REVENUE FROM CONTRACTS WITH CUSTOMERS - Disaggregation of Revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	$ 19,969.7	$ 19,454.8	$ 19,391.7
TOTAL REVENUES	19,721.3	18,982.3	19,639.5
Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	15,077.6	14,947.2	14,453.1
Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	7,317.6	7,088.4	6,995.9
Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4,298.8	4,176.0	3,941.7
Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	3,173.3	3,389.4	3,254.2
Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	287.9	293.4	261.3
Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4,466.2	4,078.5	4,440.8
Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	851.0	773.8	1,229.5
Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,611.0	1,476.2	1,380.2
Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	18.8	73.9	121.1
Retail, Trading and Marketing Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,985.4	1,754.6	1,710.0
Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	425.9	429.1	497.8
TOTAL REVENUES	483.0	458.1	408.2
Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(248.4)	(472.5)	247.8
Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(79.1)	(117.1)	(112.5)
Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(169.3)	(355.4)	360.3
AEP TEXAS INC.
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,080.8	1,906.1	1,848.0
TOTAL REVENUES	2,079.9	1,901.9	1,846.8
AEP TEXAS INC. | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,371.8	1,251.2	1,259.6
AEP TEXAS INC. | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	724.8	655.5	667.2
AEP TEXAS INC. | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	466.6	415.2	417.5
AEP TEXAS INC. | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	141.5	145.0	139.6
AEP TEXAS INC. | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	38.9	35.5	35.3
AEP TEXAS INC. | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	673.2	619.0	563.8
AEP TEXAS INC. | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TEXAS INC. | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	673.2	619.0	563.8
AEP TEXAS INC. | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	35.8	35.9	24.6
TOTAL REVENUES	3.7	5.0	3.6
AEP TEXAS INC. | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(0.9)	(4.2)	(1.2)
AEP TEXAS INC. | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(0.9)	(4.2)	(1.2)
AEP TEXAS INC. | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,950.5	1,720.6	1,651.7
TOTAL REVENUES	1,890.9	1,672.0	1,624.5
AEP TRANSMISSION COMPANY, LLC | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,924.6	1,703.9	1,643.5
AEP TRANSMISSION COMPANY, LLC | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEP TRANSMISSION COMPANY, LLC | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,924.6	1,703.9	1,643.5
AEP TRANSMISSION COMPANY, LLC | Transmission Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,600.0	1,400.0	1,300.0
AEP TRANSMISSION COMPANY, LLC | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	25.9	16.7	8.2
AEP TRANSMISSION COMPANY, LLC | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(59.6)	(48.6)	(27.2)
AEP TRANSMISSION COMPANY, LLC | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(59.6)	(48.6)	(27.2)
AEP TRANSMISSION COMPANY, LLC | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	0.0	0.0
APPALACHIAN POWER COMPANY
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4,038.8	3,740.6	3,520.7
TOTAL REVENUES	4,032.6	3,720.7	3,519.9
APPALACHIAN POWER COMPANY | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	3,462.5	3,197.2	2,953.2
APPALACHIAN POWER COMPANY | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,772.0	1,612.9	1,558.7
APPALACHIAN POWER COMPANY | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	764.4	699.6	643.4
APPALACHIAN POWER COMPANY | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	813.1	778.4	664.0
APPALACHIAN POWER COMPANY | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	113.0	106.3	87.1
APPALACHIAN POWER COMPANY | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	489.1	469.2	466.9
APPALACHIAN POWER COMPANY | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	304.5	288.2	299.9
APPALACHIAN POWER COMPANY | Generation Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	159.0	159.0	170.0
APPALACHIAN POWER COMPANY | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	184.6	181.0	167.0
APPALACHIAN POWER COMPANY | Transmission Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	87.0	93.0	78.0
APPALACHIAN POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	87.2	74.2	100.6
TOTAL REVENUES	15.9	17.3	18.3
APPALACHIAN POWER COMPANY | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(6.2)	(19.9)	(0.8)
APPALACHIAN POWER COMPANY | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(6.4)	(20.1)	(1.3)
