v3.26.1
Variable Interest Entities (Schedule of Consolidated VIEs) (Details) - USD ($)
$ in Millions
Mar. 31, 2026
Dec. 31, 2025
Variable Interest Entities [Line Items]    
Regulatory assets $ 2,201 $ 1,934
Other (includes amounts related to VIEs) 586 526
Regulatory assets 15,059 14,379
Current maturities of long-term debt 7,395 7,104
Long-Term Debt 80,477 80,108
Inventory 4,572 4,569
Accounts payable 4,732 5,223
Duke Energy Carolinas    
Variable Interest Entities [Line Items]    
Regulatory assets 752 730
Other (includes amounts related to VIEs) 259 75
Regulatory assets 5,177 4,502
Current maturities of long-term debt 1,649 629
Inventory 1,544 1,530
Duke Energy Progress    
Variable Interest Entities [Line Items]    
Regulatory assets 675 652
Other (includes amounts related to VIEs) 190 95
Regulatory assets 4,629 4,543
Current maturities of long-term debt 793 285
Inventory 1,350 1,363
Duke Energy Florida    
Variable Interest Entities [Line Items]    
Regulatory assets 286 102
Other (includes amounts related to VIEs) 116 52
Regulatory assets 2,130 2,106
Current maturities of long-term debt 1,087 437
Long-Term Debt 10,465 10,870
Inventory 850 847
Duke Energy Indiana    
Variable Interest Entities [Line Items]    
Regulatory assets 198 193
Regulatory assets 1,009 1,032
Current maturities of long-term debt 4 4
Inventory 550 531
DEFPF | Duke Energy Florida | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 62 62
Other (includes amounts related to VIEs) 10 34
Regulatory assets 669 682
Current maturities of long-term debt 62 61
Long-Term Debt 679 712
DECNCSF | Duke Energy Carolinas | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 12 12
Other (includes amounts related to VIEs) 6 9
Regulatory assets 175 179
Current maturities of long-term debt 11 11
Long-Term Debt 182 188
DECNCSFII | Duke Energy Carolinas | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 29 29
Other (includes amounts related to VIEs) 17 3
Regulatory assets 544 550
Current maturities of long-term debt 12 2
Long-Term Debt 566 575
DECSCSF | Duke Energy Carolinas | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 31 31
Other (includes amounts related to VIEs) 8  
Regulatory assets 525 528
Current maturities of long-term debt 13 3
Long-Term Debt 543 553
DEPNCSF | Duke Energy Progress | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 39 39
Other (includes amounts related to VIEs) 20 30
Regulatory assets 572 583
Current maturities of long-term debt 35 35
Long-Term Debt 594 611
DEPNCSFII | Duke Energy Progress | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 23 23
Other (includes amounts related to VIEs) 14 3
Regulatory assets 429 435
Current maturities of long-term debt 9 1
Long-Term Debt 448 455
DEPSCSF | Duke Energy Progress | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Regulatory assets 8 8
Other (includes amounts related to VIEs) 3 5
Regulatory assets 148 151
Current maturities of long-term debt 5 5
Long-Term Debt 155 158
DEF ProCo | Duke Energy Florida | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Inventory 675 669
Accounts payable 258 $ 289
DEI ProCo | Duke Energy Indiana | VIE primary beneficiary    
Variable Interest Entities [Line Items]    
Inventory 387  
Accounts payable $ 109