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Revenue (Aging of Trade Receivables) (Details) - USD ($) $ in Millions | Mar. 31, 2024 | Feb. 29, 2024 | Dec. 31, 2023
--- | --- | --- | ---
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | $ 1,066 |  | $ 1,273
Current | 2,301 |  | 2,306
Deferred Payment Arrangements | 115 |  | 104
Trade and Other Receivables | 4,103 |  | 4,336
CRC | VIE primary beneficiary |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accounts receivable from securitization | 0 | $ 682 | 663
30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 95 |  | 78
60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 46 |  | 47
Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 265 |  | 275
Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 215 |  | 253
Duke Energy Carolinas |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 361 |  | 399
Current | 706 |  | 680
Deferred Payment Arrangements | 40 |  | 34
Trade and Other Receivables | 1,304 |  | 1,312
Duke Energy Carolinas | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 33 |  | 20
Duke Energy Carolinas | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 18 |  | 15
Duke Energy Carolinas | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 82 |  | 97
Duke Energy Carolinas | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 64 |  | 67
Progress Energy |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 361 |  | 401
Current | 967 |  | 1,009
Deferred Payment Arrangements | 39 |  | 43
Trade and Other Receivables | 1,553 |  | 1,664
Progress Energy | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 33 |  | 34
Progress Energy | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 11 |  | 17
Progress Energy | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 85 |  | 91
Progress Energy | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 57 |  | 69
Duke Energy Progress |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 250 |  | 280
Current | 586 |  | 612
Deferred Payment Arrangements | 29 |  | 26
Trade and Other Receivables | 968 |  | 1,016
Duke Energy Progress | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 24 |  | 23
Duke Energy Progress | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 8 |  | 10
Duke Energy Progress | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 50 |  | 41
Duke Energy Progress | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 21 |  | 24
Duke Energy Florida |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 111 |  | 121
Current | 380 |  | 395
Deferred Payment Arrangements | 10 |  | 17
Trade and Other Receivables | 584 |  | 646
Duke Energy Florida | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 9 |  | 11
Duke Energy Florida | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 3 |  | 7
Duke Energy Florida | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 35 |  | 50
Duke Energy Florida | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 36 |  | 45
Duke Energy Ohio |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 113 |  | 4
Current | 215 |  | 48
Deferred Payment Arrangements | 28 |  | 6
Trade and Other Receivables | 478 |  | 121
Duke Energy Ohio | CRC |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables |  |  | 141
Duke Energy Ohio | CRC | VIE primary beneficiary |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accounts receivable from securitization |  | 366 |
Duke Energy Ohio | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 15 |  | 3
Duke Energy Ohio | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 7 |  | 2
Duke Energy Ohio | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 33 |  | 12
Duke Energy Ohio | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 67 |  | 46
Duke Energy Indiana |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 174 |  | 22
Current | 192 |  | 87
Deferred Payment Arrangements | 7 |  | 0
Trade and Other Receivables | 445 |  | 161
Duke Energy Indiana | CRC |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables |  |  | 197
Duke Energy Indiana | CRC | VIE primary beneficiary |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Accounts receivable from securitization |  | $ 316 |
Duke Energy Indiana | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 7 |  | 7
Duke Energy Indiana | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 3 |  | 4
Duke Energy Indiana | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 39 |  | 14
Duke Energy Indiana | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 23 |  | 27
Piedmont |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Unbilled Receivables | 57 |  | 108
Current | 208 |  | 199
Deferred Payment Arrangements | 1 |  | 0
Trade and Other Receivables | 309 |  | 322
Piedmont | 30-60 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 7 |  | 2
Piedmont | 60-90 days |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 7 |  | 1
Piedmont | Financial Asset, 1 to 29 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | 25 |  | 9
Piedmont | Financial Asset, Equal to or Greater than 90 Days Past Due |  |  |
Financing Receivable, Past Due [Line Items] |  |  |
Trade and other receivables | $ 4 |  | $ 3

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