XML 211 R169.htm IDEA: XBRL DOCUMENT
v3.25.2

REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | $ 5,055.4 | $ 4,657.6 | $ 10,470.5 | $ 9,742.6
Total Revenues | 5,086.9 | 4,579.2 | 10,550.3 | 9,604.9
Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 0.0 | 0.0 | 0.0 | 0.0
Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 3,735.6 | 3,485.3 | 7,684.3 | 7,295.7
Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,641.5 | 1,599.2 | 3,732.8 | 3,515.3
Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,170.1 | 1,040.9 | 2,217.0 | 2,083.0
Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 849.4 | 775.7 | 1,590.1 | 1,558.7
Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 74.6 | 69.5 | 144.4 | 138.7
Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,229.7 | 1,072.4 | 2,580.0 | 2,235.2
Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 275.6 | 172.6 | 631.6 | 436.0
Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 430.8 | 430.9 | 819.9 | 799.7
Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 6.8 |  | 11.7
Retail, Trading and Marketing Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 523.3 | 462.1 | 1,128.5 | 987.8
Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 90.1 | 99.9 | 206.2 | 211.7
Total Revenues | 158.8 | 135.9 | 290.6 | 261.3
Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 31.5 | (78.4) | 79.8 | (137.7)
Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 29.4 | (35.6) | 32.7 | (34.1)
Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 2.1 | (42.8) | 47.1 | (103.6)
AEP Texas |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 531.1 | 538.4 | 1,055.5 | 1,006.6
Total Revenues | 531.2 | 539.6 | 1,054.2 | 1,006.0
AEP Texas | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 346.6 | 343.2 | 688.2 | 646.7
AEP Texas | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 180.2 | 184.9 | 352.1 | 332.2
AEP Texas | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 114.6 | 115.0 | 233.9 | 225.9
AEP Texas | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 41.7 | 34.0 | 81.2 | 69.6
AEP Texas | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 10.1 | 9.3 | 21.0 | 19.0
AEP Texas | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 175.4 | 184.8 | 348.7 | 340.7
AEP Texas | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEP Texas | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 175.4 | 184.8 | 348.7 | 340.7
AEP Texas | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 9.1 | 10.4 | 18.6 | 19.2
Total Revenues | 1.5 | 0.5 | 3.2 | 2.6
AEP Texas | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.1 | 1.2 | (1.3) | (0.6)
AEP Texas | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.4 | 1.2 | (1.1) | (0.6)
AEP Texas | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (0.3) | 0.0 | (0.2) | 0.0
AEPTCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 691.2 | 489.4 | 1,206.0 | 972.9
Total Revenues | 741.8 | 475.2 | 1,268.9 | 958.0
AEPTCo | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 682.3 | 483.2 | 1,188.2 | 958.6
AEPTCo | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTCo | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 682.3 | 483.2 | 1,188.2 | 958.6
AEPTCo | Transmission Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 555.0 | 389.0 | 962.0 | 773.0
AEPTCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 8.9 | 6.2 | 17.8 | 14.3
Total Revenues | 0.1 | 0.4 | 0.1 | 2.8
AEPTCo | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 50.6 | (14.2) | 62.9 | (14.9)
AEPTCo | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 50.5 | (14.2) | 62.9 | (14.9)
AEPTCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.1 | 0.0 | 0.0 | 0.0
APCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 940.2 | 916.7 | 2,106.5 | 2,009.7
Total Revenues | 947.6 | 910.2 | 2,120.5 | 2,003.2
APCo | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 797.9 | 785.9 | 1,818.4 | 1,725.0
APCo | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 365.2 | 364.8 | 971.6 | 891.1
APCo | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 194.0 | 187.1 | 388.5 | 375.4
APCo | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 210.5 | 205.9 | 401.9 | 402.3
APCo | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 28.2 | 28.1 | 56.4 | 56.2
APCo | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 123.8 | 117.7 | 255.2 | 249.9
APCo | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 77.9 | 72.1 | 167.5 | 157.2
APCo | Generation Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 36.0 | 36.0 | 81.0 | 77.0
APCo | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 45.9 | 45.6 | 87.7 | 92.7
APCo | Transmission Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 22.0 | 22.0 | 41.0 | 43.0
APCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 18.5 | 13.1 | 32.9 | 34.8
Total Revenues | 5.2 | 3.7 | 8.6 | 9.3
APCo | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 7.4 | (6.5) | 14.0 | (6.5)
APCo | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 7.2 | (6.5) | 13.7 | (6.6)
APCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.2 | 0.0 | 0.3 | 0.1
I&M |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 724.0 | 589.9 | 1,479.0 | 1,283.7
Total Revenues | 737.2 | 594.3 | 1,459.4 | 1,261.7
I&M | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 540.3 | 495.7 | 1,059.8 | 1,014.5
I&M | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 190.1 | 190.5 | 422.2 | 415.3
