FAIR VALUE MEASUREMENTS - Fair Value of Assets and Liabilities on a Recurring Basis (Details) - USD ($)
$ in Millions |
Jun. 30, 2025 |
Dec. 31, 2024 |
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
$ 263.3
|
$ 258.5
|
| Risk Management Assets |
|
|
| Risk Management Assets |
728.2
|
499.5
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
4,609.7
|
4,395.1
|
| Total Assets |
5,601.2
|
5,153.1
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
297.7
|
324.4
|
| AEP Texas |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
13.3
|
23.5
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| APCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
18.2
|
16.2
|
| Risk Management Assets |
|
|
| Risk Management Assets |
109.9
|
37.1
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
128.1
|
53.3
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
2.3
|
2.2
|
| I&M |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
12.3
|
18.4
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
4,609.7
|
4,395.1
|
| Total Assets |
4,622.0
|
4,413.5
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
1.2
|
0.7
|
| OPCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
47.7
|
47.5
|
| PSO |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
96.9
|
22.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
8.1
|
5.8
|
| SWEPCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
16.7
|
3.4
|
| Risk Management Assets |
|
|
| Risk Management Assets |
70.4
|
18.1
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
87.1
|
21.5
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
3.8
|
2.3
|
| Risk Management Commodity Contracts |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
605.3
|
374.6
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
242.8
|
252.6
|
| Risk Management Commodity Contracts | AEP Texas |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Risk Management Commodity Contracts | APCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
109.9
|
37.1
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
2.3
|
2.2
|
| Risk Management Commodity Contracts | I&M |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
12.3
|
18.4
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
1.2
|
0.7
|
| Risk Management Commodity Contracts | OPCo |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
47.7
|
47.5
|
| Risk Management Commodity Contracts | PSO |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
96.9
|
22.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
8.1
|
5.8
|
| Risk Management Commodity Contracts | SWEPCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
70.4
|
18.1
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
3.8
|
2.3
|
| Commodity Hedges |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
122.9
|
124.9
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
7.0
|
0.2
|
| Fair Value Hedges |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
47.9
|
71.6
|
| Other |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
19.2
|
13.9
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(678.1)
|
(529.8)
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
12.7
|
13.7
|
| Total Assets |
(646.2)
|
(502.2)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(598.5)
|
(446.2)
|
| Other | AEP Texas |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Other | APCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
(3.5)
|
(4.6)
|
| Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
12.7
|
13.7
|
| Total Assets |
|
5.3
|
| Total Assets |
(5.1)
|
|
| Other | SWEPCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
(1.3)
|
(1.0)
|
| Other | Risk Management Commodity Contracts |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(655.5)
|
(517.2)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(576.0)
|
(433.6)
|
| Other | Risk Management Commodity Contracts | AEP Texas |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(0.2)
|
(0.3)
|
| Other | Risk Management Commodity Contracts | APCo |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(3.5)
|
(4.6)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(4.0)
|
(4.7)
|
| Other | Risk Management Commodity Contracts | I&M |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(17.8)
|
(8.4)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(27.6)
|
(9.0)
|
| Other | Risk Management Commodity Contracts | OPCo |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
(0.2)
|
| Other | Risk Management Commodity Contracts | PSO |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(3.1)
|
(1.9)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(3.2)
|
(2.0)
|
| Other | Risk Management Commodity Contracts | SWEPCo |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(1.3)
|
(1.0)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(1.3)
|
(1.1)
|
| Other | Commodity Hedges |
|
|
| Risk Management Assets |
|
|
| Total Risk Management Assets |
(22.6)
|
(12.6)
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
(22.5)
|
(12.6)
|
| Other | Fair Value Hedges |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Restricted Cash |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
51.3
|
43.1
|
| Restricted Cash | Other |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
3.1
|
0.0
|
| Other Cash Deposits |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
16.1
|
13.9
|
| Other Cash Deposits | Other |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
16.1
|
13.9
|
| Fixed Income Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
156.8
|
161.9
|
| Fixed Income Securities – Mutual Funds | Other |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Equity Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
39.1
|
39.6
|
| Equity Securities – Mutual Funds | Other |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Cash and Cash Equivalents |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
28.1
|
23.3
|
| Cash and Cash Equivalents | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
28.1
|
23.3
|
| Cash and Cash Equivalents | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
12.7
|
13.7
|
| Cash and Cash Equivalents | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
12.7
|
13.7
|
| United States Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,298.6
|
1,322.8
|
| United States Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,298.6
|
1,322.8
|
