Financing Activities (Details) - USD ($) $ in Millions |
1 Months Ended |
12 Months Ended |
Feb. 21, 2019 |
Jan. 31, 2019 |
Dec. 31, 2018 |
Dec. 31, 2017 |
Dec. 31, 2016 |
Shares of Company |
|
|
|
|
|
|
|
Beginning Balance, Shares |
|
|
513,450,036
|
512,210,644
|
512,048,520
|
|
511,389,173
|
Issued |
|
|
|
1,239,392
|
162,124
|
|
659,347
|
Ending Balance, Shares |
|
|
|
513,450,036
|
512,210,644
|
|
512,048,520
|
Treasury Stock, Shares, Beginning Balance |
|
|
20,204,160
|
20,205,046
|
20,336,592
|
|
20,336,592
|
Partners' Capital Account, Units, Treasury Units Reissued |
[1] |
|
|
(886)
|
(131,546)
|
|
|
Treasury Stock, Shares, Ending Balance |
|
|
|
20,204,160
|
20,205,046
|
|
20,336,592
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 18,903.3
|
$ 16,478.3
|
|
|
Pollution Control Bonds |
[2] |
|
|
1,643.8
|
1,621.7
|
|
|
Notes Payable |
[3] |
|
|
204.7
|
260.8
|
|
|
Securitization Bonds |
|
|
|
1,111.4
|
1,416.5
|
|
|
Spent Nuclear Fuel Obligation |
[4] |
|
|
273.6
|
268.6
|
|
|
Other Long-term Debt |
|
|
|
1,209.9
|
1,127.4
|
|
|
Total Long-term Debt Outstanding |
|
|
|
23,346.7
|
21,173.3
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
1,698.5
|
|
|
|
Principal Amount, 2020 |
|
|
|
1,508.3
|
|
|
|
Principal Amount, 2021 |
|
|
|
1,961.5
|
|
|
|
Principal Amount, 2022 |
|
|
|
1,668.4
|
|
|
|
Principal Amount, 2023 |
|
|
|
539.6
|
|
|
|
Principal Amount, After 2023 |
|
|
|
16,150.9
|
|
|
|
Principal Amount, Total |
|
|
|
23,527.2
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(180.5)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
23,346.7
|
21,173.3
|
|
|
Short-term Debt |
|
|
|
|
|
|
|
Securitized Debt for Receivables |
[5] |
|
|
750.0
|
718.0
|
|
|
Commercial Paper |
|
|
|
1,160.0
|
898.6
|
|
|
Notes Payable |
|
|
|
0.0
|
22.0
|
|
|
Total Short-term Debt |
|
|
|
$ 1,910.0
|
$ 1,638.6
|
|
|
Securitized Debt for Receivables |
[5],[6] |
|
|
2.16%
|
1.22%
|
|
|
Comparative Accounts Receivable Information |
|
|
|
|
|
|
|
Effective Interest Rates on Securitization of Accounts Receivable |
|
|
|
2.16%
|
1.22%
|
|
0.70%
|
Net Uncollectible Accounts Receivable Written Off |
|
|
|
$ 27.6
|
$ 23.4
|
|
$ 23.7
|
Customer Accounts Receivable Managed Portfolio |
|
|
|
|
|
|
|
Accounts Receivable Retained Interest and Pledged as Collateral Less Uncollectible Accounts |
|
|
|
972.5
|
925.5
|
|
|
Total Principal Outstanding |
|
|
|
750.0
|
718.0
|
|
|
Delinquent Securitized Accounts Receivable |
|
|
|
50.3
|
41.1
|
|
|
Bad Debt Reserves Related to Securitized Sale of Accounts Receivable |
|
|
|
27.5
|
28.7
|
|
|
Unbilled Receivables Related to Securitization, Sale of Accounts Receivable |
|
|
|
281.4
|
303.2
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
16,195.7
|
15,424.9
|
|
16,380.1
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
2,782.0
|
3,087.9
|
|
1,794.9
|
Proceeds from Issuance of Long-term Debt |
|
|
|
4,945.7
|
3,854.1
|
|
2,594.9
|
Total Commitment From Bank Conduits To Finance Receivables |
|
|
|
750.0
|
|
|
|
Reaquired Pollution Control Bonds Held by Trustees |
|
|
|
$ 574.0
|
|
|
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Restricted Net Assets |
|
|
|
$ 12,400.0
|
|
|
|
Retained Earnings Available to Pay Dividends |
|
|
|
7,700.0
|
|
|
|
Dividend Restrictions |
[7] |
|
|
1,591.4
|
|
|
|
Dividends Paid on Common Stock |
|
|
|
(1,255.5)
|
$ (1,191.9)
|
|
(1,121.0)
|
Credit Facilities, Total |
|
|
|
4,000.0
|
|
|
|
Maximum Amount of Commercial Paper Outstanding |
|
|
|
$ 2,300.0
|
|
|
|
Weighted Average Interest Rate of Commercial Paper Outstanding During Year |
|
|
|
2.332%
|
|
|
|
Commercial Paper [Member] |
|
|
|
|
|
|
|
Short-term Debt |
|
|
|
|
|
|
|
Debt, Weighted Average Interest Rate |
[6] |
|
|
2.9649%
|
1.85%
|
|
|
Loans Payable [Member] |
|
|
|
|
|
|
|
Short-term Debt |
|
|
|
|
|
|
|
Debt, Weighted Average Interest Rate |
[6] |
|
|
0.00%
|
2.92%
|
|
|
AEP Texas Inc. [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 2,398.4
|
$ 1,932.2
|
|
|
Pollution Control Bonds |
|
|
|
490.9
|
490.5
|
|
|
Securitization Bonds |
|
|
|
791.2
|
1,026.1
|
|
|
Other Long-term Debt |
|
|
|
200.8
|
200.5
|
|
|
Total Long-term Debt Outstanding |
|
|
|
3,881.3
|
3,649.3
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
501.1
|
|
|
|
Principal Amount, 2020 |
|
|
|
377.7
|
|
|
|
Principal Amount, 2021 |
|
|
|
66.2
|
|
|
