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Revenue (Aging of Trade Receivables) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | $ 1,273 | $ 1,457
Current | 2,306 | 2,347
Deferred payment arrangements | 104 | 160
Trade and Other Receivables | 4,336 | 4,631
1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 275 | 261
31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 78 | 123
61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 47 | 74
91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 253 | 209
Duke Energy Carolinas |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 399 | 486
Current | 680 | 577
Deferred payment arrangements | 34 | 57
Trade and Other Receivables | 1,312 | 1,334
Duke Energy Carolinas | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 97 | 96
Duke Energy Carolinas | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 20 | 23
Duke Energy Carolinas | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 15 | 25
Duke Energy Carolinas | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 67 | 70
Progress Energy |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 401 | 355
Current | 1,009 | 1,059
Deferred payment arrangements | 43 | 62
Trade and Other Receivables | 1,664 | 1,689
Progress Energy | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 91 | 60
Progress Energy | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 34 | 61
Progress Energy | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 17 | 18
Progress Energy | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 69 | 74
Duke Energy Progress |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 280 | 232
Current | 612 | 637
Deferred payment arrangements | 26 | 35
Trade and Other Receivables | 1,016 | 1,004
Duke Energy Progress | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 41 | 15
Duke Energy Progress | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 23 | 49
Duke Energy Progress | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 10 | 9
Duke Energy Progress | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 24 | 27
Duke Energy Florida |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 121 | 123
Current | 395 | 417
Deferred payment arrangements | 17 | 27
Trade and Other Receivables | 646 | 680
Duke Energy Florida | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 50 | 45
Duke Energy Florida | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 11 | 12
Duke Energy Florida | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 7 | 9
Duke Energy Florida | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 45 | 47
Duke Energy Ohio |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 4 | 20
Current | 48 | 15
Deferred payment arrangements | 6 | 4
Trade and Other Receivables | 121 | 79
Duke Energy Ohio | CRC |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 141 | 148
Duke Energy Ohio | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 12 | 5
Duke Energy Ohio | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 3 | 6
Duke Energy Ohio | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 2 | 3
Duke Energy Ohio | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 46 | 26
Duke Energy Indiana |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 22 | 28
Current | 87 | 52
Trade and Other Receivables | 161 | 116
Duke Energy Indiana | CRC |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 197 | 260
Duke Energy Indiana | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 14 | 17
Duke Energy Indiana | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 7 | 2
Duke Energy Indiana | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 4 | 11
Duke Energy Indiana | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 27 | 6
Piedmont |  |
Financing Receivable, Past Due [Line Items] |  |
Unbilled receivables | 108 | 160
Current | 199 | 265
Deferred payment arrangements |  | 1
Trade and Other Receivables | 322 | 450
Piedmont | 1-30 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 9 | 15
Piedmont | 31-60 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 2 | 3
Piedmont | 61-90 days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | 1 | 2
Piedmont | 91+ days past due |  |
Financing Receivable, Past Due [Line Items] |  |
Past due | $ 3 | $ 4

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