Derivatives and Hedging (Details) gal in Millions, T in Millions, MWh in Millions, MMBTU in Millions, $ in Millions |
12 Months Ended |
Dec. 31, 2015
USD ($)
MWh
MMBTU
T
gal
|
Dec. 31, 2014
USD ($)
MWh
MMBTU
T
gal
|
Dec. 31, 2013
USD ($)
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
$ 5.8
|
|
$ 3.5
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
44.4
|
|
35.2
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
134.4
|
|
177.9
|
|
|
Long-term Risk Management Assets |
|
321.8
|
|
294.2
|
|
|
Total Assets |
|
456.2
|
|
472.1
|
|
|
Current Risk Management Liabilities |
|
87.1
|
|
91.6
|
|
|
Long-term Risk Management Liabilities |
|
179.1
|
|
130.9
|
|
|
Total Liabilities |
|
266.2
|
|
222.5
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
86.4
|
|
269.7
|
|
$ 56.9
|
Gain (Loss) on Hedging Instruments |
|
|
|
|
|
|
Gain (Loss) on Fair Value Hedging Instruments |
|
3.2
|
|
3.8
|
|
(10.4)
|
Gain (Loss) on Fair Value Portion of Long-term Debt |
|
$ (3.3)
|
|
(3.9)
|
|
10.4
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
144 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
17.5
|
|
36.0
|
|
|
Amount of Collateral Attributable to Other Contracts |
[1] |
297.8
|
|
280.6
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
300.1
|
|
235.2
|
|
|
Amount of Cash Collateral Posted |
|
0.8
|
|
8.5
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
240.6
|
|
178.2
|
|
|
Appalachian Power Co [Member] |
|
|
|
|
|
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
0.0
|
|
0.1
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
3.1
|
|
0.1
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
14.7
|
|
23.8
|
|
|
Long-term Risk Management Assets |
|
0.1
|
|
4.9
|
|
|
Current Risk Management Liabilities |
|
4.8
|
|
11.0
|
|
|
Long-term Risk Management Liabilities |
|
0.1
|
|
2.1
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
$ 36.5
|
|
54.2
|
|
1.7
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
0 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
4.9
|
|
6.3
|
|
|
Amount of Collateral Attributable to Other Contracts |
|
0.1
|
|
0.1
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
3.7
|
|
9.0
|
|
|
Amount of Cash Collateral Posted |
|
0.0
|
|
0.0
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
3.7
|
|
9.0
|
|
|
Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
0.0
|
|
0.2
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
0.6
|
|
0.0
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
10.6
|
|
22.3
|
|
|
Long-term Risk Management Assets |
|
0.0
|
|
3.3
|
|
|
Current Risk Management Liabilities |
|
6.3
|
|
5.2
|
|
|
Long-term Risk Management Liabilities |
|
1.6
|
|
1.4
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
$ 15.9
|
|
49.2
|
|
1.5
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
0 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
3.3
|
|
4.3
|
|
|
Amount of Collateral Attributable to Other Contracts |
|
0.1
|
|
0.0
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
2.5
|
|
6.1
|
|
|
Amount of Cash Collateral Posted |
|
0.0
|
|
0.0
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
2.5
|
|
6.1
|
|
|
Ohio Power Co [Member] |
|
|
|
|
|
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
0.0
|
|
0.0
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
0.5
|
|
0.1
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.0
|
|
7.2
|
|
|
Long-term Risk Management Assets |
|
19.2
|
|
45.1
|
|
|
Current Risk Management Liabilities |
|
3.6
|
|
1.9
|
|
|
Long-term Risk Management Liabilities |
|
0.0
|
|
3.0
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
$ (30.1)
|
|
86.0
|
|
2.0
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
0 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral Attributable to Other Contracts |
|
0.0
|
|
0.0
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
0.0
|
|
0.0
|
|
|
Amount of Cash Collateral Posted |
|
0.0
|
|
0.0
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
0.0
|
|
0.0
|
|
|
Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
0.0
|
|
0.0
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
0.3
|
|
0.1
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.6
|
|
0.0
|
|
|
Current Risk Management Liabilities |
|
0.2
|
|
0.9
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
$ 4.2
|
|
0.4
|
|
4.3
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
