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Variable Interest Entities (Consolidated VIEs) (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | $ 2,150 | $ 1,641
Current Assets: Other | 638 | 462
Property, Plant and Equipment: Cost | 161,819 | 155,580
Accumulated depreciation and amortization | (50,555) | (48,827)
Other Noncurrent Assets: Other | 3,812 | 3,601
Other Noncurrent Assets: Regulatory assets | 12,487 | 12,421
Current Liabilities: Other | 2,471 | 2,936
Current maturities of long-term debt | 3,387 | 4,238
Long-Term Debt | 60,448 | 55,625
Asset retirement obligations | 12,129 | 12,286
Other Noncurrent Liabilities: Other | 1,650 | 1,719
Duke Energy Florida |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 497 | 265
Current Assets: Other | 80 | 41
Property, Plant and Equipment: Cost | 23,865 | 22,123
Accumulated depreciation and amortization | (5,819) | (5,560)
Other Noncurrent Assets: Other | 399 | 335
Other Noncurrent Assets: Regulatory assets | 1,791 | 1,799
Current Liabilities: Other | 408 | 374
Current maturities of long-term debt | 76 | 823
Long-Term Debt | 8,406 | 7,092
Asset retirement obligations | 436 | 514
Other Noncurrent Liabilities: Other | 309 | 209
Duke Energy Carolinas |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 544 | 473
Current Assets: Other | 95 | 20
Property, Plant and Equipment: Cost | 51,874 | 50,640
Accumulated depreciation and amortization | (17,854) | (17,453)
Other Noncurrent Assets: Other | 1,248 | 1,187
Other Noncurrent Assets: Regulatory assets | 2,935 | 2,996
Current Liabilities: Other | 546 | 546
Current maturities of long-term debt | 362 | 506
Long-Term Debt | 12,595 | 11,412
Asset retirement obligations | 5,052 | 5,086
Other Noncurrent Liabilities: Other | 536 | 626
Duke Energy Progress |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 533 | 492
Current Assets: Other | 83 | 60
Property, Plant and Equipment: Cost | 37,018 | 35,759
Accumulated depreciation and amortization | (13,387) | (12,801)
Other Noncurrent Assets: Other | 792 | 740
Other Noncurrent Assets: Regulatory assets | 4,118 | 3,976
Current Liabilities: Other | 448 | 411
Current maturities of long-term debt | 556 | 603
Long-Term Debt | 9,543 | 8,505
Asset retirement obligations | 5,401 | 5,352
Other Noncurrent Liabilities: Other | 87 | 102
DEFPF | Duke Energy Florida | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Receivables of VIEs | 5 | 4
Regulatory Assets: Current | 54 | 53
Current Assets: Other | 39 | 39
Other Noncurrent Assets: Regulatory assets | 883 | 937
Current Liabilities: Other | 9 | 10
Current maturities of long-term debt | 56 | 55
Long-Term Debt | 946 | 1,002
DECNCSF | Duke Energy Carolinas | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 12 |
Other Noncurrent Assets: Other | 1 |
Other Noncurrent Assets: Regulatory assets | 220 |
Current Liabilities: Other | 1 |
Current maturities of long-term debt | 5 |
Long-Term Debt | 228 |
DEPNCSF | Duke Energy Progress | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 39 |
Other Noncurrent Assets: Other | 4 |
Other Noncurrent Assets: Regulatory assets | 720 |
Current Liabilities: Other | 2 |
Current maturities of long-term debt | 15 |
Long-Term Debt | 747 |
Commercial Renewables | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Current Assets: Other | 215 | 257
Property, Plant and Equipment: Cost | 7,339 | 6,394
Accumulated depreciation and amortization | (1,474) | (1,242)
Other Noncurrent Assets: Other | 62 | 67
Current maturities of long-term debt | 167 | 167
Long-Term Debt | 1,475 | 1,569
Asset retirement obligations | 173 | 148
Other Noncurrent Liabilities: Other | $ 319 | $ 316

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