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Leases (Tables)
 12 Months Ended
Dec. 31, 2022
Lease Rental Costs
Year Ended December 31, 2022AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Operating Lease Cost
$157.5 $18.4 $1.1 $17.9 $29.5 $16.9 $11.8 $15.3 
Finance Lease Cost:
Amortization of Right-of-Use Assets
205.5 6.8 — 7.9 78.7 4.9 3.2 10.8 
Interest on Lease Liabilities
13.4 1.3 — 2.0 3.1 0.8 0.6 2.1 
Total Lease Rental Costs (a)$376.4 $26.5 $1.1 $27.8 $111.3 $22.6 $15.6 $28.2 
Year Ended December 31, 2021AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Operating Lease Cost
$275.3 $18.4 $1.7 $19.3 $90.2 $19.0 $8.7 $12.1 
Finance Lease Cost:
Amortization of Right-of-Use Assets
74.7 6.7 — 7.7 12.9 4.9 3.2 11.0 
Interest on Lease Liabilities
14.4 1.4 — 2.4 3.0 0.8 0.6 2.5 
Total Lease Rental Costs (a)$364.4 $26.5 $1.7 $29.4 $106.1 $24.7 $12.5 $25.6 
Year Ended December 31, 2020AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Operating Lease Cost
$279.6 $17.4 $2.6 $19.1 $101.5 $17.1 $7.8 $9.4 
Finance Lease Cost:
Amortization of Right-of-Use Assets
61.9 6.3 — 7.4 6.5 4.7 3.5 10.9 
Interest on Lease Liabilities
15.4 1.5 — 2.7 3.1 0.9 0.7 2.2 
Total Lease Rental Costs (a)$356.9 $25.2 $2.6 $29.2 $111.1 $22.7 $12.0 $22.5 

(a)Excludes variable and short-term lease costs, which were immaterial.
Supplemental Balance Sheet Information Related to Leases
December 31, 2022AEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
Weighted-Average Remaining Lease Term (years):
Operating Leases
12.694.332.055.295.795.9823.9023.55
Finance Leases
4.615.390.004.254.765.276.024.13
Weighted-Average Discount Rate:
Operating Leases
3.54 %4.15 %1.96 %3.61 %3.62 %3.73 %3.43 %3.41 %
Finance Leases
5.76 %4.75 %— %7.09 %8.99 %4.53 %4.63 %4.80 %

December 31, 2021AEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
Weighted-Average Remaining Lease Term (years):
Operating Leases
10.395.912.955.685.876.6920.8920.24
Finance Leases
2.955.510.004.972.105.546.184.53
Weighted-Average Discount Rate:
Operating Leases
3.35 %3.53 %0.90 %3.42 %3.46 %3.56 %3.35 %3.34 %
Finance Leases
3.26 %4.31 %— %7.16 %3.02 %4.19 %4.23 %4.68 %

Year Ended December 31, 2022AEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating Cash Flows Used for Operating Leases
$155.1 $18.3 $1.0 $17.9 $29.7 $17.5 $10.5 $13.7 
Operating Cash Flows Used for Finance Leases
13.6 1.3 — 2.0 3.2 0.8 0.6 2.1 
Financing Cash Flows Used for Finance Leases
309.5 6.8 — 7.9 130.7 4.9 3.2 10.8 
Non-cash Acquisitions Under Operating Leases$191.4 $36.7 $1.7 $23.1 $19.1 $8.4 $46.0 $53.6 

Year Ended December 31, 2021AEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Cash paid for amounts included in the measurement of lease liabilities:
Operating Cash Flows Used for Operating Leases
$279.9 $18.0 $1.6 $19.3 $92.9 $19.0 $8.7 $11.6 
Operating Cash Flows Used for Finance Leases
14.3 1.4 — 2.4 2.9 0.8 0.6 2.5 
Financing Cash Flows Used for Finance Leases
64.0 6.7 — 7.7 6.8 4.9 3.2 10.9 
Non-cash Acquisitions Under Operating Leases$117.0 $4.4 $2.1 $4.2 $2.6 $4.2 $33.4 $42.9 
Property, Plant and Equipment and Related Obligations Under Finance Leases
December 31, 2022AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Property, Plant and Equipment Under Finance Leases:
Generation$120.5 $— $— $41.1 $28.0 $— $0.6 $25.9 
Other Property, Plant and Equipment321.2 53.7 — 20.1 40.6 32.7 25.2 58.3 
Total Property, Plant and Equipment441.7 53.7 — 61.2 68.6 32.7 25.8 84.2 
Accumulated Amortization229.3 23.6 — 31.9 34.8 13.8 10.8 54.6 
Net Property, Plant and Equipment Under Finance Leases
$212.4 (a)$30.1 $— $29.3 $33.8 $18.9 $15.0 $29.6 
Obligations Under Finance Leases:
Noncurrent Liability$168.2 $23.1 $— $21.6 $27.1 $14.2 $11.7 $31.3 
Liability Due Within One Year57.2 7.0 — 7.7 6.9 4.7 3.3 10.9 
Total Obligations Under Finance Leases
$225.4 (b)$30.1 $— $29.3 $34.0 $18.9 $15.0 $42.2 