|
Principal Amount, 2022 |
|
|
|
493.0
|
|
|
|
Principal Amount, 2023 |
|
|
|
195.0
|
|
|
|
Principal Amount, After 2023 |
|
|
|
2,275.5
|
|
|
|
Principal Amount, Total |
|
|
|
3,908.5
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(27.2)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
3,881.3
|
3,649.3
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
1,493.0
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
266.1
|
323.1
|
|
428.7
|
Proceeds from Issuance of Long-term Debt |
|
|
|
$ 494.0
|
749.6
|
|
199.2
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 353.7
|
|
|
|
Dividends Paid on Common Stock |
|
|
|
0.0
|
0.0
|
|
$ (34.0)
|
AEP Texas Inc. [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
390.6
|
296.0
|
|
|
Maximum Loans to Money Pool |
|
|
|
106.9
|
451.7
|
|
|
Average Borrowings from Money Pool |
|
|
|
176.0
|
194.8
|
|
|
Average Loans to Money Pool |
|
|
|
47.1
|
264.6
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
(216.0)
|
103.5
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 500.0
|
$ 400.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.26%
|
1.29%
|
|
0.88%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.29%
|
1.26%
|
|
0.72%
|
AEP Texas Inc. [Member] | Nonutility [Member] |
|
|
|
|
|
|
|
Maximum Interest Rate for Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
1.11%
|
Minimum Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.97%
|
Maximum Interest Rate For Funds Loaned |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate for Funds Loaned |
|
|
|
1.83%
|
0.00%
|
|
0.75%
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Loans to Money Pool |
|
|
|
$ 8.4
|
$ 8.6
|
|
|
Average Loans to Money Pool |
|
|
|
8.1
|
8.3
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
$ 8.0
|
$ 8.4
|
|
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
1.00%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.36%
|
1.32%
|
|
0.86%
|
AEP Texas Inc. [Member] | Direct Borrowing [Member] |
|
|
|
|
|
|
|
Maximum Interest Rate for Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.98%
|
Minimum Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.69%
|
Maximum Interest Rate For Funds Loaned |
|
|
|
0.00%
|
0.00%
|
|
1.02%
|
Minimum Interest Rate for Funds Loaned |
|
|
|
0.00%
|
0.00%
|
|
0.99%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.83%
|
Average Interest Rate For Funds Loaned |
|
|
|
0.00%
|
0.00%
|
|
1.00%
|
AEP Transmission Co [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 2,823.0
|
$ 2,550.4
|
|
|
Total Long-term Debt Outstanding |
|
|
|
2,823.0
|
2,550.4
|
[8] |
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
85.0
|
|
|
|
Principal Amount, 2020 |
|
|
|
0.0
|
|
|
|
Principal Amount, 2021 |
|
|
|
50.0
|
|
|
|
Principal Amount, 2022 |
|
|
|
104.0
|
|
|
|
Principal Amount, 2023 |
|
|
|
60.0
|
|
|
|
Principal Amount, After 2023 |
|
|
|
2,551.0
|
|
|
|
Principal Amount, Total |
|
|
|
2,850.0
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(27.0)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
2,823.0
|
2,550.4
|
[8] |
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
832.0
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
50.0
|
0.0
|
|
$ 300.0
|
Proceeds from Issuance of Long-term Debt |
|
|
|
321.0
|
617.6
|
|
$ 686.9
|
Sub-Limit of Secured Debt |
|
|
|
$ 50.0
|
|
|
|
Maximum Percentage of Consolidated Tangible Net Assets |
|
|
|
10.00%
|
|
|
|
Tangible Capital to Tangible Assets |
|
|
|
0.60%
|
|
|
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 0.0
|
|
|
|
AEP Transmission Co [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
371.3
|
467.2
|
|
|
Maximum Loans to Money Pool |
|
|
|
276.4
|
268.0
|
|
|
Average Borrowings from Money Pool |
|
|
|
177.9
|
180.5
|
|
|
Average Loans to Money Pool |
|
|
|
58.4
|
119.8
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
35.8
|
109.2
|
|
|
Authorized Short Term Borrowing Limit |
[9] |
|
|
$ 795.0
|
$ 795.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.27%
|
1.36%
|
|
0.85%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.10%
|
1.27%
|
|
0.83%
|
AEP Transmission Co [Member] | Direct Borrowing [Member] |
|
|
|
|
|
|
|
Maximum Interest Rate for Funds Borrowed |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate For Funds Borrowed |
|
|
|
1.76%
|
0.92%
|
|
0.69%
|
