37) | (10)
Income tax expense from continuing operations | $ 590 | $ 438 | $ 300
Effective tax rate (as a percent) | 11.40% | 9.20% | 7.40%
Domestic Tax Jurisdiction |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Favorable adjustment amounts |  | $ 114 |
State |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Favorable adjustment amounts |  | 6 |
Duke Energy Carolinas |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 443 | 338 | $ 362
State income tax, net of federal income tax effect | 40 | 12 | (23)
Amortization of EDIT | (225) | (197) | (195)
AFUDC equity income | (24) | (19) | (20)
AFUDC equity depreciation | 19 | 18 | 18
Other tax credits | (23) | (11) | (12)
Other items, net | (4) |  | (4)
Income tax expense from continuing operations | $ 226 | $ 141 | $ 126
Effective tax rate (as a percent) | 10.70% | 8.80% | 7.30%
Progress Energy |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 545 | $ 490 | $ 457
State income tax, net of federal income tax effect | 73 | 60 | 44
Amortization of EDIT | (121) | (114) | (133)
AFUDC equity income | (16) | (14) | (14)
AFUDC equity depreciation | 14 | 13 | 12
Production tax credits | (46) |  |
Other tax credits | (16) | (46) | (16)
Other items, net | (7) | (12) | (2)
Income tax expense from continuing operations | $ 426 | $ 377 | $ 348
Effective tax rate (as a percent) | 16.40% | 16.20% | 16.00%
Duke Energy Progress |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 284 | $ 241 | $ 245
State income tax, net of federal income tax effect | 27 | 18 | 6
Amortization of EDIT | (98) | (91) | (74)
AFUDC equity income | (13) | (11) | (11)
AFUDC equity depreciation | 7 | 6 | 6
Other tax credits | (12) | (7) | (9)
Other items, net | (6) | (7) | (5)
Income tax expense from continuing operations | $ 189 | $ 149 | $ 158
Effective tax rate (as a percent) | 14.00% | 13.00% | 13.60%
Duke Energy Florida |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 279 | $ 268 | $ 238
State income tax, net of federal income tax effect | 58 | 56 | 48
Amortization of EDIT | (23) | (23) | (59)
AFUDC equity income | (3) | (3) | (3)
AFUDC equity depreciation | 7 | 7 | 6
Production tax credits | (46) |  |
Other tax credits | (4) | (39) | (7)
Other items, net |  | (5) | 2
Income tax expense from continuing operations | $ 268 | $ 261 | $ 225
Effective tax rate (as a percent) | 20.20% | 20.40% | 19.80%
Duke Energy Ohio |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 85 | $ 83 | $ 59
State income tax, net of federal income tax effect | 3 | (2) | 3
Amortization of EDIT | (23) | (22) | (79)
AFUDC equity income | (1) | (2) | (1)
AFUDC equity depreciation | 2 | 2 | 1
Other tax credits | (1) | (2) | (2)
Other items, net | (1) | 6 | (2)
Income tax expense from continuing operations | $ 64 | $ 63 | $ (21)
Effective tax rate (as a percent) | 15.80% | 15.90% | (7.50%)
Duke Energy Indiana |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 108 | $ 128 | $ 24
State income tax, net of federal income tax effect | 16 | 18 | 2
Amortization of EDIT | (49) | (33) | (48)
AFUDC equity income | (3) | (2) | (2)
AFUDC equity depreciation | 4 | 4 | 4
Other tax credits | (2) | (2) | (3)
Other items, net | (3) | (3) | (1)
Income tax expense from continuing operations | $ 71 | $ 110 | $ (24)
Effective tax rate (as a percent) | 13.90% | 18.10% | (21.20%)
Piedmont |  |  |
Reconciliation of Income Tax Expense at the U.S. Federal Statutory Tax Rate to the Actual Tax Expense from Continuing Operations [Abstract] |  |  |
Income tax expense, computed at the statutory rate of 21% | $ 107 | $ 97 | $ 76
State income tax, net of federal income tax effect | 12 | 12 | (4)
Amortization of EDIT | (18) | (20) | (23)
AFUDC equity income | (4) | (4) | (2)
Other tax credits | (2) | (1) | (8)
Income tax expense from continuing operations | $ 95 | $ 84 | $ 39
Effective tax rate (as a percent) | 18.70% | 18.10% | 10.80%

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