0 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
0.0
|
|
0.7
|
|
|
Amount of Collateral Attributable to Other Contracts |
|
3.2
|
|
4.1
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
0.0
|
|
0.0
|
|
|
Amount of Cash Collateral Posted |
|
0.0
|
|
0.0
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
0.0
|
|
0.0
|
|
|
Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Cash Collateral Netting |
|
|
|
|
|
|
Cash Collateral Received Netted Against Risk Management Assets |
|
0.0
|
|
0.0
|
|
|
Cash Collateral Paid Netted Against Risk Management Liabilities |
|
0.3
|
|
0.1
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.8
|
|
0.0
|
|
|
Current Risk Management Liabilities |
|
3.1
|
|
1.1
|
|
|
Long-term Risk Management Liabilities |
|
2.1
|
|
0.0
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
$ 9.9
|
|
15.8
|
|
2.5
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Maximum Term for Exposure to Variability of Future Cash Flows |
|
0 months
|
|
|
|
|
Collateral Triggering Events [Abstract] |
|
|
|
|
|
|
Fair Value of Contracts with Credit Downgrade Triggers |
|
$ 0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have been Required to Post for Derivative Contracts as well as Derivative and Non-Derivative Contracts Subject to the Same Master Netting Arrangement |
|
0.0
|
|
0.0
|
|
|
Amount of Collateral the Registrants Would Have Been Required to Post Attributable to RTOs and ISOs |
|
0.0
|
|
0.9
|
|
|
Amount of Collateral Attributable to Other Contracts |
|
0.1
|
|
0.2
|
|
|
Liabilities for Contracts with Cross Default Provisions Prior to Contractural Netting Arrangements |
|
0.0
|
|
0.0
|
|
|
Amount of Cash Collateral Posted |
|
0.0
|
|
0.0
|
|
|
Additional Settlement Liability if Cross Default Provision is Triggered |
|
0.0
|
|
0.0
|
|
|
Risk Management Contracts [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2] |
438.5
|
[3] |
452.7
|
[4] |
|
Total Liabilities |
[2] |
236.6
|
[3] |
198.4
|
[4] |
|
Risk Management Contracts [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2],[5] |
15.7
|
|
28.7
|
|
|
Total Liabilities |
[2],[5] |
4.9
|
|
13.1
|
|
|
Risk Management Contracts [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2],[5] |
12.3
|
|
25.6
|
|
|
Total Liabilities |
[2],[5] |
7.9
|
|
6.6
|
|
|
Risk Management Contracts [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2],[5] |
19.2
|
|
52.3
|
|
|
Total Liabilities |
[2],[5] |
3.6
|
|
4.9
|
|
|
Risk Management Contracts [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2],[5] |
0.6
|
|
0.0
|
|
|
Total Liabilities |
[2],[5] |
0.2
|
|
0.9
|
|
|
Risk Management Contracts [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Total Assets |
[2],[5] |
0.8
|
|
0.0
|
|
|
Total Liabilities |
[2],[5] |
5.2
|
|
1.1
|
|
|
Commodity [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
17.6
|
|
16.8
|
|
|
Hedging Liabilities |
[6] |
26.1
|
|
14.3
|
|
|
AOCI Gain (Loss) Net of Tax |
|
(5.2)
|
|
1.6
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
(0.4)
|
|
4.3
|
|
|
Derivatives and Hedging (Textuals) [Abstract] |
|
|
|
|
|
|
Cross Default Provisions Maximum Third Party Obligation Amount |
|
50.0
|
|
|
|
|
Commodity [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
0.0
|
|
0.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.0
|
|
0.0
|
|
|
Commodity [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
0.0
|
|
0.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.0
|
|
0.0
|
|
|
Commodity [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
0.0
|
|
0.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.0
|
|
0.0
|
|
|
Commodity [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
0.0
|
|
0.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.0
|
|
0.0
|
|
|
Commodity [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
0.0
|
|
0.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.0
|
|
0.0
|
|
|
Commodity [Member] | Risk Management Contracts [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[7] |
368.8
|
|
392.6
|
|
|
Long-term Risk Management Assets |
[7] |
364.8
|
|
366.7
|
|
|
Total Assets |
[7] |
733.6
|
|
759.3
|
|
|
Current Risk Management Liabilities |
[7] |
347.0
|
|
328.6
|
|
|
Long-term Risk Management Liabilities |
[7] |
223.3
|
|
208.0
|
|
|
Total Liabilities |
[7] |
570.3
|
|
536.6
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[7] |
163.3
|
|
222.7
|
|
|