APPALACHIAN POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.2	0.2	0.5
INDIANA MICHIGAN POWER COMPANY
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,603.5	2,522.3	2,659.7
TOTAL REVENUES	2,572.0	2,535.9	2,669.6
INDIANA MICHIGAN POWER COMPANY | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,053.0	2,036.3	2,010.5
INDIANA MICHIGAN POWER COMPANY | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	847.2	841.9	852.4
INDIANA MICHIGAN POWER COMPANY | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	605.1	575.2	550.2
INDIANA MICHIGAN POWER COMPANY | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	595.6	614.2	602.9
INDIANA MICHIGAN POWER COMPANY | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	5.1	5.0	5.0
INDIANA MICHIGAN POWER COMPANY | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	434.5	365.7	526.8
INDIANA MICHIGAN POWER COMPANY | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	393.9	327.1	490.0
INDIANA MICHIGAN POWER COMPANY | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	40.6	38.6	36.8
INDIANA MICHIGAN POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	116.0	120.3	122.4
INDIANA MICHIGAN POWER COMPANY | Other Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	75.0	68.0	62.0
INDIANA MICHIGAN POWER COMPANY | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(31.5)	13.6	9.9
INDIANA MICHIGAN POWER COMPANY | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(7.6)	(10.9)	10.0
INDIANA MICHIGAN POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(23.9)	24.5	(0.1)
OHIO POWER COMPANY
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	3,780.9	3,802.8	3,672.1
TOTAL REVENUES	3,827.8	3,811.4	3,665.1
OHIO POWER COMPANY | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	3,522.6	3,547.9	3,363.5
OHIO POWER COMPANY | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,030.8	1,953.7	1,830.2
OHIO POWER COMPANY | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,100.7	1,082.0	947.7
OHIO POWER COMPANY | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	373.7	497.1	571.7
OHIO POWER COMPANY | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	17.4	15.1	13.9
OHIO POWER COMPANY | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	96.3	82.6	86.2
OHIO POWER COMPANY | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
OHIO POWER COMPANY | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	96.3	82.6	86.2
OHIO POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	162.0	172.3	222.4
TOTAL REVENUES	12.1	12.3	11.0
OHIO POWER COMPANY | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	46.9	8.6	(7.0)
OHIO POWER COMPANY | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	26.9	(15.3)	(25.6)
OHIO POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	20.0	23.9	18.6
PUBLIC SERVICE COMPANY OF OKLAHOMA
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,849.5	1,976.6	1,875.7
TOTAL REVENUES	1,846.4	1,977.0	1,874.7
PUBLIC SERVICE COMPANY OF OKLAHOMA | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,758.7	1,905.9	1,780.9
PUBLIC SERVICE COMPANY OF OKLAHOMA | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	799.6	831.2	816.3
PUBLIC SERVICE COMPANY OF OKLAHOMA | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	509.5	538.8	489.2
PUBLIC SERVICE COMPANY OF OKLAHOMA | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	349.1	423.1	372.5
PUBLIC SERVICE COMPANY OF OKLAHOMA | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	100.5	112.8	102.9
PUBLIC SERVICE COMPANY OF OKLAHOMA | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	51.5	49.2	65.7
PUBLIC SERVICE COMPANY OF OKLAHOMA | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	9.4	11.7	26.5
PUBLIC SERVICE COMPANY OF OKLAHOMA | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	42.1	37.5	39.2
PUBLIC SERVICE COMPANY OF OKLAHOMA | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	39.3	21.5	29.1
TOTAL REVENUES	19.5	7.4	6.2
PUBLIC SERVICE COMPANY OF OKLAHOMA | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(3.1)	0.4	(1.0)
PUBLIC SERVICE COMPANY OF OKLAHOMA | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(3.1)	0.5	(1.0)
PUBLIC SERVICE COMPANY OF OKLAHOMA | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	(0.1)	0.0
SOUTHWESTERN ELECTRIC POWER COMPANY
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,043.3	2,192.1	2,283.2
TOTAL REVENUES	2,036.3	2,182.8	2,284.4
SOUTHWESTERN ELECTRIC POWER COMPANY | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,661.6	1,834.9	1,836.6
SOUTHWESTERN ELECTRIC POWER COMPANY | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	726.4	799.5	820.7
SOUTHWESTERN ELECTRIC POWER COMPANY | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	558.1	609.4	612.3
SOUTHWESTERN ELECTRIC POWER COMPANY | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	367.9	415.9	393.5
SOUTHWESTERN ELECTRIC POWER COMPANY | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	9.2	10.1	10.1
