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Other Income and Expenses, Net (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | $ 63 | $ 29 | $ 27
AFUDC equity | 233 | 198 | 197
Post-in-service equity returns | 52 | 39 | 34
Nonoperating income, other | 313 | 332 | 134
Other income and expense, net | 661 | 598 | 392
Duke Energy Carolinas |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 9 | 10 | 2
AFUDC equity | 113 | 91 | 98
Post-in-service equity returns | 31 | 19 | 14
Nonoperating income, other | 94 | 118 | 107
Other income and expense, net | 247 | 238 | 221
Progress Energy |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 18 | 14 | 24
AFUDC equity | 74 | 67 | 68
Post-in-service equity returns | 20 | 19 | 18
Nonoperating income, other | 123 | 101 | 71
Other income and expense, net | 235 | 201 | 181
Duke Energy Progress |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 14 | 9 | 4
AFUDC equity | 61 | 52 | 52
Post-in-service equity returns | 20 | 19 | 18
Nonoperating income, other | 48 | 44 | 40
Other income and expense, net | 143 | 124 | 114
Duke Energy Florida |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 4 | 7 | 20
AFUDC equity | 13 | 15 | 16
Nonoperating income, other | 69 | 56 | 38
Other income and expense, net | 86 | 78 | 74
Duke Energy Ohio |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 8 | 25 | 11
AFUDC equity | 7 | 9 | 7
Post-in-service equity returns | 1 | 1 | 1
Nonoperating income, other | 3 | 6 |
Other income and expense, net | 19 | 41 | 19
Duke Energy Indiana |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 5 | 25 | 15
AFUDC equity | 19 | 10 | 13
Post-in-service equity returns | 1 |  | 1
Nonoperating income, other | 37 | 41 | 7
Other income and expense, net | 62 | 76 | 36
Piedmont |  |  |
Component Of Other Income Expense Nonoperating [Line Items] |  |  |
Interest income | 19 | 19 | 19
AFUDC equity | 21 | 21 | 11
Nonoperating income, other | 14 | 17 | 16
Other income and expense, net | $ 54 | $ 57 | $ 46

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