I&M | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 192.2 | 150.8 | 344.7 | 295.6
I&M | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 156.7 | 153.1 | 290.4 | 301.0
I&M | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1.3 | 1.3 | 2.5 | 2.6
I&M | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 156.8 | 64.8 | 362.3 | 212.2
I&M | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 138.2 | 54.8 | 333.3 | 192.1
I&M | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 18.6 | 10.0 | 29.0 | 20.1
I&M | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 26.9 | 29.4 | 56.9 | 57.0
I&M | Other Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 18.0 | 23.0 | 36.0 | 41.0
I&M | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 13.2 | 4.4 | (19.6) | (22.0)
I&M | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 1.2 | 0.0 | 1.0 | (0.5)
I&M | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 12.0 | 4.4 | (20.6) | (21.5)
OPCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 904.6 | 887.0 | 1,898.1 | 1,900.3
Total Revenues | 919.0 | 896.3 | 1,922.5 | 1,920.1
OPCo | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 845.3 | 834.9 | 1,762.8 | 1,782.2
OPCo | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 431.5 | 465.3 | 998.7 | 1,021.8
OPCo | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 306.2 | 276.1 | 568.5 | 562.2
OPCo | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 103.5 | 89.0 | 187.0 | 189.5
OPCo | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 4.1 | 4.5 | 8.6 | 8.7
OPCo | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 22.0 | 23.6 | 45.7 | 47.4
OPCo | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
OPCo | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 22.0 | 23.6 | 45.7 | 47.4
OPCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 37.3 | 28.5 | 89.6 | 70.7
Total Revenues | 2.6 | 2.8 | 6.2 | 5.5
OPCo | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 14.4 | 9.3 | 24.4 | 19.8
OPCo | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 12.1 | 5.3 | 17.1 | 7.9
OPCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 2.3 | 4.0 | 7.3 | 11.9
PSO |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 467.6 | 460.2 | 861.6 | 848.2
Total Revenues | 469.5 | 458.8 | 863.5 | 846.6
PSO | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 443.3 | 434.9 | 811.1 | 797.9
PSO | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 190.4 | 187.8 | 365.7 | 346.0
PSO | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 135.2 | 130.1 | 237.1 | 233.1
PSO | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 91.3 | 91.1 | 161.7 | 171.4
PSO | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 26.4 | 25.9 | 46.6 | 47.4
PSO | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 17.5 | 12.9 | 35.4 | 25.9
PSO | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1.5 | 2.7 | 5.6 | 4.9
PSO | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 16.0 | 10.2 | 29.8 | 21.0
PSO | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 6.8 | 12.4 | 15.1 | 24.4
Total Revenues | 1.8 | 9.6 | 5.1 | 15.8
PSO | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 1.9 | (1.4) | 1.9 | (1.6)
PSO | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 1.8 | (1.4) | 1.9 | (1.6)
PSO | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.1 | 0.0 | 0.0 | 0.0
SWEPCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 562.3 | 399.8 | 1,092.7 | 916.1
Total Revenues | 570.4 | 395.8 | 1,101.5 | 912.0
SWEPCo | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 452.6 | 295.4 | 878.3 | 715.4
SWEPCo | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 191.3 | 120.7 | 383.9 | 303.1
SWEPCo | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 155.4 | 100.7 | 296.1 | 240.7
SWEPCo | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 103.2 | 72.3 | 192.9 | 167.3
SWEPCo | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 2.7 | 1.7 | 5.4 | 4.3
SWEPCo | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 104.0 | 96.8 | 198.6 | 183.5
SWEPCo | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 48.6 | 50.1 | 104.3 | 97.2
SWEPCo | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 55.4 | 46.7 | 94.3 | 86.3
SWEPCo | Transmission Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 21.0 | 15.0 | 31.0 | 28.0
SWEPCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 5.7 | 7.6 | 15.8 | 17.2
Total Revenues | 0.5 | 2.4 | 4.1 | 6.3
SWEPCo | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 8.1 | (4.0) | 8.8 | (4.1)
SWEPCo | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 8.0 | (4.0) | 8.8 | (4.1)
SWEPCo | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.1 | 0.0 | 0.0 | 0.0
Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 5,788.2 | 5,012.3 | 11,741.5 | 10,511.2
Operating Segments | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 705.0 | 460.3 | 1,210.8 | 948.4
Corporate and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 27.4 | 55.5 | 70.4 | 116.4
Total Revenues | 29.6 | 57.7 | 74.2 | 110.5
Corporate and Other | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 25.9 | 30.5 | 54.6 | 68.4
Corporate and Other | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 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 | 0.0 | 0.0
Corporate and Other | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.3 | (0.2) | 0.8
Corporate and Other | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 0.0 |  | 0.0
