v3.26.1
VARIABLE INTEREST ENTITIES AND EQUITY METHOD INVESTMENTS - Schedule of Consolidated Assets And Liabilities of Variable Interest Entities (Details) - USD ($)
$ in Millions
Jun. 30, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
ASSETS            
Current Assets $ 7,134   $ 6,052      
Net Property, Plant and Equipment 96,673   92,374      
Other Noncurrent Assets 17,763   16,034      
TOTAL ASSETS 121,570   114,460      
LIABILITIES AND EQUITY            
Current Liabilities 14,155   13,314      
Noncurrent Liabilities 74,062   68,890      
Equity 33,289 $ 32,978 32,218 $ 30,968 $ 27,364 $ 26,986
TOTAL LIABILITIES AND EQUITY 121,570   114,460      
SOUTHWESTERN ELECTRIC POWER COMPANY            
ASSETS            
Current Assets 641   556      
Net Property, Plant and Equipment 11,816   11,341      
Other Noncurrent Assets 1,727   1,627      
TOTAL ASSETS 14,184   13,524      
LIABILITIES AND EQUITY            
Current Liabilities 1,819   1,885      
Noncurrent Liabilities 7,115   6,740      
Equity 5,250 $ 5,083 4,899 $ 4,519 $ 3,953 $ 3,905
TOTAL LIABILITIES AND EQUITY 14,184   13,524      
INDIANA MICHIGAN POWER COMPANY            
ASSETS            
Current Assets 717   784      
Net Property, Plant and Equipment 9,040   7,944      
Other Noncurrent Assets 6,184   5,897      
TOTAL ASSETS 15,941   14,625      
LIABILITIES AND EQUITY            
Current Liabilities 1,043   949      
Noncurrent Liabilities 10,894   9,892      
TOTAL LIABILITIES AND EQUITY 15,941   14,625      
AEP TEXAS INC.            
ASSETS            
Current Assets 649   509      
Net Property, Plant and Equipment 16,913   15,864      
Other Noncurrent Assets 797   702      
TOTAL ASSETS 18,359   17,075      
LIABILITIES AND EQUITY            
Current Liabilities 1,628   1,418      
Noncurrent Liabilities 10,671   9,831      
TOTAL LIABILITIES AND EQUITY 18,359   17,075      
APPALACHIAN POWER COMPANY            
ASSETS            
Current Assets 1,287   1,033      
Net Property, Plant and Equipment 14,062   14,713      
Other Noncurrent Assets 3,360   2,046      
TOTAL ASSETS 18,709   17,792      
LIABILITIES AND EQUITY            
Current Liabilities 2,586   2,384      
Noncurrent Liabilities 10,318   9,228      
TOTAL LIABILITIES AND EQUITY 18,709   17,792      
Variable Interest Entity, Primary Beneficiary | AEP Credit            
ASSETS            
Current Assets 1,353   1,232      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 12   10      
TOTAL ASSETS 1,365   1,242      
LIABILITIES AND EQUITY            
Current Liabilities 1,293   1,176      
Noncurrent Liabilities 0   1      
Equity 72   65      
TOTAL LIABILITIES AND EQUITY 1,365   1,242      
Variable Interest Entity, Primary Beneficiary | Protected Cell of EIS            
ASSETS            
Current Assets 240   223      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 0   0      
TOTAL ASSETS 240   223      
LIABILITIES AND EQUITY            
Current Liabilities 53   56      
Noncurrent Liabilities 136   102      
Equity 51   65      
TOTAL LIABILITIES AND EQUITY 240   223      
Variable Interest Entity, Primary Beneficiary | Transource Energy            
ASSETS            
Current Assets 50   45      
Net Property, Plant and Equipment 691   658      
Other Noncurrent Assets 7   4      
TOTAL ASSETS 748   707      
LIABILITIES AND EQUITY            
Current Liabilities 45   50      
Noncurrent Liabilities 321   298      
Equity 382   359      
TOTAL LIABILITIES AND EQUITY 748   707      