Commodity [Member] | Risk Management Contracts [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
25.9
|
|
32.9
|
|
|
Long-term Risk Management Assets |
[8] |
0.3
|
|
5.2
|
|
|
Total Assets |
[8] |
26.2
|
|
38.1
|
|
|
Current Risk Management Liabilities |
[8] |
18.1
|
|
20.2
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.3
|
|
2.3
|
|
|
Total Liabilities |
[8] |
18.4
|
|
22.5
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
7.8
|
|
15.6
|
|
|
Commodity [Member] | Risk Management Contracts [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
22.8
|
|
28.5
|
|
|
Long-term Risk Management Assets |
[8] |
0.6
|
|
3.5
|
|
|
Total Assets |
[8] |
23.4
|
|
32.0
|
|
|
Current Risk Management Liabilities |
[8] |
17.0
|
|
11.3
|
|
|
Long-term Risk Management Liabilities |
[8] |
2.6
|
|
1.6
|
|
|
Total Liabilities |
[8] |
19.6
|
|
12.9
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
3.8
|
|
19.1
|
|
|
Commodity [Member] | Risk Management Contracts [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
7.2
|
|
|
Long-term Risk Management Assets |
[8] |
19.2
|
|
45.1
|
|
|
Total Assets |
[8] |
19.2
|
|
52.3
|
|
|
Current Risk Management Liabilities |
[8] |
4.1
|
|
2.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
3.0
|
|
|
Total Liabilities |
[8] |
4.1
|
|
5.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
15.1
|
|
47.3
|
|
|
Commodity [Member] | Risk Management Contracts [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.6
|
|
0.4
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.6
|
|
0.4
|
|
|
Current Risk Management Liabilities |
[8] |
0.5
|
|
1.3
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.5
|
|
1.3
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.1
|
|
(0.9)
|
|
|
Commodity [Member] | Risk Management Contracts [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.8
|
|
0.5
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.8
|
|
0.5
|
|
|
Current Risk Management Liabilities |
[8] |
3.4
|
|
1.6
|
|
|
Long-term Risk Management Liabilities |
[8] |
2.1
|
|
0.0
|
|
|
Total Liabilities |
[8] |
5.5
|
|
1.6
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
(4.7)
|
|
(1.1)
|
|
|
Commodity [Member] | Hedging Contracts [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[7] |
8.2
|
|
30.0
|
|
|
Long-term Risk Management Assets |
[7] |
11.7
|
|
3.8
|
|
|
Total Assets |
[7] |
19.9
|
|
33.8
|
|
|
Current Risk Management Liabilities |
[7] |
9.1
|
|
23.4
|
|
|
Long-term Risk Management Liabilities |
[7] |
19.3
|
|
7.9
|
|
|
Total Liabilities |
[7] |
28.4
|
|
31.3
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[7] |
(8.5)
|
|
2.5
|
|
|
Commodity [Member] | Hedging Contracts [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Commodity [Member] | Hedging Contracts [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Commodity [Member] | Hedging Contracts [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Commodity [Member] | Hedging Contracts [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Commodity [Member] | Hedging Contracts [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Interest Rate and Foreign Currency [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
560.3
|
|
815.2
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.4
|
|
1.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
(17.2)
|
|
(19.1)
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
(1.5)
|
|
(2.0)
|
|
|
Interest Rate and Foreign Currency [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
3.6
|
|
3.9
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.7
|
|
0.3
|
|
|
Interest Rate and Foreign Currency [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
(13.3)
|
|
(14.4)
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
(1.3)
|
|
(1.1)
|
|
|
Interest Rate and Foreign Currency [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
4.3
|
|
5.6
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
1.2
|
|
1.4
|
|
|
Interest Rate and Foreign Currency [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
4.2
|
|
5.0
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
0.8
|
|
0.8
|
|
|
Interest Rate and Foreign Currency [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Impact of Cash Flow Hedges on the Balance Sheet |
|
|
|
|
|
|
Hedging Assets |
[6] |
0.0
|
|
0.0
|
|
|
Hedging Liabilities |
[6] |
0.0
|
|
0.0
|
|
|
AOCI Gain (Loss) Net of Tax |
|
(9.1)
|
|
