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Leases (Tables)
 12 Months Ended
Dec. 31, 2015
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4
Rockport Lease [Member]  
Future Minimum Lease Payments
Future Minimum Lease Payments
 
AEP (a)
 
I&M
 
 
(in millions)
2016
 
$
147.8

 
$
73.9

2017
 
147.8

 
73.9

2018
 
147.8

 
73.9

2019
 
147.8

 
73.9

2020
 
147.8

 
73.9

Later Years
 
295.0

 
147.5

Total Future Minimum Lease Payments
 
$
1,034.0

 
$
517.0
Nuclear Fuel Lease [Member]  
Future Minimum Lease Payments
Future Minimum Lease Payments
 
I&M
 
 
(in millions)
2016
 
$
26.9

2017
 
5.8

2018
 
2.4

Total Future Minimum Lease Payments
 
$
35.1
Appalachian Power Co [Member]  
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4
Indiana Michigan Power Co [Member]  
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4
Indiana Michigan Power Co [Member] | Rockport Lease [Member]  
Future Minimum Lease Payments
Future Minimum Lease Payments
 
AEP (a)
 
I&M
 
 
(in millions)
2016
 
$
147.8

 
$
73.9

2017
 
147.8

 
73.9

2018
 
147.8

 
73.9

2019
 
147.8

 
73.9

2020
 
147.8

 
73.9

Later Years
 
295.0

 
147.5

Total Future Minimum Lease Payments
 
$
1,034.0

 
$
517.0
Indiana Michigan Power Co [Member] | Nuclear Fuel Lease [Member]  
Future Minimum Lease Payments
Future Minimum Lease Payments
 
I&M
 
 
(in millions)
2016
 
$
26.9

2017
 
5.8

2018
 
2.4

Total Future Minimum Lease Payments
 
$
35.1
Ohio Power Co [Member]  
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4
Public Service Co Of Oklahoma [Member]  
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4
Southwestern Electric Power Co [Member]  
Lease Rental Costs
Year Ended December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
292.6

 
$
16.4

 
$
88.3

 
$
7.6

 
$
5.4

 
$
6.7

Amortization of Capital Leases
 
108.5

 
5.6

 
40.7

 
3.9

 
3.5

 
13.7

Interest on Capital Leases
 
25.1

 
0.8

 
3.3

 
0.6

 
0.7

 
6.2

Total Lease Rental Costs
 
$
426.2

(a)
$
22.8

 
$
132.3

 
$
12.1

 
$
9.6

 
$
26.6


Year Ended December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
303.9

 
$
18.3

 
$
93.4

 
$
6.6

 
$
3.2

 
$
5.5

Amortization of Capital Leases
 
109.4

 
5.5

 
44.4

 
5.7

 
4.2

 
14.9

Interest on Capital Leases
 
26.1

 
1.0

 
2.8

 
1.2

 
0.7

 
7.4

Total Lease Rental Costs
 
$
439.4

(a)
$
24.8

 
$
140.6

 
$
13.5

 
$
8.1

 
$
27.8


Year Ended December 31, 2013
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Net Lease Expense on Operating Leases
 
$
326.6

 
$
17.5

 
$
95.6

 
$
57.8

 
$
4.1

 
$
6.3

Amortization of Capital Leases
 
73.9

 
6.3

 
11.3

 
7.8

 
4.1

 
15.5

Interest on Capital Leases
 
28.3

 
1.4

 
1.9

 
4.1

 
0.8

 
8.1

Total Lease Rental Costs
 
$
428.8

(a)
$
25.2

 
$
108.8

 
$
69.7

 
$
9.0

 
$
29.9



(a)
Amounts include lease expenses related to AEPRO that have been classified as Other Operation Expense from Discontinued Operations on the statements of income in the amounts of $89 million, $96 million and $103 million for the Years Ended December 31, 2015, 2014 and 2013, respectively. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Property, Plant and Equipment and Related Obligations Under Capital Leases
December 31, 2015
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
128.2