Maximum Interest Rate For Funds Loaned |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate for Funds Loaned |
|
|
|
1.76%
|
0.92%
|
|
0.69%
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
$ 1.2
|
$ 4.1
|
|
|
Maximum Loans to Money Pool |
|
|
|
104.7
|
151.9
|
|
|
Average Borrowings from Money Pool |
|
|
|
1.1
|
1.1
|
|
|
Average Loans to Money Pool |
|
|
|
49.8
|
39.3
|
|
|
Borrowings from Parent |
|
|
|
1.2
|
1.1
|
|
|
Loans to Parent |
|
|
|
16.9
|
22.5
|
|
|
Authorized Short Term Borrowing Limit |
[10] |
|
|
$ 75.0
|
$ 75.0
|
|
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.36%
|
1.33%
|
|
0.83%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.36%
|
1.36%
|
|
0.87%
|
Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 3,047.3
|
$ 3,045.1
|
|
|
Pollution Control Bonds |
[2] |
|
|
616.0
|
512.2
|
|
|
Securitization Bonds |
|
|
|
272.3
|
295.9
|
|
|
Other Long-term Debt |
|
|
|
127.0
|
126.9
|
|
|
Total Long-term Debt Outstanding |
|
|
|
4,062.6
|
3,980.1
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
430.7
|
|
|
|
Principal Amount, 2020 |
|
|
|
90.3
|
|
|
|
Principal Amount, 2021 |
|
|
|
393.0
|
|
|
|
Principal Amount, 2022 |
|
|
|
230.4
|
|
|
|
Principal Amount, 2023 |
|
|
|
26.6
|
|
|
|
Principal Amount, After 2023 |
|
|
|
2,924.4
|
|
|
|
Principal Amount, Total |
|
|
|
4,095.4
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(32.8)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
4,062.6
|
3,980.1
|
|
|
Accounts Receivable and Accrued Unbilled Revenue |
|
|
|
|
|
|
|
Accounts Receivable and Accrued Unbilled Revenues |
|
|
|
133.3
|
136.2
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
2,993.2
|
|
|
|
Proceeds on Sale of Receivables to AEP Credit |
|
|
|
|
|
|
|
Proceeds from Sale of Receivables to AEP Credit |
|
|
|
1,421.0
|
1,372.8
|
|
$ 1,412.5
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
124.0
|
377.9
|
|
213.6
|
Proceeds from Issuance of Long-term Debt |
|
|
|
$ 203.2
|
320.9
|
|
$ 314.0
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 17.6
|
|
|
|
Appalachian Power Co [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
295.5
|
231.5
|
|
|
Maximum Loans to Money Pool |
|
|
|
23.7
|
160.7
|
|
|
Average Borrowings from Money Pool |
|
|
|
175.3
|
144.3
|
|
|
Average Loans to Money Pool |
|
|
|
23.3
|
30.0
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
(182.6)
|
(162.5)
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 600.0
|
$ 600.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.26%
|
1.28%
|
|
0.80%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.21%
|
1.29%
|
|
0.82%
|
Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 2,149.0
|
$ 1,809.0
|
|
|
Pollution Control Bonds |
[2] |
|
|
264.5
|
264.6
|
|
|
Notes Payable |
[3] |
|
|
135.8
|
188.6
|
|
|
Spent Nuclear Fuel Obligation |
[4] |
|
|
273.6
|
268.6
|
|
|
Other Long-term Debt |
|
|
|
212.5
|
214.3
|
|
|
Total Long-term Debt Outstanding |
|
|
|
3,035.4
|
2,745.1
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
155.4
|
|
|
|
Principal Amount, 2020 |
|
|
|
41.6
|
|
|
|
Principal Amount, 2021 |
|
|
|
256.4
|
|
|
|
Principal Amount, 2022 |
|
|
|
7.0
|
|
|
|
Principal Amount, 2023 |
|
|
|
252.4
|
|
|
|
Principal Amount, After 2023 |
|
|
|
2,351.5
|
|
|
|
Principal Amount, Total |
|
|
|
3,064.3
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(28.9)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
3,035.4
|
2,745.1
|
|
|
Accounts Receivable and Accrued Unbilled Revenue |
|
|
|
|
|
|
|
Accounts Receivable and Accrued Unbilled Revenues |
|
|
|
152.9
|
136.5
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
2,381.0
|
|
|
|
Proceeds on Sale of Receivables to AEP Credit |
|
|
|
|
|
|
|
Proceeds from Sale of Receivables to AEP Credit |
|
|
|
1,843.0
|
1,612.9
|
|
$ 1,596.2
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
884.9
|
260.7
|
|
100.2
|
Proceeds from Issuance of Long-term Debt |
|
|
|
$ 1,168.1
|
530.1
|
|
$ 569.4
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 454.1
|
|
|
|
Indiana Michigan Power Co [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
322.1
|
367.4
|
|
|
Maximum Loans to Money Pool |
|
|
|
657.8
|
12.6
|
|
|
Average Borrowings from Money Pool |
|
|
|
255.5
|
204.9
|
|
|
Average Loans to Money Pool |
|
|
|
110.7
|
12.6
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
11.6
|
(199.2)