Corporate and Other | Retail, Trading and Marketing Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.3 | (0.2) | 0.8
Corporate and Other | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 27.4 | 55.2 | 70.6 | 115.6
Corporate and Other | Other Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 26.0 | 30.0 | 55.0 | 79.0
Corporate and Other | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 2.2 | 2.2 | 3.8 | (5.9)
Corporate and Other | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.0 | 0.0 | 0.0 | 0.0
Corporate and Other | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 2.2 | 2.2 | 3.8 | (5.9)
Corporate and Other | AEPTCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 0.0 | 0.0 | 0.0 | 0.0
Reconciling Adjustments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (681.9) | (471.1) | (1,198.9) | (1,006.1)
Total Revenues | (730.9) | (490.8) | (1,265.4) | (1,016.8)
Reconciling Adjustments | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | (730.9) | (490.8) | (1,265.4) | (1,016.8)
Reconciling Adjustments | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (0.3) | (0.1) | (0.5) | (0.3)
Reconciling Adjustments | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Reconciling Adjustments | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Reconciling Adjustments | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (0.3) | (0.1) | (0.5) | (0.3)
Reconciling Adjustments | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
Reconciling Adjustments | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (637.4) | (422.2) | (1,103.8) | (888.3)
Reconciling Adjustments | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | (0.1) | 0.0 | 0.0
Reconciling Adjustments | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (622.1) | (397.0) | (1,072.3) | (815.6)
Reconciling Adjustments | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | (1.4) |  | (2.8)
Reconciling Adjustments | Retail, Trading and Marketing Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (15.3) | (23.7) | (31.5) | (69.9)
Reconciling Adjustments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | (44.2) | (48.8) | (94.6) | (117.5)
Reconciling Adjustments | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (49.0) | (19.7) | (66.5) | (10.7)
Reconciling Adjustments | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (47.0) | (17.3) | (62.3) | (16.3)
Reconciling Adjustments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (2.0) | (2.4) | (4.2) | 5.6
Reconciling Adjustments | AEPTCo |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 0.0 | 0.0 | 0.0 | 0.0
VIU | Transmission Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 65.0 | 41.0 | 104.0 | 83.0
VIU | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 2,988.2 | 2,626.8 | 6,155.4 | 5,601.1
Total Revenues | 3,015.2 | 2,619.0 | 6,153.0 | 5,566.9
VIU | Operating Segments | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 80.7 | 47.0 | 133.0 | 93.7
VIU | Operating Segments | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 2,544.3 | 2,307.4 | 5,234.0 | 4,867.2
VIU | Operating Segments | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,029.7 | 949.0 | 2,382.0 | 2,161.3
VIU | Operating Segments | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 749.5 | 649.8 | 1,414.7 | 1,294.9
VIU | Operating Segments | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 704.6 | 652.8 | 1,322.4 | 1,299.9
VIU | Operating Segments | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 60.5 | 55.8 | 114.9 | 111.1
VIU | Operating Segments | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 394.5 | 272.0 | 820.4 | 626.8
VIU | Operating Segments | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 237.3 | 149.0 | 542.3 | 384.9
VIU | Operating Segments | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 157.2 | 123.0 | 278.1 | 241.9
VIU | Operating Segments | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 0.0 |  | 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 | 0.0 | 0.0
VIU | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 49.4 | 47.4 | 101.0 | 107.1
VIU | Operating Segments | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 27.0 | (7.8) | (2.4) | (34.2)
VIU | Operating Segments | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 14.5 | (12.1) | 17.8 | (12.8)
VIU | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 12.5 | 4.3 | (20.2) | (21.4)
T&D | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,435.2 | 1,425.2 | 2,953.3 | 2,906.8
Total Revenues | 1,450.2 | 1,435.9 | 2,976.7 | 2,926.1
T&D | Operating Segments | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 7.6 | 7.1 | 18.6 | 14.1
T&D | Operating Segments | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 1,191.6 | 1,178.0 | 2,450.8 | 2,428.8
T&D | Operating Segments | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 611.8 | 650.2 | 1,350.8 | 1,354.0
T&D | Operating Segments | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 420.6 | 391.1 | 802.3 | 788.1
T&D | Operating Segments | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 145.1 | 123.0 | 268.2 | 259.1
T&D | Operating Segments | Other Retail Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 14.1 | 13.7 | 29.5 | 27.6
T&D | Operating Segments | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 197.4 | 208.3 | 394.4 | 388.1
