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Stock-Based Compensation (Schedule of Stock-Based Compensation Expense) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | $ 74 | $ 64 | $ 61
Pretax stock-based compensation cost | 100 | 88 | 84
Stock-based compensation costs capitalized | 5 | 5 | 5
Stock-based compensation expense | 95 | 83 | 79
Tax benefit associated with stock-based compensation expense | 21 | 19 | 18
RSU awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Pretax stock-based compensation cost | 58 | 49 | 46
Performance awards |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Pretax stock-based compensation cost | 42 | 39 | 38
Duke Energy Carolinas |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 27 | 23 | 22
Progress Energy |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 27 | 24 | 23
Duke Energy Progress |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 17 | 15 | 15
Duke Energy Florida |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 10 | 9 | 9
Duke Energy Ohio |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 5 | 5 | 4
Duke Energy Indiana |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | 7 | 6 | 6
Piedmont |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Total expense recognized | $ 4 | $ 3 | $ 3

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