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REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | $ 5,631.6 | $ 5,085.0
Total Revenues | 5,463.4 | 5,025.7
Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 0.0 | 0.0
Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 3,948.7 | 3,810.4
Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 2,091.3 | 1,916.1
Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,046.9 | 1,042.1
Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 740.7 | 783.0
Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 69.8 | 69.2
Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,566.8 | 1,162.8
Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 356.0 | 263.4
Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 389.1 | 368.8
Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 4.9
Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 821.7 | 525.7
Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 116.1 | 111.8
Total Revenues | 131.8 | 125.4
Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (168.2) | (59.3)
Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 3.3 | 1.5
Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (171.5) | (60.8)
AEP Texas |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 524.4 | 468.2
Total Revenues | 523.0 | 466.4
AEP Texas | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 341.6 | 303.5
AEP Texas | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 171.9 | 147.3
AEP Texas | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 119.3 | 110.9
AEP Texas | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 39.5 | 35.6
AEP Texas | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 10.9 | 9.7
AEP Texas | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 173.3 | 155.9
AEP Texas | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEP Texas | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 173.3 | 155.9
AEP Texas | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 9.5 | 8.8
Total Revenues | 1.7 | 2.1
AEP Texas | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (1.4) | (1.8)
AEP Texas | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (1.5) | (1.8)
AEP Texas | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.1 | 0.0
AEPTCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 514.8 | 483.5
Total Revenues | 527.1 | 482.8
AEPTCo | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 505.9 | 475.4
AEPTCo | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTCo | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 505.9 | 475.4
AEPTCo | Transmission Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 407.0 | 384.0
AEPTCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 8.9 | 8.1
Total Revenues | 0.0 | 2.4
AEPTCo | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 12.3 | (0.7)
AEPTCo | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 12.4 | (0.7)
AEPTCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (0.1) | 0.0
APCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,166.3 | 1,093.0
Total Revenues | 1,172.9 | 1,093.0
APCo | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,020.5 | 939.1
APCo | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 606.4 | 526.3
APCo | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 194.5 | 188.3
APCo | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 191.4 | 196.4
APCo | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 28.2 | 28.1
APCo | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 131.4 | 132.2
APCo | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 89.6 | 85.1
APCo | Generation Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 45.0 | 41.0
APCo | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 41.8 | 47.1
APCo | Transmission Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 19.0 | 21.0
APCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 14.4 | 21.7
Total Revenues | 3.4 | 5.6
APCo | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 6.6 | 0.0
APCo | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 6.5 | (0.1)
APCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.1 | 0.1
I&M |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 755.1 | 693.8
Total Revenues | 722.2 | 667.4
I&M | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 519.5 | 518.8
I&M | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 232.1 | 224.8
I&M | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 152.5 | 144.8
I&M | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 133.7 | 147.9
I&M | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1.2 | 1.3
I&M | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 205.5 | 147.4
I&M | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 195.1 | 137.3
I&M | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 10.4 | 10.1
I&M | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 30.1 | 27.6
I&M | Other Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 18.0 | 18.0
I&M | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (32.9) | (26.4)
I&M | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (0.2) | (0.5)
I&M | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (32.7) | (25.9)
OPCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 993.5 | 1,013.3
Total Revenues | 1,003.5 | 1,023.8
OPCo | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 917.5 | 947.3
OPCo | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 567.2 | 556.5
OPCo | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 262.3 | 286.1
OPCo | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 83.5 | 100.5
OPCo | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 4.5 | 4.2
OPCo | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 23.7 | 23.8
OPCo | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
OPCo | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 23.7 | 23.8
OPCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 52.3 | 42.2
Total Revenues | 3.6 | 2.7
OPCo | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 10.0 | 10.5
OPCo | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 5.0 | 2.6
OPCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 5.0 | 7.9
PSO |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 394.0 | 388.0
Total Revenues | 394.0 | 387.8
PSO | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 367.8 | 363.0
PSO | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 175.3 | 158.2
PSO | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 101.9 | 103.0
PSO | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 70.4 | 80.3
PSO | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 20.2 | 21.5
PSO | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 17.9 | 13.0
PSO | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 4.1 | 2.2
PSO | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 13.8 | 10.8
PSO | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 8.3 | 12.0
Total Revenues | 3.3 | 6.2
PSO | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.0 | (0.2)
PSO | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.1 | (0.2)
PSO | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (0.1) | 0.0
SWEPCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 530.4 | 516.3
Total Revenues | 531.1 | 516.2
SWEPCo | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 425.7 | 420.0
SWEPCo | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 192.6 | 182.4
SWEPCo | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 140.7 | 140.0
SWEPCo | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 89.7 | 95.0
SWEPCo | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 2.7 | 2.6
SWEPCo | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 94.6 | 86.7
SWEPCo | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 55.7 | 47.1
SWEPCo | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 38.9 | 39.6
SWEPCo | Transmission Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 10.0 | 14.0
SWEPCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 10.1 | 9.6
Total Revenues | 3.6 | 3.9
SWEPCo | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.7 | (0.1)
SWEPCo | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.8 | (0.1)
SWEPCo | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (0.1) | 0.0
Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 5,953.3 | 5,498.9