T&D | Operating Segments | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
T&D | Operating Segments | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 197.4 | 208.3 | 394.4 | 388.1
T&D | Operating Segments | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 0.0 |  | 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 | 0.0 | 0.0
T&D | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 46.2 | 38.9 | 108.1 | 89.9
T&D | Operating Segments | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 15.0 | 10.7 | 23.4 | 19.3
T&D | Operating Segments | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 12.4 | 6.7 | 15.9 | 7.4
T&D | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 2.6 | 4.0 | 7.5 | 11.9
AEPTHCo | Transmission Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 558.0 | 393.0 | 969.0 | 780.0
AEPTHCo | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 707.2 | 502.8 | 1,237.4 | 999.6
Total Revenues | 756.6 | 489.9 | 1,298.7 | 987.2
AEPTHCo | Operating Segments | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTHCo | Operating Segments | Residential Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTHCo | Operating Segments | Commercial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTHCo | Operating Segments | Industrial Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 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 | 0.0 | 0.0
AEPTHCo | Operating Segments | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 698.3 | 496.6 | 1,219.7 | 985.3
AEPTHCo | Operating Segments | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
AEPTHCo | Operating Segments | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 698.3 | 496.6 | 1,219.7 | 985.3
AEPTHCo | Operating Segments | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 0.0 |  | 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 | 0.0 | 0.0
AEPTHCo | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 8.9 | 6.2 | 17.7 | 14.3
AEPTHCo | Operating Segments | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 49.4 | (12.9) | 61.3 | (12.4)
AEPTHCo | Operating Segments | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 49.5 | (12.9) | 61.3 | (12.4)
AEPTHCo | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (0.1) | 0.0 | 0.0 | 0.0
G&M | Retail, Trading and Marketing Revenues | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 16.0 | 24.0 | 32.0 | 70.0
G&M | Operating Segments |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 579.3 | 518.4 | 1,252.9 | 1,124.8
Total Revenues | 566.2 | 467.5 | 1,313.1 | 1,031.0
G&M | Operating Segments | Related Party |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues | 15.2 | 25.0 | 31.5 | 72.6
G&M | Operating Segments | Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 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 | 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 | 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 | 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 | 0.0 | 0.0
G&M | Operating Segments | Wholesale and Competitive Retail Revenues: |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 576.9 | 517.4 | 1,249.5 | 1,122.5
G&M | Operating Segments | Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 38.3 | 23.7 | 89.3 | 51.1
G&M | Operating Segments | Transmission Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 0.0 | 0.0 | 0.0 | 0.0
G&M | Operating Segments | Renewable Generation Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers |  | 8.2 |  | 14.5
G&M | Operating Segments | Retail, Trading and Marketing Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 538.6 | 485.5 | 1,160.2 | 1,056.9
G&M | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Revenues from Contracts with Customers | 2.4 | 1.0 | 3.4 | 2.3
G&M | Operating Segments | Alternative and Other |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | (13.1) | (50.9) | 60.2 | (93.8)
G&M | Operating Segments | Alternative Revenue Programs |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | 0.0 | 0.0 | 0.0 | 0.0
G&M | Operating Segments | Other Revenues |  |  |  |
Disaggregation of Revenue [Line Items] |  |  |  |
Total Other Revenues | $ (13.1) | $ (50.9) | $ 60.2 | $ (93.8)

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 4: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 5: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 6: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 7: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (e) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 8: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 91 -Subparagraph (g) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479777/606-10-55-91 + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 4 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-4 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Topic 220 -SubTopic 40 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147476153/220-40-55-14 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-7 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 8: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 9: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 924 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 14: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-40 Reference 15: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-4 + Details
