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Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Current income taxes |  |  |
Federal(b) | $ 71 | $ 1 | $ (2)
State | 1 | (8) | 1
Foreign | 3 | 4 | 2
Total current income taxes | 75 | (3) | 1
Deferred income taxes |  |  |
Federal | 319 | 328 | 275
State | 53 | (14) |
Total deferred income taxes | 372 | 314 | 275
ITC amortization | (9) | (11) | (8)
Income tax expense from continuing operations | 438 | 300 | 268
Tax benefit from discontinued operations | (359) | (503) | (76)
Total income tax expense included in Consolidated Statements of Operations | 79 | (203) | 192
Net operating loss carry forward | 214 | 550 | 250
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Domestic | 4,700 | 3,991 | 3,947
Foreign | 67 | 87 | 44
Income from continuing operations before income taxes | 4,767 | 4,078 | 3,991
Alternative minimum tax | 69 |  |
Duke Energy Carolinas |  |  |
Current income taxes |  |  |
Federal(b) | 173 | (71) | 241
State | 22 | (13) | 23
Total current income taxes | 195 | (84) | 264
Deferred income taxes |  |  |
Federal | (43) | 230 | (130)
State | (7) | (16) | (79)
Total deferred income taxes | (50) | 214 | (209)
ITC amortization | (4) | (4) | (4)
Income tax expense from continuing operations | 141 | 126 | 51
Total income tax expense included in Consolidated Statements of Operations | 141 | 126 | 51
Net operating loss carry forward | 2 | 97 | 32
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,611 | 1,726 | 1,387
Progress Energy |  |  |
Current income taxes |  |  |
Federal(b) | 459 | (13) | (15)
State | 38 | (3) | (4)
Total current income taxes | 497 | (16) | (19)
Deferred income taxes |  |  |
Federal | (154) | 310 | 203
State | 38 | 59 | 47
Total deferred income taxes | (116) | 369 | 250
ITC amortization | (4) | (5) | (4)
Income tax expense from continuing operations | 377 | 348 | 227
Total income tax expense included in Consolidated Statements of Operations | 377 | 348 | 227
Net operating loss carry forward | 116 | 128 | 95
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 2,333 | 2,176 | 1,826
Duke Energy Progress |  |  |
Current income taxes |  |  |
Federal(b) | 198 | 37 | 113
State | 4 |  | 8
Total current income taxes | 202 | 37 | 121
Deferred income taxes |  |  |
Federal | (69) | 118 | (16)
State | 19 | 7 | (26)
Total deferred income taxes | (50) | 125 | (42)
ITC amortization | (3) | (4) | (4)
Income tax expense from continuing operations | 149 | 158 | 75
Total income tax expense included in Consolidated Statements of Operations | 149 | 158 | 75
Net operating loss carry forward | 59 | 9 | 14
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,147 | 1,166 | 1,066
Duke Energy Florida |  |  |
Current income taxes |  |  |
Federal(b) | 279 | (37) | (75)
State | 71 | (23) | (17)
Total current income taxes | 350 | (60) | (92)
Deferred income taxes |  |  |
Federal | (89) | 201 | 202
State |  | 84 | 77
Total deferred income taxes | (89) | 285 | 279
Income tax expense from continuing operations | 261 | 225 | 187
Total income tax expense included in Consolidated Statements of Operations | 261 | 225 | 187
Net operating loss carry forward | 5 | 111 | 64
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,277 | 1,134 | 925
Proceeds from sale of PTCs | 28 |  |
Duke Energy Ohio |  |  |
Current income taxes |  |  |
Federal(b) | (46) | (2) | (8)
State | (3) | 1 | (2)
Total current income taxes | (49) | (1) | (10)
Deferred income taxes |  |  |
Federal | 111 | (22) | 35
State | 1 | 3 | 5
Total deferred income taxes | 112 | (19) | 40
ITC amortization |  | (1) |
Income tax expense from continuing operations | 63 | (21) | 30
Total income tax expense included in Consolidated Statements of Operations | 63 | (21) | 30
Net operating loss carry forward | 22 | 7 | 2
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 397 | 281 | 234
Duke Energy Indiana |  |  |
Current income taxes |  |  |
Federal(b) | 10 | 38 | 65
State | 9 | 2 | 7
Total current income taxes | 19 | 40 | 72
Deferred income taxes |  |  |
Federal | 77 | (63) | 19
State | 14 |  | 16
Total deferred income taxes | 91 | (63) | 35
ITC amortization |  | (1) |
Income tax expense from continuing operations | 110 | (24) | 107
Total income tax expense included in Consolidated Statements of Operations | 110 | (24) | 107
Net operating loss carry forward | 54 | 13 | 8
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 607 | 113 | 588
Piedmont |  |  |
Current income taxes |  |  |
Federal(b) | 44 | 32 | 23
State | 3 | 2 | 3
Total current income taxes | 47 | 34 | 26
Deferred income taxes |  |  |
Federal | 25 | 12 | 17
State | 12 | (7) | (13)
Total deferred income taxes | 37 | 5 | 4
Income tax expense from continuing operations | 84 | 39 | 30
Total income tax expense included in Consolidated Statements of Operations | 84 | 39 | 30
Net operating loss carry forward | 15 | 12 | 3
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | $ 463 | $ 362 | $ 340

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