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 500.0
|
$ 500.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.16%
|
1.27%
|
|
0.80%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.08%
|
1.29%
|
|
0.80%
|
Ohio Power Co [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 1,635.5
|
$ 1,591.4
|
|
|
Pollution Control Bonds |
|
|
|
32.3
|
32.3
|
|
|
Securitization Bonds |
|
|
|
47.8
|
94.5
|
|
|
Other Long-term Debt |
|
|
|
1.0
|
1.1
|
|
|
Total Long-term Debt Outstanding |
|
|
|
1,716.6
|
1,719.3
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
47.9
|
|
|
|
Principal Amount, 2020 |
|
|
|
0.1
|
|
|
|
Principal Amount, 2021 |
|
|
|
500.1
|
|
|
|
Principal Amount, 2022 |
|
|
|
0.1
|
|
|
|
Principal Amount, 2023 |
|
|
|
0.1
|
|
|
|
Principal Amount, After 2023 |
|
|
|
1,182.8
|
|
|
|
Principal Amount, Total |
|
|
|
1,731.1
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(14.5)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
1,716.6
|
1,719.3
|
|
|
Accounts Receivable and Accrued Unbilled Revenue |
|
|
|
|
|
|
|
Accounts Receivable and Accrued Unbilled Revenues |
|
|
|
395.2
|
367.4
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
3,079.9
|
|
|
|
Proceeds on Sale of Receivables to AEP Credit |
|
|
|
|
|
|
|
Proceeds from Sale of Receivables to AEP Credit |
|
|
|
2,674.5
|
2,339.0
|
|
$ 2,633.0
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
397.1
|
46.4
|
|
395.9
|
Proceeds from Issuance of Long-term Debt |
|
|
|
392.8
|
0.0
|
|
$ 0.0
|
Reaquired Pollution Control Bonds Held by Trustees |
|
|
|
345.0
|
|
|
|
Dividend Restrictions |
|
|
|
0.0
|
|
|
|
Ohio Power Co [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
270.8
|
280.6
|
|
|
Maximum Loans to Money Pool |
|
|
|
225.0
|
56.2
|
|
|
Average Borrowings from Money Pool |
|
|
|
167.8
|
137.0
|
|
|
Average Loans to Money Pool |
|
|
|
189.4
|
27.9
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
(114.1)
|
(87.8)
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 500.0
|
$ 400.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.18%
|
1.37%
|
|
0.85%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.47%
|
0.98%
|
|
0.74%
|
Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
Shares of Company |
|
|
|
|
|
|
|
Beginning Balance, Shares |
|
|
10,482,000
|
10,482,000
|
|
|
|
Ending Balance, Shares |
|
|
|
10,482,000
|
10,482,000
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 1,144.9
|
$ 1,144.1
|
|
|
Pollution Control Bonds |
|
|
|
12.6
|
12.6
|
|
|
Other Long-term Debt |
|
|
|
129.5
|
129.8
|
|
|
Total Long-term Debt Outstanding |
|
|
|
1,287.0
|
1,286.5
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
375.5
|
|
|
|
Principal Amount, 2020 |
|
|
|
13.2
|
|
|
|
Principal Amount, 2021 |
|
|
|
250.5
|
|
|
|
Principal Amount, 2022 |
|
|
|
0.5
|
|
|
|
Principal Amount, 2023 |
|
|
|
0.5
|
|
|
|
Principal Amount, After 2023 |
|
|
|
652.0
|
|
|
|
Principal Amount, Total |
|
|
|
1,292.2
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(5.2)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
1,287.0
|
1,286.5
|
|
|
Accounts Receivable and Accrued Unbilled Revenue |
|
|
|
|
|
|
|
Accounts Receivable and Accrued Unbilled Revenues |
|
|
|
109.7
|
115.1
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
1,536.4
|
|
|
|
Proceeds on Sale of Receivables to AEP Credit |
|
|
|
|
|
|
|
Proceeds from Sale of Receivables to AEP Credit |
|
|
|
1,484.6
|
1,337.0
|
|
$ 1,269.3
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
0.5
|
0.5
|
|
275.4
|
Proceeds from Issuance of Long-term Debt |
|
|
|
$ 0.0
|
0.0
|
|
$ 274.2
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 152.7
|
|
|
|
Public Service Co Of Oklahoma [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
193.7
|
185.2
|
|
|
Maximum Loans to Money Pool |
|
|
|
31.8
|
0.0
|
|
|
Average Borrowings from Money Pool |
|
|
|
104.5
|
119.3
|
|
|
Average Loans to Money Pool |
|
|
|
12.9
|
0.0
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
(105.5)
|
(149.6)
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 300.0
|
$ 300.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.27%
|
1.32%
|
|
0.96%
|
Average Interest Rate For Funds Loaned |
|
|
|
1.98%
|
0.00%
|
|
0.83%
|
Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Long-term Debt |
|
|
|
|
|
|
|
Senior Unsecured Notes |
|
|
|
$ 2,427.0
|
$ 2,110.7
|
|
|