| United States Government | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| United States Government | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Corporate Debt |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
274.8
|
211.3
|
| Corporate Debt | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
274.8
|
211.3
|
| Corporate Debt | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Corporate Debt | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| State and Local Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| State and Local Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| State and Local Government | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| State and Local Government | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Subtotal Fixed Income Securities |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Subtotal Fixed Income Securities | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Subtotal Fixed Income Securities | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Subtotal Fixed Income Securities | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Equity Securities - Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,008.2
|
|
| Equity Securities - Domestic | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
2,837.7
|
| Domestic | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,008.2
|
2,837.7
|
| Domestic | Other |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Domestic | Other | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
244.1
|
244.6
|
| Risk Management Assets |
|
|
| Risk Management Assets |
2.3
|
2.9
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,023.6
|
2,847.3
|
| Total Assets |
3,270.0
|
3,094.8
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
4.7
|
4.4
|
| Level 1 | Within Current Year |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
(1.0)
|
(1.0)
|
| Level 1 | Maturity Period 2 |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
(1.0)
|
|
| Level 1 | AEP Texas |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
13.3
|
23.5
|
| Level 1 | APCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
18.2
|
16.2
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
18.2
|
16.2
|
| Level 1 | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,023.6
|
2,847.3
|
| Total Assets |
3,023.6
|
2,847.3
|
| Level 1 | SWEPCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
16.7
|
3.4
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
16.7
|
3.4
|
| Level 1 | Risk Management Commodity Contracts |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
2.3
|
2.9
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
4.7
|
4.4
|
| Level 1 | Risk Management Commodity Contracts | AEP Texas |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Risk Management Commodity Contracts | APCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Risk Management Commodity Contracts | I&M |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Risk Management Commodity Contracts | OPCo |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Risk Management Commodity Contracts | PSO |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Risk Management Commodity Contracts | SWEPCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Commodity Hedges |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
0.0
|
0.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Fair Value Hedges |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 1 | Restricted Cash |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
48.2
|
43.1
|
| Level 1 | Other Cash Deposits |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 1 | Fixed Income Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
156.8
|
161.9
|
| Level 1 | Equity Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
39.1
|
39.6
|
| Level 1 | Cash and Cash Equivalents |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
15.4
|
9.6
|
| Level 1 | Cash and Cash Equivalents | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
15.4
|
9.6
|
| Level 1 | United States Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | United States Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | Corporate Debt |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | Corporate Debt | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | State and Local Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Level 1 | State and Local Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Level 1 | Subtotal Fixed Income Securities |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | Subtotal Fixed Income Securities | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 1 | Equity Securities - Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,008.2
|
|
| Level 1 | Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
2,837.7
|
| Level 1 | Domestic | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
3,008.2
|
2,837.7
|
| Level 2 |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Risk Management Assets |
|
|
| Risk Management Assets |
886.9
|
712.9
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Total Assets |
2,460.3
|
2,247.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
757.2
|
618.3
|
| Level 2 | Within Current Year |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
5.0
|
16.0
|
| Level 2 | Maturity Period 2 |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
68.0
|
43.0
|
| Level 2 | Maturity Period 3 |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
4.0
|
4.0
|
| Level 2 | AEP Texas |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Level 2 | APCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
4.8
|
6.5
|
| Level 2 | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Total Assets |
1,590.5
|
1,554.0
|
| Level 2 | SWEPCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
1.0
|
1.0
|
| Level 2 | Risk Management Commodity Contracts |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
758.9
|
597.3
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
682.0
|
534.1
|
| Level 2 | Risk Management Commodity Contracts | AEP Texas |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.2
|
0.3
|
| Level 2 | Risk Management Commodity Contracts | APCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
4.8
|
6.5
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
6.0
|
6.9
|
| Level 2 | Risk Management Commodity Contracts | I&M |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