Variable Interest Entity, Primary Beneficiary | SOUTHWESTERN ELECTRIC POWER COMPANY | Sabine            
ASSETS            
Current Assets 1   1      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 72   80      
TOTAL ASSETS 73   81      
LIABILITIES AND EQUITY            
Current Liabilities 14   15      
Noncurrent Liabilities 59   66      
Equity 0   0      
TOTAL LIABILITIES AND EQUITY 73   81      
Variable Interest Entity, Primary Beneficiary | SOUTHWESTERN ELECTRIC POWER COMPANY | Recovery Funding            
ASSETS            
Current Assets 16   17      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 309   312      
TOTAL ASSETS 325   329      
LIABILITIES AND EQUITY            
Current Liabilities 23   23      
Noncurrent Liabilities 300   304      
Equity 2   2      
TOTAL LIABILITIES AND EQUITY 325   329      
Variable Interest Entity, Primary Beneficiary | INDIANA MICHIGAN POWER COMPANY | DCC Fuel            
ASSETS            
Current Assets 91   118      
Net Property, Plant and Equipment 163   227      
Other Noncurrent Assets 82   118      
TOTAL ASSETS 336   463      
LIABILITIES AND EQUITY            
Current Liabilities 91   118      
Noncurrent Liabilities 245   345      
Equity 0   0      
TOTAL LIABILITIES AND EQUITY 336   463      
Variable Interest Entity, Primary Beneficiary | AEP TEXAS INC. | AEP Texas Restoration Funding | Intersegment Eliminations            
ASSETS            
Other Noncurrent Assets (4)   (4)      
Variable Interest Entity, Primary Beneficiary | AEP TEXAS INC. | AEP Texas Restoration Funding            
ASSETS            
Current Assets 19   18      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 87   98      
TOTAL ASSETS 106   116      
LIABILITIES AND EQUITY            
Current Liabilities 32   31      
Noncurrent Liabilities 73   84      
Equity 1   1      
TOTAL LIABILITIES AND EQUITY 106   116      
Variable Interest Entity, Primary Beneficiary | AEP TEXAS INC. | AEP Texas Restoration Funding | Intersegment Eliminations            
ASSETS            
Other Noncurrent Assets (1)   (1)      
Variable Interest Entity, Primary Beneficiary | APPALACHIAN POWER COMPANY | APCo Appalachian Consumer Rate Relief Funding            
ASSETS            
Current Assets 19   18      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 64   79      
TOTAL ASSETS 83   97      
LIABILITIES AND EQUITY            
Current Liabilities 31   31      
Noncurrent Liabilities 50   64      
Equity 2   2      
TOTAL LIABILITIES AND EQUITY 83   97      
Variable Interest Entity, Primary Beneficiary | APPALACHIAN POWER COMPANY | Recovery Funding            
ASSETS            
Current Assets 21          
Net Property, Plant and Equipment 0          
Other Noncurrent Assets 1,361          
TOTAL ASSETS 1,382          
LIABILITIES AND EQUITY            
Current Liabilities 42          
Noncurrent Liabilities 1,333          
Equity 7          
TOTAL LIABILITIES AND EQUITY 1,382          
Variable Interest Entity, Primary Beneficiary | KPCo | Recovery Funding            
ASSETS            
Current Assets 20   24      
Net Property, Plant and Equipment 0   0      
Other Noncurrent Assets 455   462      
TOTAL ASSETS 475   486      
LIABILITIES AND EQUITY            
Current Liabilities 23   30      
Noncurrent Liabilities 450   454      
Equity 2   2      
TOTAL LIABILITIES AND EQUITY 475   486      
Variable Interest Entity, Primary Beneficiary | KPCo | Recovery Funding | Intersegment Eliminations            
ASSETS            
Other Noncurrent Assets $ (16)   $ (16)