Pollution Control Bonds |
|
|
|
53.5
|
135.1
|
|
|
Notes Payable |
[3] |
|
|
68.9
|
72.1
|
|
|
Other Long-term Debt |
|
|
|
164.0
|
124.0
|
|
|
Total Long-term Debt Outstanding |
|
|
|
2,713.4
|
2,441.9
|
|
|
Outstanding Long-term Debt |
|
|
|
|
|
|
|
Principal Amount, 2019 |
|
|
|
59.7
|
|
|
|
Principal Amount, 2020 |
|
|
|
121.2
|
|
|
|
Principal Amount, 2021 |
|
|
|
6.2
|
|
|
|
Principal Amount, 2022 |
|
|
|
281.2
|
|
|
|
Principal Amount, 2023 |
|
|
|
6.2
|
|
|
|
Principal Amount, After 2023 |
|
|
|
2,262.9
|
|
|
|
Principal Amount, Total |
|
|
|
2,737.4
|
|
|
|
Unamortized Discount, Net and Debt Issuance Costs |
|
|
|
(24.0)
|
|
|
|
Total Long-term Debt Outstanding |
|
|
|
2,713.4
|
2,441.9
|
|
|
Short-term Debt |
|
|
|
|
|
|
|
Notes Payable |
|
|
|
0.0
|
22.0
|
|
|
Accounts Receivable and Accrued Unbilled Revenue |
|
|
|
|
|
|
|
Accounts Receivable and Accrued Unbilled Revenues |
|
|
|
150.3
|
138.2
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
1,817.0
|
|
|
|
Proceeds on Sale of Receivables to AEP Credit |
|
|
|
|
|
|
|
Proceeds from Sale of Receivables to AEP Credit |
|
|
|
1,736.1
|
1,563.4
|
|
$ 1,531.7
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
|
794.5
|
353.7
|
|
3.3
|
Proceeds from Issuance of Long-term Debt |
|
|
|
$ 1,065.7
|
114.6
|
|
406.7
|
Maximum Percentage Debt to Capitalization |
|
|
|
67.50%
|
|
|
|
Dividend Restrictions |
|
|
|
$ 526.4
|
|
|
|
Dividends Paid on Common Stock |
|
|
|
(4.3)
|
(13.6)
|
|
$ (4.2)
|
Southwestern Electric Power Co [Member] | Utility [Member] |
|
|
|
|
|
|
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Borrowings from Money Pool |
|
|
|
200.1
|
187.5
|
|
|
Maximum Loans to Money Pool |
|
|
|
533.7
|
178.6
|
|
|
Average Borrowings from Money Pool |
|
|
|
143.2
|
95.5
|
|
|
Average Loans to Money Pool |
|
|
|
268.1
|
169.5
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
81.4
|
(118.7)
|
|
|
Authorized Short Term Borrowing Limit |
|
|
|
$ 350.0
|
$ 350.0
|
|
|
Maximum and Minimum Interest Rates |
|
|
|
|
|
|
|
Maximum Interest Rate |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate |
|
|
|
1.81%
|
0.92%
|
|
0.69%
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
2.31%
|
1.28%
|
|
0.79%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.00%
|
0.98%
|
|
0.90%
|
Southwestern Electric Power Co [Member] | Nonutility [Member] |
|
|
|
|
|
|
|
Maximum Interest Rate for Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.00%
|
Minimum Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.00%
|
Maximum Interest Rate For Funds Loaned |
|
|
|
2.97%
|
1.85%
|
|
1.02%
|
Minimum Interest Rate for Funds Loaned |
|
|
|
1.83%
|
0.00%
|
|
0.69%
|
Money Pool Participants' Money Pool Activity and Authorized Borrowing Limits |
|
|
|
|
|
|
|
Maximum Loans to Money Pool |
|
|
|
$ 2.0
|
$ 2.0
|
|
|
Average Loans to Money Pool |
|
|
|
2.0
|
2.0
|
|
|
Net Loans (Borrowings) to/from Money Pool |
|
|
|
$ 2.0
|
$ 2.0
|
|
|
Average Interest Rates for Funds Borrowed from and Loaned to Money Pool |
|
|
|
|
|
|
|
Average Interest Rate For Funds Borrowed |
|
|
|
0.00%
|
0.00%
|
|
0.00%
|
Average Interest Rate For Funds Loaned |
|
|
|
2.36%
|
1.32%
|
|
0.82%
|
Southwestern Electric Power Co [Member] | Loans Payable [Member] |
|
|
|
|
|
|
|
Short-term Debt |
|
|
|
|
|
|
|
Debt, Weighted Average Interest Rate |
[6] |
|
|
0.00%
|
2.92%
|
|
|
Senior Notes [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2048
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.36%
|
|
|
|
Senior Notes [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.15%
|
2.15%
|
|
|
Senior Notes [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
8.13%
|
8.13%
|
|
|
Senior Notes [Member] | AEP Texas Inc. [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2047
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.06%
|
|
|
|
Senior Notes [Member] | AEP Texas Inc. [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.40%
|
2.40%
|
|
|
Senior Notes [Member] | AEP Texas Inc. [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.76%
|
6.76%
|
|
|
Senior Notes [Member] | AEP Transmission Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2048
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.92%
|
|
|
|
Senior Notes [Member] | AEP Transmission Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.68%
|
2.68%
|
|
|