December 31, 2021AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Property, Plant and Equipment Under Finance Leases:
Generation$388.8 $— $— $42.8 $156.8 $— $0.6 $34.3 
Other Property, Plant and Equipment323.8 50.7 — 20.4 42.1 32.1 23.9 55.7 
Total Property, Plant and Equipment712.6 50.7 — 63.2 198.9 32.1 24.5 90.0 
Accumulated Amortization222.4 19.9 — 27.5 38.2 12.8 9.2 47.8 
Net Property, Plant and Equipment Under Finance Leases
$490.2 (a)$30.8 $— $35.7 $160.7 $19.3 $15.3 $42.2 
Obligations Under Finance Leases:
Noncurrent Liability$196.1 $24.2 $— $28.1 $31.7 $14.9 $12.3 $38.9 
Liability Due Within One Year304.6 6.6 — 7.6 130.5 4.4 3.0 10.8 
Total Obligations Under Finance Leases
$500.7 (b)$30.8 $— $35.7 $162.2 $19.3 $15.3 $49.7 

(a)    Amount excludes $369 thousand and $3 million of Net Property, Plant and Equipment Under Finance Leases classified as Assets Held for Sale on the balance sheet for the years ended December 31, 2022 and 2021, respectively. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
(b)    Amount excludes $369 thousand and $3 million of Obligations Under Finance Leases classified as Liabilities Held for Sale on the balance sheet for the years ended December 31, 2022 and 2021, respectively. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
Operating Lease Assets and Related Obligations
December 31, 2022AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Operating Lease Assets
$645.0 (a)$94.7 $2.7 $73.6 $64.3 $73.8 $106.1 $123.4 
Obligations Under Operating Leases:
Noncurrent Liability$552.1 $67.8 $1.5 $59.1 $48.9 $60.3 $99.3 $120.2 
Liability Due Within One Year113.4 28.6 1.3 15.0 16.0 13.5 8.9 8.4 
Total Obligations Under Operating Leases
$665.5 (b)$96.4 $2.8 $74.1 $64.9 $73.8 $108.2 $128.6 

December 31, 2021AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
Operating Lease Assets
$578.3 (a)$73.6 $2.0 $66.9 $63.5 $81.2 $68.9 $80.1 
Obligations Under Operating Leases:
Noncurrent Liability$492.8 $61.3 $1.3 $52.4 $48.9 $68.6 $62.2 $77.7 
Liability Due Within One Year97.6 14.0 0.9 15.1 15.5 13.1 6.9 8.1 
Total Obligations Under Operating Leases
$590.4 (b)$75.3 $2.2 $67.5 $64.4 $81.7 $69.1 $85.8 

(a)    Amount excludes $528 thousand and $11 million of Operating Lease Assets classified as Assets Held for Sale on the balance sheet for the years ended December 31, 2022 and 2021, respectively. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
(b)    Amount excludes $578 thousand and $11 million of Obligations Under Operating Leases classified as Liabilities Held for Sale on the balance sheet for the years ended December 31, 2022 and 2021, respectively. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
Finance Lease Liabilities Rolling Future Minimum Lease Payments
Finance LeasesAEP (a)AEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
2023$67.8 $8.3 $— $9.6 $9.2 $5.4 $3.8 $12.4 
202471.4 7.2 — 8.8 12.1 4.6 3.3 16.5 
202540.9 5.5 — 7.5 6.3 3.2 2.5 6.1 
202624.9 4.4 — 2.9 3.9 2.6 2.2 2.8 
202719.2 3.5 — 1.8 3.4 2.1 1.8 2.4 
After 202732.6 5.5 — 2.8 7.6 3.4 3.7 5.6 
Total Future Minimum Lease Payments
256.8 34.4 — 33.4 42.5 21.3 17.3 45.8 
Less: Imputed Interest
31.4 4.3 — 4.1 8.5 2.4 2.3 3.6 
Estimated Present Value of Future Minimum Lease Payments$225.4 $30.1 $— $29.3 $34.0 $18.9 $15.0 $42.2 
(a)    Amount excludes $369 thousand of Obligations Under Finance Leases classified as Liabilities Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
Operating Lease Liabilities Rolling Future Minimum Lease Payments
Operating LeasesAEP (a)AEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
2023$138.5 $32.3 $1.4 $17.5 $18.8 $16.4 $11.5 $14.4 
2024125.7 29.7 0.9 14.6 17.7 14.9 10.7 12.7 
202586.6 13.1 0.4 11.8 9.2 13.2 9.5 11.4 
202675.5 10.9 0.2 10.3 8.3 12.0 8.6 10.2 
202765.6 8.3 — 9.1 7.5 10.7 7.8 8.8 
After 2027352.0 11.7 — 19.2 9.8 15.7 116.4 141.8 
Total Future Minimum Lease Payments
843.9 106.0 2.9 82.5 71.3 82.9 164.5 199.3 
Less: Imputed Interest178.4 9.6 0.1 8.4 6.4 9.1 56.3 70.7 
Estimated Present Value of Future Minimum Lease Payments$665.5 $96.4 $2.8 $74.1 $64.9 $73.8 $108.2 $128.6 

(a)    Amount excludes $578 thousand of Obligations Under Operating Leases classified as Liabilities Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 7 for additional information.
Maximum Potential Loss
CompanyMaximum
Potential Loss
(in millions)
AEP$46.0 
AEP Texas11.1 
APCo6.1 
I&M4.4 
OPCo7.6 
PSO4.8 
SWEPCo5.3