SOUTHWESTERN ELECTRIC POWER COMPANY | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	349.0	327.7	421.9
SOUTHWESTERN ELECTRIC POWER COMPANY | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	176.9	176.9	273.2
SOUTHWESTERN ELECTRIC POWER COMPANY | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	172.1	150.8	148.7
SOUTHWESTERN ELECTRIC POWER COMPANY | Transmission Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	65.0	73.0	51.0
SOUTHWESTERN ELECTRIC POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	32.7	29.5	24.7
TOTAL REVENUES	7.5	2.4	1.9
SOUTHWESTERN ELECTRIC POWER COMPANY | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(7.0)	(9.3)	1.2
SOUTHWESTERN ELECTRIC POWER COMPANY | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(7.0)	(9.4)	1.2
SOUTHWESTERN ELECTRIC POWER COMPANY | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	0.1	0.0
Operating Segments
Disaggregation of Revenue [Line Items]
TOTAL REVENUES	21,500.5	20,523.5	21,133.4
Operating Segments | AEP TRANSMISSION COMPANY, LLC
Disaggregation of Revenue [Line Items]
TOTAL REVENUES	1,890.9	1,672.0	1,624.5
Corporate and Other
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	186.0	152.1	100.8
TOTAL REVENUES	183.1	168.0	109.9
Corporate and Other | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
Corporate and Other | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
Corporate and Other | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
Corporate and Other | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1.3	0.6	6.9
Corporate and Other | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
Corporate and Other | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
Corporate and Other | Retail, Trading and Marketing Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1.3	0.6	6.9
Corporate and Other | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	184.7	151.5	93.9
Corporate and Other | Other Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	137.0	100.0
Corporate and Other | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(2.9)	15.9	9.1
Corporate and Other | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	0.0	0.0
Corporate and Other | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(2.9)	15.9	9.1
Corporate and Other | AEP TRANSMISSION COMPANY, LLC
Disaggregation of Revenue [Line Items]
TOTAL REVENUES	0.0	0.0	0.0
Reconciling Adjustments
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(1,935.3)	(1,668.4)	(1,537.0)
TOTAL REVENUES	(1,962.3)	(1,709.2)	(1,603.8)
Reconciling Adjustments | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(0.9)	(0.9)	(0.9)
Reconciling Adjustments | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
Reconciling Adjustments | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(0.9)	(0.9)	(0.9)
Reconciling Adjustments | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
Reconciling Adjustments | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(1,720.9)	(1,507.2)	(1,431.3)
Reconciling Adjustments | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
Reconciling Adjustments | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(1,620.1)	(1,418.3)	(1,413.2)
Reconciling Adjustments | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(4.4)	(6.7)	(8.0)
Reconciling Adjustments | Retail, Trading and Marketing Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(96.4)	(82.2)	(10.1)
Reconciling Adjustments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	(213.5)	(160.3)	(104.8)
Reconciling Adjustments | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(27.0)	(40.8)	(66.8)
Reconciling Adjustments | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(29.8)	(25.5)	(57.7)
Reconciling Adjustments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	2.8	(15.3)	(9.1)
Reconciling Adjustments | AEP TRANSMISSION COMPANY, LLC
Disaggregation of Revenue [Line Items]
TOTAL REVENUES	0.0	0.0	0.0
VIU | Transmission Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	177.0	205.0
VIU | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	11,642.2	11,459.9	11,473.3
TOTAL REVENUES	11,596.6	11,449.5	11,477.5
VIU | Operating Segments | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	10,183.8	10,149.0	9,831.1
VIU | Operating Segments | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4,561.9	4,479.3	4,498.6
VIU | Operating Segments | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,731.4	2,678.8	2,576.5
VIU | Operating Segments | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,659.0	2,748.2	2,543.8
VIU | Operating Segments | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	231.5	242.7	212.2
VIU | Operating Segments | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,231.1	1,106.5	1,401.1
VIU | Operating Segments | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	747.8	662.5	958.3