 
$
43.4

 
$
14.5

 
$
—

 
$
9.6

 
$
34.5

Other Property, Plant and Equipment
 
439.3

 
17.6

 
68.2

 
23.4

 
18.6

 
165.1

Total Property, Plant and Equipment
 
567.5

 
61.0

 
82.7

 
23.4

 
28.2

 
199.6

Accumulated Amortization
 
214.1

 
15.6

 
19.7

 
10.2

 
13.6

 
91.3

Net Property, Plant and Equipment Under Capital Leases
 
$
353.4

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
108.3

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
247.3

 
$
39.1

 
$
30.2

 
$
9.3

 
$
10.9

 
$
75.6

Liability Due Within One Year
 
96.2

 
6.3

 
32.8

 
3.9

 
3.7

 
21.9

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

December 31, 2014
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
Property, Plant and Equipment Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Generation
 
$
104.4

 
$
14.1

 
$
18.7

 
$
—

 
$
9.6

 
$
35.4

Other Property, Plant and Equipment
 
683.0

 
19.4

 
100.4

 
22.6

 
16.5

 
159.5

Total Property, Plant and Equipment
 
787.4

 
33.5

 
119.1

 
22.6

 
26.1

 
194.9

Accumulated Amortization
 
240.0

 
14.0

 
15.9

 
8.0

 
11.8

 
80.1

Net Property, Plant and Equipment Under Capital Leases
 
$
547.4

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
114.8

 
 
 
 
 
 
 
 
 
 
 
 
 
Obligations Under Capital Leases:
 
 
 
 
 
 
 
 
 
 
 
 
Noncurrent Liability
 
$
440.4

 
$
14.4

 
$
61.1

 
$
11.0

 
$
10.9

 
$
91.0

Liability Due Within One Year
 
111.4

 
5.1

 
42.1

 
3.6

 
3.4

 
17.6

 
 
 
 
 
 
 
 
 
 
 
 
 
Total Obligations Under Capital Leases
 
$
551.8

(a)
$
19.5

 
$
103.2

 
$
14.6

 
$
14.3

 
$
108.6



(a)
Amounts include Net Property Under Capital Leases that have been classified as Assets from Discontinued Operations in the amount of $179 million and Total Obligations Under Capital Leases that have been classified as Liabilities from Discontinued Operations in the amount of $189 million on the December 31, 2014 balance sheet. See “AEPRO (Corporate and Other)” section of Note 7 for additional information.
Future Minimum Lease Payments
Capital Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
112.9

 
$
9.8

 
$
36.6

 
$
4.4

 
$
4.3

 
$
26.1

2017
 
76.2

 
9.4

 
12.1

 
4.0

 
4.1

 
18.2

2018
 
54.9

 
8.4

 
6.5

 
3.1

 
2.9

 
12.7

2019
 
38.7

 
6.4

 
3.0

 
1.0

 
1.6

 
11.4

2020
 
27.7

 
5.7

 
2.7

 
0.6

 
1.0

 
9.7

Later Years
 
110.7

 
26.5

 
20.3

 
1.4

 
2.6

 
40.3

Total Future Minimum Lease Payments
 
421.1

 
66.2

 
81.2

 
14.5

 
16.5

 
118.4

Less Estimated Interest Element
 
77.6

 
20.8

 
18.2

 
1.3

 
1.9

 
20.9

Estimated Present Value of Future Minimum Lease Payments
 
$
343.5

 
$
45.4

 
$
63.0

 
$
13.2

 
$
14.6

 
$
97.5

 
 
 
 
 
 
 
 
 
 
 
 
 
Noncancelable Operating Leases
 
AEP
 
APCo
 
I&M
 
OPCo
 
PSO
 
SWEPCo
 
 
(in millions)
2016
 
$
239.1

 
$
15.6

 
$
92.7

 
$
8.8

 
$
4.8

 
$
6.3

2017
 
228.7

 
15.2

 
90.9

 
8.3

 
3.9

 
5.3

2018
 
219.9

 
13.8

 
89.7

 
6.9

 
3.5

 
4.8

2019
 
211.2

 
12.4

 
88.5

 
5.4

 
2.9

 
4.5

2020
 
202.8

 
11.8

 
85.1

 
4.5

 
2.4

 
4.2

Later Years
 
452.3

 
36.0

 
173.8

 
20.2

 
4.7

 
16.5

Total Future Minimum Lease Payments
 
$
1,554.0

 
$
104.8

 
$
620.7

 
$
54.1

 
$
22.2

 
$
41.6
Maximum Potential Loss
Company
 
Maximum
Potential Loss
 
 
(in millions)
AEP
 
$
33.4

APCo
 
4.8

I&M
 
3.2

OPCo
 
5.3

PSO
 
2.8

SWEPCo
 
3.4