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Income Taxes (Deferred Income Taxes) (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | $ 348 | $ 347
Lease obligations | 405 | 346
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | 192 | 207
Progress Energy merger purchase accounting adjustments | 301 | 340
Tax credits and NOL carryforwards | 4,426 | 3,784
Other | 106 | 85
Valuation allowance | (519) | (518)
Total deferred income tax assets | 5,259 | 4,591
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (1,671) | (2,428)
Accelerated depreciation rates | (11,478) | (10,391)
Regulatory assets and deferred debits, net | (2,074) | (1,151)
Total deferred income tax liabilities | (15,223) | (13,970)
Net deferred income tax liabilities | (9,964) | (9,379)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 4,426 | 3,784
Valuation allowance | 519 | 518
General Business Credits |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 2,473 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 2,473 |
NOL Carryforwards | Federal |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 306 |
Valuation allowance | (4) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 306 |
Valuation allowance | 4 |
NOL Carryforwards | State |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 394 |
Valuation allowance | (109) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 394 |
Valuation allowance | 109 |
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 |
Charitable contribution carryforwards |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 18 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 18 |
Foreign Tax Credit |  |
Deferred Tax Assets, Gross [Abstract] |  |
Valuation allowance | (391) |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Valuation allowance | 391 |
Foreign Tax Credit | Foreign |  |
Deferred Tax Assets, Gross [Abstract] |  |
Tax credits and NOL carryforwards | 1,223 |
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 1,223 |
Duke Energy Carolinas |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 170 | 121
Lease obligations | 89 | 91
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | (1) | (36)
Tax credits and NOL carryforwards | 444 | 349
Regulatory liabilities and deferred credits |  | 11
Other | 18 | 12
Total deferred income tax assets | 720 | 548
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (983) | (1,205)
Accelerated depreciation rates | (3,410) | (2,977)
Regulatory assets and deferred debits, net | (480) |
Total deferred income tax liabilities | (4,873) | (4,182)
Net deferred income tax liabilities | (4,153) | (3,634)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 444 | 349
Progress Energy |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 117 | 101
Lease obligations | 263 | 197
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | 12 | 30
Tax credits and NOL carryforwards | 618 | 497
Other | 22 | 12
Total deferred income tax assets | 1,032 | 837
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (521) | (742)
Accelerated depreciation rates | (4,358) | (3,891)
Regulatory assets and deferred debits, net | (1,300) | (768)
Total deferred income tax liabilities | (6,179) | (5,401)
Net deferred income tax liabilities | (5,147) | (4,564)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 618 | 497
Duke Energy Progress |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 33 | 60
Lease obligations | 197 | 121
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | 18 | 17
Tax credits and NOL carryforwards | 167 | 160
Other | 12 | 7
Total deferred income tax assets | 427 | 365
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (432) | (610)
Accelerated depreciation rates | (1,844) | (1,546)
Regulatory assets and deferred debits, net | (628) | (417)
Total deferred income tax liabilities | (2,904) | (2,573)
Net deferred income tax liabilities | (2,477) | (2,208)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 167 | 160
Duke Energy Florida |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 83 | 40
Lease obligations | 65 | 76
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | (10) | 7
Tax credits and NOL carryforwards | 412 | 306
Other | 10 | 4
Total deferred income tax assets | 560 | 433
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (102) | (135)
Accelerated depreciation rates | (2,576) | (2,382)
Regulatory assets and deferred debits, net | (671) | (350)
Total deferred income tax liabilities | (3,349) | (2,867)
Net deferred income tax liabilities | (2,789) | (2,434)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 412 | 306
Duke Energy Ohio |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 12 | 19
Lease obligations | 4 | 4
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | 9 | 11
Tax credits and NOL carryforwards | 20 | 13
Regulatory liabilities and deferred credits | 3 | 16
Investments and other assets | 3 | 5
Other | 5 | 7
Total deferred income tax assets | 56 | 75
Deferred Tax Liabilities, Gross [Abstract] |  |
Accelerated depreciation rates | (1,192) | (1,125)
Total deferred income tax liabilities | (1,192) | (1,125)
Net deferred income tax liabilities | (1,136) | (1,050)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 20 | 13
Duke Energy Indiana |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 23 | 7
Lease obligations | 15 | 16
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | 10 | 20
Tax credits and NOL carryforwards | 208 | 195
Regulatory liabilities and deferred credits | 61 |
Investments and other assets |  | 6
Other | 2 | 2
Total deferred income tax assets | 319 | 246
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (12) |
Accelerated depreciation rates | (1,606) | (1,496)
Regulatory assets and deferred debits, net |  | (53)
Total deferred income tax liabilities | (1,618) | (1,549)
Net deferred income tax liabilities | (1,299) | (1,303)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | 208 | 195
Piedmont |  |
Deferred Tax Assets, Gross [Abstract] |  |
Deferred credits and other liabilities | 24 | 18
Lease obligations | 3 | 4
Deferred Tax Assets, Tax Deferred Expense (Benefits), Compensation and Benefits | (2) | (8)
Tax credits and NOL carryforwards | 37 | 29
Regulatory liabilities and deferred credits |  | 6
Other | 9 | 8
Total deferred income tax assets | 71 | 57
Deferred Tax Liabilities, Gross [Abstract] |  |
Investments and other assets | (28) | (39)
Accelerated depreciation rates | (892) | (833)
Regulatory assets and deferred debits, net | (21) |
Total deferred income tax liabilities | (941) | (872)
Net deferred income tax liabilities | (870) | (815)
Components and Expiration Dates of Tax Credits and NOL Carryforwards [Abstract] |  |
Tax credits and NOL carryforwards | $ 37 | $ 29

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