Senior Notes [Member] | AEP Transmission Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.52%
|
5.52%
|
|
|
Senior Notes [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2021
|
|
|
|
Maturity Date High |
|
|
|
2045
|
|
|
|
Weighted Average Interest Rate |
|
|
|
5.20%
|
|
|
|
Senior Notes [Member] | Appalachian Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.30%
|
3.30%
|
|
|
Senior Notes [Member] | Appalachian Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
7.00%
|
7.00%
|
|
|
Senior Notes [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2048
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.38%
|
|
|
|
Senior Notes [Member] | Indiana Michigan Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.20%
|
3.20%
|
|
|
Senior Notes [Member] | Indiana Michigan Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.05%
|
7.00%
|
|
|
Senior Notes [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2048
|
|
|
|
Weighted Average Interest Rate |
|
|
|
5.52%
|
|
|
|
Senior Notes [Member] | Ohio Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.15%
|
5.375%
|
|
|
Senior Notes [Member] | Ohio Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.60%
|
6.60%
|
|
|
Senior Notes [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2046
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.80%
|
|
|
|
Senior Notes [Member] | Public Service Co Of Oklahoma [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.05%
|
3.05%
|
|
|
Senior Notes [Member] | Public Service Co Of Oklahoma [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.625%
|
6.625%
|
|
|
Senior Notes [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2048
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.04%
|
|
|
|
Senior Notes [Member] | Southwestern Electric Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.75%
|
2.75%
|
|
|
Senior Notes [Member] | Southwestern Electric Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.20%
|
6.45%
|
|
|
Pollution Control Bonds [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[11] |
|
|
2018
|
|
|
|
Maturity Date High |
[11] |
|
|
2038
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.14%
|
|
|
|
Pollution Control Bonds [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.60%
|
1.54%
|
|
|
Pollution Control Bonds [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.30%
|
6.30%
|
|
|
Pollution Control Bonds [Member] | AEP Texas Inc. [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2020
|
|
|
|
Maturity Date High |
|
|
|
2030
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.39%
|
|
|
|
Pollution Control Bonds [Member] | AEP Texas Inc. [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.75%
|
1.75%
|
|
|
Pollution Control Bonds [Member] | AEP Texas Inc. [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.30%
|
6.30%
|
|
|
Pollution Control Bonds [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[11] |
|
|
2018
|
|
|
|
Maturity Date High |
[11] |
|
|
2038
|
|
|
|
Weighted Average Interest Rate |
|
|
|
2.64%
|
|
|
|
Pollution Control Bonds [Member] | Appalachian Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.70%
|
1.625%
|
|
|
Pollution Control Bonds [Member] | Appalachian Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.38%
|
5.38%
|
|
|
Pollution Control Bonds [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[11] |
|
|
2018
|
|
|
|
Maturity Date High |
[11] |
|
|
2025
|
|
|
|
Weighted Average Interest Rate |
|
|
|
2.49%
|
|
|
|
Pollution Control Bonds [Member] | Indiana Michigan Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.81%
|
1.75%
|
|
|
Pollution Control Bonds [Member] | Indiana Michigan Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.05%
|
2.75%
|
|
|
Pollution Control Bonds [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2038
|
|
|
|
Maturity Date High |
|
|
|
2038
|
|
|
|
Weighted Average Interest Rate |
|
|
|
5.80%
|
|
|
|
Pollution Control Bonds [Member] | Ohio Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.80%
|
5.80%
|
|
|
Pollution Control Bonds [Member] | Ohio Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.80%
|
5.80%
|
|
|
Pollution Control Bonds [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2020
|
|
|
|
Maturity Date High |
|
|
|
2020
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.45%
|
|
|
|
Pollution Control Bonds [Member] | Public Service Co Of Oklahoma [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.45%