(11.1)
|
|
|
Portion Expected to be Reclassified to Net Income During the Next Twelve Months |
|
(1.7)
|
|
(2.0)
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[7] |
0.1
|
|
2.6
|
|
|
Long-term Risk Management Assets |
[7] |
0.0
|
|
0.0
|
|
|
Total Assets |
[7] |
0.1
|
|
2.6
|
|
|
Current Risk Management Liabilities |
[7] |
0.3
|
|
0.7
|
|
|
Long-term Risk Management Liabilities |
[7] |
3.2
|
|
9.2
|
|
|
Total Liabilities |
[7] |
3.5
|
|
9.9
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[7] |
(3.4)
|
|
(7.3)
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Interest Rate and Foreign Currency [Member] | Hedging Contracts [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[8] |
0.0
|
|
0.0
|
|
|
Total Assets |
[8] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[8] |
0.0
|
|
0.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[8] |
0.0
|
|
0.0
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
377.1
|
|
425.2
|
|
|
Long-term Risk Management Assets |
|
376.5
|
|
370.5
|
|
|
Total Assets |
|
753.6
|
|
795.7
|
|
|
Current Risk Management Liabilities |
|
356.4
|
|
352.7
|
|
|
Long-term Risk Management Liabilities |
|
245.8
|
|
225.1
|
|
|
Total Liabilities |
|
602.2
|
|
577.8
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
151.4
|
|
217.9
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
25.9
|
|
32.9
|
|
|
Long-term Risk Management Assets |
|
0.3
|
|
5.2
|
|
|
Total Assets |
|
26.2
|
|
38.1
|
|
|
Current Risk Management Liabilities |
|
18.1
|
|
20.2
|
|
|
Long-term Risk Management Liabilities |
|
0.3
|
|
2.3
|
|
|
Total Liabilities |
|
18.4
|
|
22.5
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
7.8
|
|
15.6
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
22.8
|
|
28.5
|
|
|
Long-term Risk Management Assets |
|
0.6
|
|
3.5
|
|
|
Total Assets |
|
23.4
|
|
32.0
|
|
|
Current Risk Management Liabilities |
|
17.0
|
|
11.3
|
|
|
Long-term Risk Management Liabilities |
|
2.6
|
|
1.6
|
|
|
Total Liabilities |
|
19.6
|
|
12.9
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
3.8
|
|
19.1
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.0
|
|
7.2
|
|
|
Long-term Risk Management Assets |
|
19.2
|
|
45.1
|
|
|
Total Assets |
|
19.2
|
|
52.3
|
|
|
Current Risk Management Liabilities |
|
4.1
|
|
2.0
|
|
|
Long-term Risk Management Liabilities |
|
0.0
|
|
3.0
|
|
|
Total Liabilities |
|
4.1
|
|
5.0
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
15.1
|
|
47.3
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.6
|
|
0.4
|
|
|
Long-term Risk Management Assets |
|
0.0
|
|
0.0
|
|
|
Total Assets |
|
0.6
|
|
0.4
|
|
|
Current Risk Management Liabilities |
|
0.5
|
|
1.3
|
|
|
Long-term Risk Management Liabilities |
|
0.0
|
|
0.0
|
|
|
Total Liabilities |
|
0.5
|
|
1.3
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
0.1
|
|
(0.9)
|
|
|
Gross Amounts of Risk Management Assets/Liabilities Recognized [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
|
0.8
|
|
0.5
|
|
|
Long-term Risk Management Assets |
|
0.0
|
|
0.0
|
|
|
Total Assets |
|
0.8
|
|
0.5
|
|
|
Current Risk Management Liabilities |
|
3.4
|
|
1.6
|
|
|
Long-term Risk Management Liabilities |
|
2.1
|
|
0.0
|
|
|
Total Liabilities |
|
5.5
|
|
1.6
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
|
(4.7)
|
|
(1.1)
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[9] |
(242.7)
|
|
(247.3)
|
|
|
Long-term Risk Management Assets |
[9] |
(54.7)
|
|
(76.3)
|
|
|
Total Assets |
[9] |
(297.4)
|
|
(323.6)
|
|
|
Current Risk Management Liabilities |
[9] |
(269.3)
|
|
(261.1)
|
|
|
Long-term Risk Management Liabilities |
[9] |
(66.7)
|
|
(94.2)
|
|
|
Total Liabilities |
[9] |
(336.0)
|
|
(355.3)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[9] |
38.6
|
|
31.7
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[10] |
(10.3)
|
|
(9.1)
|
|
|
Long-term Risk Management Assets |
[10] |
(0.2)
|
|
(0.3)
|
|
|
Total Assets |
[10] |
(10.5)
|
|
(9.4)
|
|
|
Current Risk Management Liabilities |
[10] |
(13.3)
|
|
(9.2)
|
|
|
Long-term Risk Management Liabilities |
[10] |
(0.2)
|
|
(0.2)
|
|
|
Total Liabilities |
[10] |
(13.5)
|
|
(9.4)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[10] |
3.0
|
|
0.0
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[10] |
(10.5)
|
|
(6.2)
|
|
|
Long-term Risk Management Assets |
[10] |
(0.6)
|
|
(0.2)
|
|
|
Total Assets |
[10] |
(11.1)
|
|
(6.4)
|
|
|