Name: | us-gaap_RevenueFromContractWithCustomerExcludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue that is not accounted for under Topic 606. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -SubTopic 10 -Topic 220 -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_RevenueNotFromContractWithCustomer
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 815 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4A -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480434/815-10-50-4A Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478671/942-235-S50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 235 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-05(b)(2)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 Reference 5: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480738/235-10-S50-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 28 -Subparagraph (f) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482907/825-10-50-28 Reference 9: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 14 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-14 Reference 10: http://www.xbrl.org/2003/role/exampleRef -Topic 944 -SubTopic 605 -Name Accounting Standards Codification -Section 55 -Paragraph 11 -Publisher FASB -URI https://asc.fasb.org/1943274/2147477548/944-605-55-11 Reference 11: http://www.xbrl.org/2003/role/exampleRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 48 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482785/280-10-55-48 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 14: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 15: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 16: http://www.xbrl.org/2003/role/disclosureRef -Topic 235 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(g)(1)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480678/235-10-S99-1 Reference 17: http://www.xbrl.org/2003/role/disclosureRef -Topic 323 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481687/323-10-50-3 Reference 18: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 19: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(ii)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 20: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 21: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 22: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1A -Subparagraph (SX 210.13-01(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1A Reference 23: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(i)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 24: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(A)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 25: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iii)(B)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 26: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(4)(iv)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 27: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1B -Subparagraph (SX 210.13-02(a)(5)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480097/470-10-S99-1B Reference 28: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 29: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 30: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-40 Reference 31: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 32: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_Revenues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_RelatedPartyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_RetailMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_ResidentialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_CommercialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_IndustrialMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_OtherRetailMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_WholesaleandCompetitiveMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_WholesaleGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_WholesaleTransmissionMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_RenewableGenerationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_MarketingCompetitiveRetailandRenewableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ProductAndServiceOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_AlternativeandOtherMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_AlternativeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=aep_OtherAffiliatedAndNonaffiliatedMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTexasInc.Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AEPTransmissionCompanyLLCMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_AppalachianPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_IndianaMichiganPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_OhioPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_PublicServiceCompanyOfOklahomaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | dei_LegalEntityAxis=aep_SouthwesternElectricPowerCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ConsolidationItemsAxis=us-gaap_MaterialReconcilingItemsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=aep_VerticallyIntegratedUtilitiesSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=aep_TransmissionAndDistributionCompaniesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=aep_AEPTransmissionHoldcoMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=aep_GenerationAndMarketingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |