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Income Taxes (Components of Income Tax Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Current income taxes |  |  |
Federal | $ 1 | $ (2) | $ (281)
State | (8) | 1 | (3)
Foreign | 4 | 2 | 1
Total current income taxes | (3) | 1 | (283)
Deferred income taxes |  |  |
Federal | 328 | 275 | 222
State | (14) |  | (98)
Total deferred income taxes | 314 | 275 | 124
ITC amortization | (11) | (8) | (10)
Income tax expense from continuing operations | 300 | 268 | (169)
Tax benefit from discontinued operations | (503) | (76) | (65)
Total income tax (benefit) expense included in Consolidated Statements of Operations | (203) | 192 | (234)
Net operating loss carry forward | 550 | 250 | 189
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Domestic | 3,991 | 3,947 | 907
Foreign | 87 | 44 | 13
Income from continuing operations before income taxes | 4,078 | 3,991 | 920
Duke Energy Carolinas |  |  |
Current income taxes |  |  |
Federal | (71) | 241 | 314
State | (13) | 23 | 35
Total current income taxes | (84) | 264 | 349
Deferred income taxes |  |  |
Federal | 230 | (130) | (171)
State | (16) | (79) | (86)
Total deferred income taxes | 214 | (209) | (257)
ITC amortization | (4) | (4) | (4)
Income tax expense from continuing operations | 126 | 51 | 88
Total income tax (benefit) expense included in Consolidated Statements of Operations | 126 | 51 | 88
Net operating loss carry forward | 97 | 32 | 20
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,726 | 1,387 | 1,044
Progress Energy |  |  |
Current income taxes |  |  |
Federal | (13) | (15) | 280
State | (3) | (4) | 29
Total current income taxes | (16) | (19) | 309
Deferred income taxes |  |  |
Federal | 310 | 203 | (167)
State | 59 | 47 | (24)
Total deferred income taxes | 369 | 250 | (191)
ITC amortization | (5) | (4) | (5)
Income tax expense from continuing operations | 348 | 227 | 113
Total income tax (benefit) expense included in Consolidated Statements of Operations | 348 | 227 | 113
Net operating loss carry forward | 128 | 95 | 39
Duke Energy Progress |  |  |
Current income taxes |  |  |
Federal | 37 | 113 | 181
State |  | 8 | 17
Total current income taxes | 37 | 121 | 198
Deferred income taxes |  |  |
Federal | 118 | (16) | (180)
State | 7 | (26) | (49)
Total deferred income taxes | 125 | (42) | (229)
ITC amortization | (4) | (4) | (5)
Income tax expense from continuing operations | 158 | 75 | (36)
Total income tax (benefit) expense included in Consolidated Statements of Operations | 158 | 75 | (36)
Net operating loss carry forward | 9 | 14 | 3
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,166 | 1,066 | 379
Duke Energy Florida |  |  |
Current income taxes |  |  |
Federal | (37) | (75) | 148
State | (23) | (17) | 24
Total current income taxes | (60) | (92) | 172
Deferred income taxes |  |  |
Federal | 201 | 202 | 1
State | 84 | 77 | 25
Total deferred income taxes | 285 | 279 | 26
Income tax expense from continuing operations | 225 | 187 | 198
Total income tax (benefit) expense included in Consolidated Statements of Operations | 225 | 187 | 198
Net operating loss carry forward | 111 | 64 | 30
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 1,134 | 925 | 969
Duke Energy Ohio |  |  |
Current income taxes |  |  |
Federal | (2) | (8) | 10
State | 1 | (2) | 1
Total current income taxes | (1) | (10) | 11
Deferred income taxes |  |  |
Federal | (22) | 35 | 30
State | 3 | 5 | 2
Total deferred income taxes | (19) | 40 | 32
ITC amortization | (1) |  |
Income tax expense from continuing operations | (21) | 30 | 43
Total income tax (benefit) expense included in Consolidated Statements of Operations | (21) | 30 | 43
Net operating loss carry forward | 7 | 2 |
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 281 | 234 | 295
Duke Energy Indiana |  |  |
Current income taxes |  |  |
Federal | 38 | 65 | 48
State | 2 | 7 | 7
Total current income taxes | 40 | 72 | 55
Deferred income taxes |  |  |
Federal | (63) | 19 | 12
State |  | 16 | 17
Total deferred income taxes | (63) | 35 | 29
ITC amortization | (1) |  |
Income tax expense from continuing operations | (24) | 107 | 84
Total income tax (benefit) expense included in Consolidated Statements of Operations | (24) | 107 | 84
Net operating loss carry forward | 13 | 8 | 8
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | 113 | 588 | 492
Piedmont |  |  |
Current income taxes |  |  |
Federal | 32 | 23 | (27)
State | 2 | 3 | (8)
Total current income taxes | 34 | 26 | (35)
Deferred income taxes |  |  |
Federal | 12 | 17 | 60
State | (7) | (13) | (7)
Total deferred income taxes | 5 | 4 | 53
Income tax expense from continuing operations | 39 | 30 | 18
Total income tax (benefit) expense included in Consolidated Statements of Operations | 39 | 30 | 18
Net operating loss carry forward | 12 | 3 | 11
Duke Energy Income from Continuing Operations Before Income Taxes [Abstract] |  |  |
Income from continuing operations before income taxes | $ 362 | $ 340 | $ 291

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