|
4.45%
|
|
|
Pollution Control Bonds [Member] | Public Service Co Of Oklahoma [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.45%
|
4.45%
|
|
|
Pollution Control Bonds [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2019
|
|
|
|
Weighted Average Interest Rate |
|
|
|
1.60%
|
|
|
|
Pollution Control Bonds [Member] | Southwestern Electric Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.60%
|
1.60%
|
|
|
Pollution Control Bonds [Member] | Southwestern Electric Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.60%
|
4.95%
|
|
|
Pollution Control Bonds [Member] | Southwestern Electric Power Co [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
$ 54.0
|
|
|
|
|
Debt Instrument, Interest Rate, Stated Percentage |
|
|
1.60%
|
|
|
|
|
Due Date |
|
|
2019
|
|
|
|
|
Notes Payable, Other Payables [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2032
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.95%
|
|
|
|
Notes Payable, Other Payables [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.20%
|
2.03%
|
|
|
Notes Payable, Other Payables [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.37%
|
6.37%
|
|
|
Notes Payable, Other Payables [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2022
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.30%
|
|
|
|
Notes Payable, Other Payables [Member] | Indiana Michigan Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.20%
|
2.03%
|
|
|
Notes Payable, Other Payables [Member] | Indiana Michigan Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.38%
|
2.19%
|
|
|
Notes Payable, Other Payables [Member] | Indiana Michigan Power Co [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
$ 2.0
|
$ 15.0
|
|
|
|
|
Notes Payable, Other Payables [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2024
|
|
|
|
Maturity Date High |
|
|
|
2032
|
|
|
|
Weighted Average Interest Rate |
|
|
|
5.23%
|
|
|
|
Notes Payable, Other Payables [Member] | Southwestern Electric Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.58%
|
4.58%
|
|
|
Notes Payable, Other Payables [Member] | Southwestern Electric Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.37%
|
6.37%
|
|
|
Securitization Bonds [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[12] |
|
|
2018
|
|
|
|
Maturity Date High |
[12] |
|
|
2028
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.65%
|
|
|
|
Securitization Bonds [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.98%
|
1.98%
|
|
|
Securitization Bonds [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.31%
|
5.31%
|
|
|
Securitization Bonds [Member] | AEP Texas Inc. [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[12] |
|
|
2018
|
|
|
|
Maturity Date High |
[12] |
|
|
2024
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.95%
|
|
|
|
Securitization Bonds [Member] | AEP Texas Inc. [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.98%
|
1.98%
|
|
|
Securitization Bonds [Member] | AEP Texas Inc. [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
5.31%
|
5.31%
|
|
|
Securitization Bonds [Member] | AEP Texas Inc. [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
104.0
|
|
|
|
|
Securitization Bonds [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[12] |
|
|
2023
|
|
|
|
Maturity Date High |
[12] |
|
|
2028
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.06%
|
|
|
|
Securitization Bonds [Member] | Appalachian Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.008%
|
2.008%
|
|
|
Securitization Bonds [Member] | Appalachian Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.772%
|
3.772%
|
|
|
Securitization Bonds [Member] | Appalachian Power Co [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
12.0
|
|
|
|
|
|
Securitization Bonds [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
[12] |
|
|
2019
|
|
|
|
Maturity Date High |
[12] |
|
|
2019
|
|
|
|
Weighted Average Interest Rate |
|
|
|
2.049%
|
|
|
|
Securitization Bonds [Member] | Ohio Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.049%
|
2.049%
|
|
|
Securitization Bonds [Member] | Ohio Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
2.049%
|
2.049%
|
|
|
Securitization Bonds [Member] | Ohio Power Co [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Repayments of Long-term Debt |
|
|
23.0
|
|
|
|
|
