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Variable Interest Entities (Consolidated VIEs) (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | $ 1,641 | $ 1,796
Current Assets: Other | 462 | 764
Property, Plant and Equipment: Cost | 155,580 | 147,654
Accumulated depreciation and amortization | (48,827) | (45,773)
Other Noncurrent Assets: Other | 3,601 | 3,289
Other Noncurrent Assets: Regulatory assets | 12,421 | 13,222
Current Liabilities: Other | 2,936 | 2,367
Current maturities of long-term debt | 4,238 | 3,141
Long-Term Debt | 55,625 | 54,985
Asset retirement obligations | 12,286 | 12,437
Other Noncurrent Liabilities: Other | 1,719 | 1,581
Duke Energy Florida |  |
Variable Interest Entity [Line Items] |  |
Regulatory Assets: Current | 265 | 419
Current Assets: Other | 41 | 58
Property, Plant and Equipment: Cost | 22,123 | 20,457
Accumulated depreciation and amortization | (5,560) | (5,236)
Other Noncurrent Assets: Other | 335 | 311
Other Noncurrent Assets: Regulatory assets | 1,799 | 2,194
Current Liabilities: Other | 374 | 415
Current maturities of long-term debt | 823 | 571
Long-Term Debt | 7,092 | 7,416
Asset retirement obligations | 514 | 578
Other Noncurrent Liabilities: Other | 209 | 136
DEFPF | Duke Energy Florida | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Receivables of VIEs | 4 | 5
Regulatory Assets: Current | 53 | 52
Current Assets: Other | 39 | 39
Other Noncurrent Assets: Regulatory assets | 937 | 989
Current Liabilities: Other | 10 | 10
Current maturities of long-term debt | 55 | 54
Long-Term Debt | 1,002 | 1,057
Commercial Renewables | Consolidated VIEs |  |
Variable Interest Entity [Line Items] |  |
Current Assets: Other | 257 | 203
Property, Plant and Equipment: Cost | 6,394 | 5,747
Accumulated depreciation and amortization | (1,242) | (1,041)
Other Noncurrent Assets: Other | 67 | 106
Current maturities of long-term debt | 167 | 162
Long-Term Debt | 1,569 | 1,541
Asset retirement obligations | 148 | 127
Other Noncurrent Liabilities: Other | $ 316 | $ 228

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