Current Risk Management Liabilities |
[10] |
(10.7)
|
|
(6.1)
|
|
|
Long-term Risk Management Liabilities |
[10] |
(1.0)
|
|
(0.2)
|
|
|
Total Liabilities |
[10] |
(11.7)
|
|
(6.3)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[10] |
0.6
|
|
(0.1)
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[10] |
0.0
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[10] |
0.0
|
|
0.0
|
|
|
Total Assets |
[10] |
0.0
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[10] |
(0.5)
|
|
(0.1)
|
|
|
Long-term Risk Management Liabilities |
[10] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[10] |
(0.5)
|
|
(0.1)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[10] |
0.5
|
|
0.1
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[10] |
0.0
|
|
(0.4)
|
|
|
Long-term Risk Management Assets |
[10] |
0.0
|
|
0.0
|
|
|
Total Assets |
[10] |
0.0
|
|
(0.4)
|
|
|
Current Risk Management Liabilities |
[10] |
(0.3)
|
|
(0.4)
|
|
|
Long-term Risk Management Liabilities |
[10] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[10] |
(0.3)
|
|
(0.4)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[10] |
0.3
|
|
0.0
|
|
|
Gross Amounts Offset in the Statement of Financial Position [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[10] |
0.0
|
|
(0.5)
|
|
|
Long-term Risk Management Assets |
[10] |
0.0
|
|
0.0
|
|
|
Total Assets |
[10] |
0.0
|
|
(0.5)
|
|
|
Current Risk Management Liabilities |
[10] |
(0.3)
|
|
(0.5)
|
|
|
Long-term Risk Management Liabilities |
[10] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[10] |
(0.3)
|
|
(0.5)
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[10] |
0.3
|
|
0.0
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[11] |
134.4
|
|
177.9
|
|
|
Long-term Risk Management Assets |
[11] |
321.8
|
|
294.2
|
|
|
Total Assets |
[11] |
456.2
|
|
472.1
|
|
|
Current Risk Management Liabilities |
[11] |
87.1
|
|
91.6
|
|
|
Long-term Risk Management Liabilities |
[11] |
179.1
|
|
130.9
|
|
|
Total Liabilities |
[11] |
266.2
|
|
222.5
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[11] |
190.0
|
|
249.6
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[12] |
15.6
|
|
23.8
|
|
|
Long-term Risk Management Assets |
[12] |
0.1
|
|
4.9
|
|
|
Total Assets |
[12] |
15.7
|
|
28.7
|
|
|
Current Risk Management Liabilities |
[12] |
4.8
|
|
11.0
|
|
|
Long-term Risk Management Liabilities |
[12] |
0.1
|
|
2.1
|
|
|
Total Liabilities |
[12] |
4.9
|
|
13.1
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[12] |
10.8
|
|
15.6
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[12] |
12.3
|
|
22.3
|
|
|
Long-term Risk Management Assets |
[12] |
0.0
|
|
3.3
|
|
|
Total Assets |
[12] |
12.3
|
|
25.6
|
|
|
Current Risk Management Liabilities |
[12] |
6.3
|
|
5.2
|
|
|
Long-term Risk Management Liabilities |
[12] |
1.6
|
|
1.4
|
|
|
Total Liabilities |
[12] |
7.9
|
|
6.6
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[12] |
4.4
|
|
19.0
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[12] |
0.0
|
|
7.2
|
|
|
Long-term Risk Management Assets |
[12] |
19.2
|
|
45.1
|
|
|
Total Assets |
[12] |
19.2
|
|
52.3
|
|
|
Current Risk Management Liabilities |
[12] |
3.6
|
|
1.9
|
|
|
Long-term Risk Management Liabilities |
[12] |
0.0
|
|
3.0
|
|
|
Total Liabilities |
[12] |
3.6
|
|
4.9
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[12] |
15.6
|
|
47.4
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[12] |
0.6
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[12] |
0.0
|
|
0.0
|
|
|
Total Assets |
[12] |
0.6
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[12] |
0.2
|
|
0.9
|
|
|
Long-term Risk Management Liabilities |
[12] |
0.0
|
|
0.0
|
|
|
Total Liabilities |
[12] |
0.2
|
|
0.9
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[12] |
0.4
|
|
(0.9)
|
|
|
Net Amounts of Assets/Liabilities Presented in the Statement of Financial Position [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Fair Value of Derivative Instruments |
|
|
|
|
|
|
Current Risk Management Assets |
[12] |
0.8
|
|
0.0
|
|
|
Long-term Risk Management Assets |
[12] |
0.0
|
|
0.0
|
|
|
Total Assets |
[12] |
0.8
|
|
0.0
|
|
|
Current Risk Management Liabilities |
[12] |
3.1
|
|
1.1
|
|
|
Long-term Risk Management Liabilities |
[12] |
2.1
|
|
0.0
|
|
|
Total Liabilities |
[12] |
5.2
|
|
1.1
|
|
|
Total MTM Derivative Contract Net Assets (Liabilities) |
[12] |
$ (4.4)
|
|
