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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)
(as adjusted)
Property, Plant and Equipment Under Finance Leases:
Generation$120.9 $— $— $41.1 $28.0 $— $0.6 $25.9 
Other Property, Plant and Equipment321.4 53.7 — 20.1 40.6 32.7 25.2 58.3 
Total Property, Plant and Equipment442.3 53.7 — 61.2 68.6 32.7 25.8 84.2 
Accumulated Amortization229.6 23.6 — 31.9 34.8 13.8 10.8 54.6 
Net Property, Plant and Equipment Under Finance Leases
$212.7 $30.1 $— $29.3 $33.8 $18.9 $15.0 $29.6 
Obligations Under Finance Leases:
Noncurrent Liability$168.4 $23.1 $— $21.6 $27.1 $14.2 $11.7 $31.3 
Liability Due Within One Year57.3 7.0 — 7.7 6.9 4.7 3.3 10.9 
Total Obligations Under Finance Leases
$225.7 $30.1 $— $29.3 $34.0 $18.9 $15.0 $42.2 

December 31, 2021AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
(as adjusted)
Property, Plant and Equipment Under Finance Leases:
Generation$389.9 $— $— $42.8 $156.8 $— $0.6 $34.3 
Other Property, Plant and Equipment328.1 50.7 — 20.4 42.1 32.1 23.9 55.7 
Total Property, Plant and Equipment718.0 50.7 — 63.2 198.9 32.1 24.5 90.0 
Accumulated Amortization225.0 19.9 — 27.5 38.2 12.8 9.2 47.8 
Net Property, Plant and Equipment Under Finance Leases
$493.0 $30.8 $— $35.7 $160.7 $19.3 $15.3 $42.2 
Obligations Under Finance Leases:
Noncurrent Liability$198.2 $24.2 $— $28.1 $31.7 $14.9 $12.3 $38.9 
Liability Due Within One Year305.3 6.6 — 7.6 130.5 4.4 3.0 10.8 
Total Obligations Under Finance Leases
$503.5 $30.8 $— $35.7 $162.2 $19.3 $15.3 $49.7 
Operating Lease Assets and Related Obligations
December 31, 2022AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
(as adjusted)
Operating Lease Assets
$645.5 $94.7 $2.7 $73.6 $64.3 $73.8 $106.1 $123.4 
Obligations Under Operating Leases:
Noncurrent Liability$552.5 $67.8 $1.5 $59.1 $48.9 $60.3 $99.3 $120.2 
Liability Due Within One Year113.6 28.6 1.3 15.0 16.0 13.5 8.9 8.4 
Total Obligations Under Operating Leases
$666.1 $96.4 $2.8 $74.1 $64.9 $73.8 $108.2 $128.6 

December 31, 2021AEPAEP TexasAEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
(as adjusted)
Operating Lease Assets
$589.0 $73.6 $2.0 $66.9 $63.5 $81.2 $68.9 $80.1 
Obligations Under Operating Leases:
Noncurrent Liability$501.4 $61.3 $1.3 $52.4 $48.9 $68.6 $62.2 $77.7 
Liability Due Within One Year99.8 14.0 0.9 15.1 15.5 13.1 6.9 8.1 
Total Obligations Under Operating Leases
$601.2 $75.3 $2.2 $67.5 $64.4 $81.7 $69.1 $85.8 
Finance Lease Liabilities Rolling Future Minimum Lease Payments
Finance LeasesAEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
(as adjusted)
2023$67.9 $8.3 $— $9.6 $9.2 $5.4 $3.8 $12.4 
202471.5 7.2 — 8.8 12.1 4.6 3.3 16.5 
202541.0 5.5 — 7.5 6.3 3.2 2.5 6.1 
202625.0 4.4 — 2.9 3.9 2.6 2.2 2.8 
202719.3 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
257.3 34.4 — 33.4 42.5 21.3 17.3 45.8 
Less: Imputed Interest
31.6 4.3 — 4.1 8.5 2.4 2.3 3.6 
Estimated Present Value of Future Minimum Lease Payments$225.7 $30.1 $— $29.3 $34.0 $18.9 $15.0 $42.2 
Operating Lease Liabilities Rolling Future Minimum Lease Payments
Operating LeasesAEPAEP Texas AEPTCoAPCoI&MOPCoPSOSWEPCo
(in millions)
(as adjusted)
2023$138.7 $32.3 $1.4 $17.5 $18.8 $16.4 $11.5 $14.4 
2024125.9 29.7 0.9 14.6 17.7 14.9 10.7 12.7 
202586.7 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 2027352.2 11.7 — 19.2 9.8 15.7 116.4 141.8 
Total Future Minimum Lease Payments
844.6 106.0 2.9 82.5 71.3 82.9 164.5 199.3 
Less: Imputed Interest178.5 9.6 0.1 8.4 6.4 9.1 56.3 70.7 
Estimated Present Value of Future Minimum Lease Payments$666.1 $96.4 $2.8 $74.1 $64.9 $73.8 $108.2 $128.6 
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