Other Long Term Debt [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2059
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.72%
|
|
|
|
Other Long Term Debt [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.15%
|
1.15%
|
|
|
Other Long Term Debt [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
13.718%
|
13.718%
|
|
|
Other Long Term Debt [Member] | AEP Texas Inc. [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2059
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.94%
|
|
|
|
Other Long Term Debt [Member] | AEP Texas Inc. [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.94%
|
2.75%
|
|
|
Other Long Term Debt [Member] | AEP Texas Inc. [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.50%
|
4.50%
|
|
|
Other Long Term Debt [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2026
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.91%
|
|
|
|
Other Long Term Debt [Member] | Appalachian Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.74%
|
2.73%
|
|
|
Other Long Term Debt [Member] | Appalachian Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
13.718%
|
13.718%
|
|
|
Other Long Term Debt [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2018
|
|
|
|
Maturity Date High |
|
|
|
2025
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.80%
|
|
|
|
Other Long Term Debt [Member] | Indiana Michigan Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.66%
|
2.82%
|
|
|
Other Long Term Debt [Member] | Indiana Michigan Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
6.00%
|
6.00%
|
|
|
Other Long Term Debt [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2028
|
|
|
|
Maturity Date High |
|
|
|
2028
|
|
|
|
Weighted Average Interest Rate |
|
|
|
1.15%
|
|
|
|
Other Long Term Debt [Member] | Ohio Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.15%
|
1.15%
|
|
|
Other Long Term Debt [Member] | Ohio Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
1.15%
|
1.15%
|
|
|
Other Long Term Debt [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2019
|
|
|
|
Maturity Date High |
|
|
|
2027
|
|
|
|
Weighted Average Interest Rate |
|
|
|
3.70%
|
|
|
|
Other Long Term Debt [Member] | Public Service Co Of Oklahoma [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.00%
|
2.584%
|
|
|
Other Long Term Debt [Member] | Public Service Co Of Oklahoma [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.72%
|
3.00%
|
|
|
Other Long Term Debt [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Maturity Date Low |
|
|
|
2020
|
|
|
|
Maturity Date High |
|
|
|
2028
|
|
|
|
Weighted Average Interest Rate |
|
|
|
4.03%
|
|
|
|
Other Long Term Debt [Member] | Southwestern Electric Power Co [Member] | Minimum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
3.75%
|
2.925%
|
|
|
Other Long Term Debt [Member] | Southwestern Electric Power Co [Member] | Maximum [Member] |
|
|
|
|
|
|
|
Long- term Debt by Type of Debt and Maturity |
|
|
|
|
|
|
|
Interest Rate |
|
|
|
4.68%
|
4.28%
|
|
|
Other Long Term Debt [Member] | Transource Energy [Member] | Subsequent Event [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Proceeds from Issuance of Long-term Debt |
|
$ 3.0
|
$ 3.0
|
|
|
|
|
Due Date |
|
|
2020
|
|
|
|
|
July 2020 [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Commitment From Bank Conduits To Finance Receivables |
|
|
|
$ 125.0
|
|
|
|
July 2021 [Member] |
|
|
|
|
|
|
|
Financing Activities (Textuals) |
|
|
|
|
|
|
|
Commitment From Bank Conduits To Finance Receivables |
|
|
|
625.0
|
|
|
|
Servicing Contracts [Member] | Appalachian Power Co [Member] |
|
|
|
|
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
7.0
|
$ 5.6
|
|
$ 6.7
|
Servicing Contracts [Member] | Indiana Michigan Power Co [Member] |
|
|
|
|
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
9.2
|
6.7
|
|
7.1
|
Servicing Contracts [Member] | Ohio Power Co [Member] |
|
|
|
|
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
26.3
|
21.7
|
|
28.9
|
Servicing Contracts [Member] | Public Service Co Of Oklahoma [Member] |
|
|
|
|
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
7.9
|
7.0
|
|
6.2
|
Servicing Contracts [Member] | Southwestern Electric Power Co [Member] |
|
|
|
|
|
|
|
Fees Paid to AEP Credit for Customer Accounts Receivable Sold |
|
|
|
|
|
|
|
Revenue from Contracts with Customers |
|
|
|
$ 8.9
|
$ 7.2
|
|
$ 6.9
|
|
|