$ (1.1)
|
|
|
Power [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
317.8
|
|
333.7
|
|
|
Power [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
40.9
|
|
32.5
|
|
|
Power [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
22.8
|
|
23.8
|
|
|
Power [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
13.3
|
|
20.3
|
|
|
Power [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
11.3
|
|
16.8
|
|
|
Power [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MWh |
|
14.0
|
|
20.5
|
|
|
Coal [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
4.4
|
|
3.1
|
|
|
Coal [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
0.0
|
|
0.3
|
|
|
Coal [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
1.6
|
|
0.5
|
|
|
Coal [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
0.0
|
|
0.0
|
|
|
Coal [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
0.0
|
|
0.0
|
|
|
Coal [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Mass Notional Amount | T |
|
2.8
|
|
1.5
|
|
|
Natural Gas [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
38.2
|
|
105.9
|
|
|
Natural Gas [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
0.3
|
|
0.4
|
|
|
Natural Gas [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
0.2
|
|
0.3
|
|
|
Natural Gas [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
0.0
|
|
0.0
|
|
|
Natural Gas [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
0.2
|
|
0.0
|
|
|
Natural Gas [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Energy Notional Amount | MMBTU |
|
0.2
|
|
0.0
|
|
|
Heating Oil and Gasoline [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
7.4
|
|
5.5
|
|
|
Heating Oil and Gasoline [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
1.4
|
|
1.1
|
|
|
Heating Oil and Gasoline [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
0.7
|
|
0.5
|
|
|
Heating Oil and Gasoline [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
1.6
|
|
1.1
|
|
|
Heating Oil and Gasoline [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
0.8
|
|
0.6
|
|
|
Heating Oil and Gasoline [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Volume Notional Amount | gal |
|
0.9
|
|
0.7
|
|
|
Interest Rate Contract [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
$ 113.5
|
|
$ 152.0
|
|
|
Interest Rate Contract [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
2.4
|
|
5.1
|
|
|
Interest Rate Contract [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
1.6
|
|
3.5
|
|
|
Interest Rate Contract [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Interest Rate Contract [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Interest Rate Contract [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Commodity |
|
|
|
|
|
|
Derivative, Notional Amount |
|
0.0
|
|
0.0
|
|
|
Vertically Integrated Utilities Revenues [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
6.7
|
|
35.4
|
|
15.1
|
Vertically Integrated Utilities Revenues [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Vertically Integrated Utilities Revenues [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Vertically Integrated Utilities Revenues [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Vertically Integrated Utilities Revenues [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Vertically Integrated Utilities Revenues [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Transmission and Distribution Utilities Revenues [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(4.3)
|
|
|
|
|
Transmission and Distribution Utilities Revenues [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Transmission and Distribution Utilities Revenues [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Transmission and Distribution Utilities Revenues [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Transmission and Distribution Utilities Revenues [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Transmission and Distribution Utilities Revenues [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Generation & Marketing Revenues [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
54.9
|
|
52.5
|
|
49.2
|