17.1
|
19.9
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
28.1
|
9.2
|
| Level 2 | Risk Management Commodity Contracts | OPCo |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.2
|
| Level 2 | Risk Management Commodity Contracts | PSO |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
3.0
|
3.1
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
11.2
|
7.0
|
| Level 2 | Risk Management Commodity Contracts | SWEPCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
1.0
|
1.0
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
3.5
|
2.8
|
| Level 2 | Commodity Hedges |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
128.0
|
115.6
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
27.3
|
12.6
|
| Level 2 | Fair Value Hedges |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
47.9
|
71.6
|
| Level 2 | Restricted Cash |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Level 2 | Other Cash Deposits |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 2 | Fixed Income Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 2 | Equity Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 2 | Cash and Cash Equivalents |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 2 | Cash and Cash Equivalents | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 2 | United States Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,298.6
|
1,322.8
|
| Level 2 | United States Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,298.6
|
1,322.8
|
| Level 2 | Corporate Debt |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
274.8
|
211.3
|
| Level 2 | Corporate Debt | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
274.8
|
211.3
|
| Level 2 | State and Local Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Level 2 | State and Local Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Level 2 | Subtotal Fixed Income Securities |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Level 2 | Subtotal Fixed Income Securities | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
1,573.4
|
1,534.1
|
| Level 2 | Equity Securities - Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Level 2 | Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Level 2 | Domestic | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Risk Management Assets |
|
|
| Risk Management Assets |
517.1
|
313.5
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Total Assets |
517.1
|
313.5
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
134.3
|
147.9
|
| Level 3 | Within Current Year |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
175.0
|
106.0
|
| Level 3 | Maturity Period 2 |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
203.0
|
45.0
|
| Level 3 | Maturity Period 3 |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
12.0
|
9.0
|
| Level 3 | Maturity Period Four |
|
|
| Risk Management Liabilities |
|
|
| Maturities of net fair value of risk management contracts |
(23.0)
|
(16.0)
|
| Level 3 | AEP Texas |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Level 3 | APCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
108.6
|
35.2
|
| Level 3 | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Total Assets |
13.0
|
6.9
|
| Level 3 | SWEPCo |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Total Assets |
70.7
|
18.1
|
| Level 3 | Risk Management Commodity Contracts |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
499.6
|
291.6
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
132.1
|
147.7
|
| Level 3 | Risk Management Commodity Contracts | AEP Texas |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 3 | Risk Management Commodity Contracts | APCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
108.6
|
35.2
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.3
|
0.0
|
| Level 3 | Risk Management Commodity Contracts | I&M |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
13.0
|
6.9
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.7
|
0.5
|
| Level 3 | Risk Management Commodity Contracts | OPCo |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
47.7
|
47.5
|
| Level 3 | Risk Management Commodity Contracts | PSO |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
97.0
|
20.8
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.1
|
0.8
|
| Level 3 | Risk Management Commodity Contracts | SWEPCo |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
70.7
|
18.1
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
1.6
|
0.6
|
| Level 3 | Commodity Hedges |
|
|
| Risk Management Assets |
|
|
| Risk Management Assets |
17.5
|
21.9
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
2.2
|
0.2
|
| Level 3 | Fair Value Hedges |
|
|
| Risk Management Liabilities |
|
|
| Total Risk Management Liabilities |
0.0
|
0.0
|
| Level 3 | Restricted Cash |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Restricted Cash |
0.0
|
0.0
|
| Level 3 | Other Cash Deposits |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 3 | Fixed Income Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 3 | Equity Securities – Mutual Funds |
|
|
| Other Temporary Investments and Restricted Cash |
|
|
| Total Other Temporary Investments and Restricted Cash |
0.0
|
0.0
|
| Level 3 | Cash and Cash Equivalents |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | Cash and Cash Equivalents | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | United States Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | United States Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | Corporate Debt |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | Corporate Debt | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | State and Local Government |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Level 3 | State and Local Government | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Level 3 | Subtotal Fixed Income Securities |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | Subtotal Fixed Income Securities | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
0.0
|
| Level 3 | Equity Securities - Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
0.0
|
|
| Level 3 | Domestic |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
0.0
|
| Level 3 | Domestic | I&M |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
|
|
| Spent Nuclear Fuel and Decommissioning Trusts |
$ 0.0
|
$ 0.0
|