VIU | Operating Segments | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	483.3	444.0	442.8
VIU | Operating Segments | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	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
VIU | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	227.3	204.4	241.1
VIU | Operating Segments | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(45.6)	(10.4)	4.2
VIU | Operating Segments | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(22.0)	(35.0)	3.8
VIU | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(23.6)	24.6	0.4
T&D | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	5,861.7	5,708.8	5,520.2
TOTAL REVENUES	5,907.7	5,713.3	5,512.0
T&D | Operating Segments | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4,894.7	4,799.1	4,622.9
T&D | Operating Segments | Residential Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,755.7	2,609.1	2,497.3
T&D | Operating Segments | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,567.4	1,497.2	1,365.2
T&D | Operating Segments | Industrial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	515.2	642.1	711.3
T&D | Operating Segments | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	56.4	50.7	49.1
T&D | Operating Segments | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	769.5	701.6	650.0
T&D | Operating Segments | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
T&D | Operating Segments | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	769.5	701.6	650.0
T&D | Operating Segments | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	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
T&D | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	197.5	208.1	247.3
T&D | Operating Segments | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	46.0	4.5	(8.2)
T&D | Operating Segments | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	26.0	(19.5)	(26.8)
T&D | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	20.0	24.0	18.6
AEPTHCo | Transmission Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,600.0	1,500.0	1,300.0
AEPTHCo | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,004.1	1,765.7	1,708.8
TOTAL REVENUES	1,950.8	1,728.5	1,677.0
AEPTHCo | Operating Segments | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
AEPTHCo | Operating Segments | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
AEPTHCo | Operating Segments | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEPTHCo | Operating Segments | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,978.3	1,748.9	1,700.6
AEPTHCo | Operating Segments | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
AEPTHCo | Operating Segments | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	1,978.3	1,748.9	1,700.6
AEPTHCo | Operating Segments | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	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
AEPTHCo | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	25.8	16.8	8.2
AEPTHCo | Operating Segments | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(53.3)	(37.2)	(31.8)
AEPTHCo | Operating Segments | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	(53.3)	(37.1)	(31.8)
AEPTHCo | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	(0.1)	0.0
G&M | Retail, Trading and Marketing Revenues | Related Party
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	96.0	82.0	59.0
G&M | Operating Segments
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,211.0	2,036.7	2,125.6
TOTAL REVENUES	2,045.4	1,632.2	2,466.9
G&M | Operating Segments | Total Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
G&M | Operating Segments | Commercial Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	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
G&M | Operating Segments | Other Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
G&M | Operating Segments | Total Wholesale and Competitive Retail Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,206.9	2,028.1	2,113.5
G&M | Operating Segments | Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	103.2	111.3	271.2
G&M | Operating Segments | Transmission Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	0.0	0.0	0.0
G&M | Operating Segments | Renewable Generation Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	23.2	80.6	129.1
G&M | Operating Segments | Retail, Trading and Marketing Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	2,080.5	1,836.2	1,713.2
G&M | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Revenues from Contracts with Customers	4.1	8.6	12.1
G&M | Operating Segments | Total Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	(165.6)	(404.5)	341.3
G&M | Operating Segments | Alternative Revenue Programs
Disaggregation of Revenue [Line Items]
Total Other Revenues	0.0	0.0	0.0
G&M | Operating Segments | Other Revenues
Disaggregation of Revenue [Line Items]
Total Other Revenues	$ (165.6)	$ (404.5)	$ 341.3