Generation & Marketing Revenues [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Generation & Marketing Revenues [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Generation & Marketing Revenues [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Generation & Marketing Revenues [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Generation & Marketing Revenues [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Electric Generation, Transmission and Distribution Revenues [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.0
|
Electric Generation, Transmission and Distribution Revenues [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
1.1
|
|
8.7
|
|
2.0
|
Electric Generation, Transmission and Distribution Revenues [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
3.3
|
|
13.2
|
|
10.6
|
Electric Generation, Transmission and Distribution Revenues [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(4.3)
|
|
0.0
|
|
4.9
|
Electric Generation, Transmission and Distribution Revenues [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.2
|
|
0.4
|
Electric Generation, Transmission and Distribution Revenues [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
0.6
|
Sales to AEP Affiliates [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
|
Sales to AEP Affiliates [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
2.4
|
|
0.0
|
|
|
Sales to AEP Affiliates [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
8.2
|
|
(0.9)
|
|
|
Sales to AEP Affiliates [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
|
Sales to AEP Affiliates [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.9
|
|
|
Sales to AEP Affiliates [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
0.0
|
|
|
Purchased Electricity for Resale [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
6.4
|
|
|
|
|
Purchased Electricity for Resale [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
2.0
|
|
|
|
|
Purchased Electricity for Resale [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.4
|
|
|
|
|
Purchased Electricity for Resale [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Purchased Electricity for Resale [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Purchased Electricity for Resale [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
0.0
|
|
|
|
|
Other Operation Expense [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(3.3)
|
|
|
|
|
Other Operation Expense [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Other Operation Expense [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Other Operation Expense [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.6)
|
|
|
|
|
Other Operation Expense [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Other Operation Expense [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.5)
|
|
|
|
|
Maintenance Expense [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(3.3)
|
|
|
|
|
Maintenance Expense [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.7)
|
|
|
|
|
Maintenance Expense [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Maintenance Expense [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.5)
|
|
|
|
|
Maintenance Expense [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Maintenance Expense [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
(0.4)
|
|
|
|
|
Regulatory Assets [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
(0.9)
|
|
(11.4)
|
|
(2.4)
|
Regulatory Assets [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
3.4
|
|
(4.1)
|
|
0.0
|
Regulatory Assets [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
(2.7)
|
|
(0.5)
|
|
0.0
|
Regulatory Assets [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
0.0
|
|
0.0
|
|
(5.8)
|
Regulatory Assets [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
0.6
|
|
(1.0)
|
|
2.9
|
Regulatory Assets [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
(4.3)
|
|
(1.1)
|
|
0.4
|
Regulatory Liabilities [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
30.2
|
|
193.2
|
|
(5.0)
|
Regulatory Liabilities [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
28.7
|
|
49.6
|
|
(0.3)
|
Regulatory Liabilities [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
7.5
|
|
37.4
|
|
(9.1)
|
Regulatory Liabilities [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
(24.7)
|
|
86.0
|
|
2.9
|
Regulatory Liabilities [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
4.4
|
|
0.3
|
|
1.0
|
Regulatory Liabilities [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
|
|
|
|
|
|
Amount of Gain (Loss) Recognized on Risk Management Contracts |
[13] |
$ 15.1
|
|
$ 16.9
|
|
$ 1.5
|
|
|