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Variable Interest Entities (Consolidated VIEs) (Details) - USD ($)
$ in Millions
Dec. 31, 2025
Dec. 31, 2024
Variable Interest Entity [Line Items]    
Regulatory Assets: Current $ 1,934 $ 2,739
Current Assets: Other 526 695
Other Noncurrent Assets: Regulatory assets 14,379 14,220
Other Noncurrent Assets: Other 4,167 3,507
Interest accrued 922 854
Current maturities of long-term debt 7,104 4,349
Current Liabilities: Other 2,265 2,080
Long-Term Debt 80,108 76,340
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 4,569 4,496
Accounts payable 5,223 5,436
Duke Energy Florida    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 102 1,022
Current Assets: Other 52 227
Other Noncurrent Assets: Regulatory assets 2,106 2,064
Other Noncurrent Assets: Other 561 465
Interest accrued 87 86
Current maturities of long-term debt 437 534
Current Liabilities: Other 375 342
Long-Term Debt 10,870 9,814
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 847 745
Accounts payable 792 1,418
Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 730 685
Current Assets: Other 75 52
Other Noncurrent Assets: Regulatory assets 4,502 4,199
Other Noncurrent Assets: Other 1,304 1,127
Interest accrued 214 201
Current maturities of long-term debt 629 521
Current Liabilities: Other 621 541
Long-Term Debt 17,848 16,669
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,530 1,536
Accounts payable 1,670 1,809
Duke Energy Progress    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 652 626
Current Assets: Other 95 104
Other Noncurrent Assets: Regulatory assets 4,543 4,555
Other Noncurrent Assets: Other 781 724
Interest accrued 145 122
Current maturities of long-term debt 285 983
Current Liabilities: Other 370 427
Long-Term Debt 13,461 11,371
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 1,363 1,341
Accounts payable 886 749
Consolidated VIEs    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 204 120
Current Assets: Other 88 90
Other Noncurrent Assets: Regulatory assets 3,108 1,705
Current maturities of long-term debt 118 1,012
Long-Term Debt 3,308 1,842
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Accounts payable 296 214
Consolidated VIEs | Duke Energy Florida    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 62 61
Current Assets: Other 34 35
Other Noncurrent Assets: Regulatory assets 682 741
Current maturities of long-term debt 61 59
Long-Term Debt 712 773
Inventory (includes $669 at 2025 and $494 at 2024 related to VIEs) 669 494
Accounts payable 289 208
Consolidated VIEs | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 72 12
Current Assets: Other 12 9
Other Noncurrent Assets: Regulatory assets 1,257 189
Current maturities of long-term debt 16 510
Long-Term Debt 1,316 198
Consolidated VIEs | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 70 47
Current Assets: Other 38 40
Other Noncurrent Assets: Regulatory assets 1,169 775
Current maturities of long-term debt 41 443
Long-Term Debt 1,224 809
Consolidated VIEs | DEFPF | Duke Energy Florida    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 62 61
Current Assets: Other 34 35
Other Noncurrent Assets: Regulatory assets 682 741
Other Noncurrent Assets: Other 7 7
Current maturities of long-term debt 61 59
Current Liabilities: Other 7 8
Long-Term Debt 712 773
Consolidated VIEs | DECNCSF | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Receivables of VIEs 1  
Regulatory Assets: Current 12 12
Current Assets: Other 9 9
Other Noncurrent Assets: Regulatory assets 179 189
Other Noncurrent Assets: Other 1 1
Current maturities of long-term debt 11 10
Current Liabilities: Other   2
Long-Term Debt 188 198
Consolidated VIEs | DECNCSFII | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 29  
Current Assets: Other 3  
Other Noncurrent Assets: Regulatory assets 550  
Other Noncurrent Assets: Other 3  
Current maturities of long-term debt 2  
Long-Term Debt 575  
Consolidated VIEs | DECSCSF | Duke Energy Carolinas    
Variable Interest Entity [Line Items]    
Regulatory Assets: Current 31  
Other Noncurrent Assets: Regulatory assets 528  
Other Noncurrent Assets: Other 3  
Current maturities of long-term debt 3  
Long-Term Debt 553  
Consolidated VIEs | DEPNCSF | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 4  
Regulatory Assets: Current 39 39
Current Assets: Other 30 27
Other Noncurrent Assets: Regulatory assets 583 620
Other Noncurrent Assets: Other 4 4
Current maturities of long-term debt 35 34
Current Liabilities: Other   10
Long-Term Debt 611 646
Consolidated VIEs | DEPNCSFII | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 3  
Regulatory Assets: Current 23  
Current Assets: Other 3  
Other Noncurrent Assets: Regulatory assets 435  
Other Noncurrent Assets: Other 2  
Current maturities of long-term debt 1  
Long-Term Debt 455  
Consolidated VIEs | DEPSCSF | Duke Energy Progress    
Variable Interest Entity [Line Items]    
Receivables of VIEs 2  
Regulatory Assets: Current 8 8
Current Assets: Other 5 13
Other Noncurrent Assets: Regulatory assets 151 155
Other Noncurrent Assets: Other 1 1
Current maturities of long-term debt 5 9
Current Liabilities: Other   7
Long-Term Debt $ 158 $ 163