Operating Segments | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 505.8 | 488.1
Operating Segments | AEPTCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 527.1 | 482.8
Corporate and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 43.0 | 60.9
Total Revenues | 44.6 | 52.8
Corporate and Other | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 28.7 | 37.9
Corporate and Other | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (0.2) | 0.5
Corporate and Other | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Corporate and Other | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 0.0
Corporate and Other | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (0.2) | 0.5
Corporate and Other | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 43.2 | 60.4
Corporate and Other | Other Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 29.0 | 48.0
Corporate and Other | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 1.6 | (8.1)
Corporate and Other | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.0 | 0.0
Corporate and Other | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 1.6 | (8.1)
Corporate and Other | AEPTCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 0.0 | 0.0
Reconciling Adjustments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (517.0) | (535.0)
Total Revenues | (534.5) | (526.0)
Reconciling Adjustments | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | (534.5) | (526.0)
Reconciling Adjustments | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (0.2) | (0.2)
Reconciling Adjustments | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Reconciling Adjustments | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Reconciling Adjustments | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (0.2) | (0.2)
Reconciling Adjustments | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
Reconciling Adjustments | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (466.4) | (466.1)
Reconciling Adjustments | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.1
Reconciling Adjustments | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (450.2) | (418.6)
Reconciling Adjustments | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | (1.4)
Reconciling Adjustments | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (16.2) | (46.2)
Reconciling Adjustments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | (50.4) | (68.7)
Reconciling Adjustments | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (17.5) | 9.0
Reconciling Adjustments | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (15.3) | 1.0
Reconciling Adjustments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (2.2) | 8.0
Reconciling Adjustments | AEPTCo |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 0.0 | 0.0
VIU | Transmission Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 39.0 |
VIU | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 3,167.2 | 2,974.3
Total Revenues | 3,137.8 | 2,947.9
VIU | Operating Segments | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 52.3 | 46.7
VIU | Operating Segments | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 2,689.7 | 2,559.8
VIU | Operating Segments | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,352.3 | 1,212.3
VIU | Operating Segments | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 665.2 | 645.1
VIU | Operating Segments | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 617.8 | 647.1
VIU | Operating Segments | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 54.4 | 55.3
VIU | Operating Segments | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 425.9 | 354.8
VIU | Operating Segments | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 305.0 | 235.9
VIU | Operating Segments | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 120.9 | 118.9
VIU | Operating Segments | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 0.0
VIU | Operating Segments | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
VIU | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 51.6 | 59.7
VIU | Operating Segments | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (29.4) | (26.4)
VIU | Operating Segments | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 3.3 | (0.7)
VIU | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (32.7) | (25.7)
T&D | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,518.1 | 1,481.6
Total Revenues | 1,526.5 | 1,490.2
T&D | Operating Segments | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 11.0 | 7.0
T&D | Operating Segments | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1,259.2 | 1,250.8
T&D | Operating Segments | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 739.0 | 703.8
T&D | Operating Segments | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 381.7 | 397.0
T&D | Operating Segments | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 123.1 | 136.1
T&D | Operating Segments | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 15.4 | 13.9
T&D | Operating Segments | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 197.0 | 179.8
T&D | Operating Segments | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
T&D | Operating Segments | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 197.0 | 179.8
T&D | Operating Segments | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 0.0
T&D | Operating Segments | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
T&D | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 61.9 | 51.0
T&D | Operating Segments | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 8.4 | 8.6
T&D | Operating Segments | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 3.5 | 0.7
T&D | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 4.9 | 7.9
AEPTHCo | Transmission Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 411.0 | 387.0
AEPTHCo | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 530.2 | 496.8
Total Revenues | 542.1 | 497.3
AEPTHCo | Operating Segments | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 521.4 | 488.7
AEPTHCo | Operating Segments | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 521.4 | 488.7
AEPTHCo | Operating Segments | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 0.0
AEPTHCo | Operating Segments | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
AEPTHCo | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 8.8 | 8.1
AEPTHCo | Operating Segments | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 11.9 | 0.5
AEPTHCo | Operating Segments | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 11.8 | 0.5
AEPTHCo | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.1 | 0.0
G&M | Retail, Trading and Marketing Revenues | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 16.0 | 46.0
G&M | Operating Segments |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 890.1 | 606.4
Total Revenues | 746.9 | 563.5
G&M | Operating Segments | Related Party |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues | 16.3 | 47.6
G&M | Operating Segments | Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Residential Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Commercial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Industrial Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Other Retail Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Wholesale and Competitive Retail Revenues: |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 889.1 | 605.1
G&M | Operating Segments | Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 51.0 | 27.4
G&M | Operating Segments | Transmission Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0
G&M | Operating Segments | Renewable Generation Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers |  | 6.3
G&M | Operating Segments | Retail, Trading and Marketing Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 838.1 | 571.4
G&M | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Revenues from Contracts with Customers | 1.0 | 1.3
G&M | Operating Segments | Alternative and Other |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | (143.2) | (42.9)
G&M | Operating Segments | Alternative Revenue Programs |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | 0.0 | 0.0
G&M | Operating Segments | Other Revenues |  |
Disaggregation of Revenue [Line Items] |  |
Total Other Revenues | $ (143.2) | $ (42.9)

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