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Derivatives and Hedging (Location and Fair Value Amounts of Derivatives Reflected in the Condensed Consolidated Balance Sheets) (Details) - USD ($) $ in Millions | Jun. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | $ 322 | $ 795
Location and fair value amounts of derivatives (Liability) | 509 | 437
Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 205 | 582
Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 117 | 213
Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 251 | 193
Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 258 | 244
Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 168 | 478
Location and fair value amounts of derivatives (Liability) | 489 | 377
Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 144 | 317
Location and fair value amounts of derivatives (Liability) | 4 | 2
Foreign Currency Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 10 |
Location and fair value amounts of derivatives (Liability) | 16 |
Equity Securities Contract |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) |  | 58
Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 75 | 265
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 93 | 213
Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 235 | 175
Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 254 | 202
Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 23 | 216
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 2 |
Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 4 | 2
Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 107 |
Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 12 |
Designated as Hedging Instruments | Interest Rate Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 101
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 10 |
Designated as Hedging Instruments | Foreign Currency Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 16 | 18
Designated as Hedging Instruments | Foreign Currency Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) |  | 40
Duke Energy Carolinas |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 62 | 330
Location and fair value amounts of derivatives (Liability) | 183 | 127
Duke Energy Carolinas | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 16 | 226
Duke Energy Carolinas | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 46 | 104
Duke Energy Carolinas | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 121 | 96
Duke Energy Carolinas | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 62 | 31
Duke Energy Carolinas | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 61 | 236
Location and fair value amounts of derivatives (Liability) | 183 | 127
Duke Energy Carolinas | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 | 94
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 16 | 132
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 45 | 104
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 121 | 96
Duke Energy Carolinas | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 62 | 31
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 94
Duke Energy Carolinas | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Progress Energy |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 90 | 248
Location and fair value amounts of derivatives (Liability) | 146 | 66
Progress Energy | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 41 | 140
Progress Energy | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 49 | 108
Progress Energy | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 86 | 36
Progress Energy | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 60 | 30
Progress Energy | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 66 | 207
Location and fair value amounts of derivatives (Liability) | 145 | 66
Progress Energy | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 24 | 41
Location and fair value amounts of derivatives (Liability) | 1 |
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 18 | 99
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 48 | 108
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 86 | 36
Progress Energy | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 59 | 30
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 23 | 41
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Progress Energy | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Progress |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 60 | 230
Location and fair value amounts of derivatives (Liability) | 146 | 48
Duke Energy Progress | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 12 | 122
Duke Energy Progress | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 48 | 108
Duke Energy Progress | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 86 | 18
Duke Energy Progress | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 60 | 30
Duke Energy Progress | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 60 | 207
Location and fair value amounts of derivatives (Liability) | 145 | 48
Duke Energy Progress | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 23
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 12 | 99
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 48 | 108
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 86 | 18
Duke Energy Progress | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 59 | 30
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 23
Duke Energy Progress | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Florida |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 30 | 17
Location and fair value amounts of derivatives (Liability) |  | 19
Duke Energy Florida | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 29 | 17
Duke Energy Florida | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Duke Energy Florida | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) |  | 19
Duke Energy Florida | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 6 |
Location and fair value amounts of derivatives (Liability) |  | 19
Duke Energy Florida | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 24 | 17
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 6 |
Duke Energy Florida | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) |  | 19
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 23 | 17
Duke Energy Florida | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Duke Energy Ohio |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 4 | 5
Location and fair value amounts of derivatives (Liability) | 1 | 2
Duke Energy Ohio | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 4 | 5
Duke Energy Ohio | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 | 2
Duke Energy Ohio | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 4 | 5
Duke Energy Ohio | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 | 2
Duke Energy Ohio | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 4 | 5
Duke Energy Ohio | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 | 2
Duke Energy Indiana |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 37 | 110
Location and fair value amounts of derivatives (Liability) | 7 | 16
Duke Energy Indiana | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 37 | 110
Duke Energy Indiana | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 6 | 16
Duke Energy Indiana | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Indiana | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 37 | 29
Location and fair value amounts of derivatives (Liability) | 6 | 16
Duke Energy Indiana | Interest Rate Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 81
Location and fair value amounts of derivatives (Liability) | 1 |
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 37 | 29
Duke Energy Indiana | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 6 | 16
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) |  | 81
Duke Energy Indiana | Not Designated as Hedging Instruments | Interest Rate Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 1 |
Piedmont |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Location and fair value amounts of derivatives (Liability) | 156 | 168
Piedmont | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Piedmont | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 23 | 27
Piedmont | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 133 | 141
Piedmont | Commodity Contracts |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Location and fair value amounts of derivatives (Liability) | 156 | 168
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current assets |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Asset) | 1 |
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Current liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | 23 | 27
Piedmont | Not Designated as Hedging Instruments | Commodity Contracts | Noncurrent liabilities |  |
Derivatives, Fair Value [Line Items] |  |
Location and fair value amounts of derivatives (Liability) | $ 133 | $ 141

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