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v3.23.1

Organization and Basis of Presentation (Schedule of Inventory) (Details) - USD ($) $ in Millions | Mar. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | $ 2,739 | $ 2,604
Coal | 772 | 620
Natural gas, oil and other fuel | 354 | 360
Inventory | 3,865 | 3,584
Duke Energy Carolinas |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 948 | 876
Coal | 309 | 253
Natural gas, oil and other fuel | 46 | 35
Inventory | 1,303 | 1,164
Progress Energy |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 1,273 | 1,232
Coal | 233 | 190
Natural gas, oil and other fuel | 206 | 157
Inventory | 1,712 | 1,579
Duke Energy Progress |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 842 | 819
Coal | 128 | 99
Natural gas, oil and other fuel | 112 | 88
Inventory | 1,082 | 1,006
Duke Energy Florida |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 431 | 413
Coal | 105 | 91
Natural gas, oil and other fuel | 94 | 69
Inventory | 630 | 573
Duke Energy Ohio |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 116 | 105
Coal | 29 | 34
Natural gas, oil and other fuel | 12 | 5
Inventory | 157 | 144
Duke Energy Indiana |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 355 | 342
Coal | 202 | 144
Natural gas, oil and other fuel | 3 | 3
Inventory | 560 | 489
Piedmont |  |
Public Utilities, Inventory [Line Items] |  |
Materials and supplies | 12 | 12
Natural gas, oil and other fuel | 87 | 160
Inventory | $ 99 | $ 172

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