Condensed Consolidated Balance Sheets - USD ($) $ in Millions		Mar. 31, 2022	Dec. 31, 2021
Current Assets
Cash and Cash Equivalents		$ 675.6	$ 403.4
Restricted Cash		49.9	48.0
Other Temporary Investments		208.5	220.4
Accounts Receivable:
Customers		743.1	720.9
Accrued Unbilled Revenues		205.8	204.4
Pledged Accounts Receivable - AEP Credit		990.2	1,038.0
Miscellaneous		51.9	33.9
Allowance for Uncollectible Accounts		(54.4)	(55.6)
Total Accounts Receivable		1,936.6	1,941.6
Fuel		270.4	307.9
Materials and Supplies		696.4	681.3
Risk Management Assets		310.7	194.4
Accrued Tax Benefits		67.5	121.5
Assets Held for Sale		2,972.6	2,919.7
Regulatory Asset for Under-Recovered Fuel Costs		840.7	647.8
Prepayments and Other Current Assets		239.1	323.2
TOTAL CURRENT ASSETS		8,268.0	7,809.2
Property, Plant and Equipment
Generation		24,386.6	23,088.1
Transmission		30,305.9	29,911.1
Distribution		24,759.2	24,440.0
Other Property, Plant and Equipment		5,756.0	5,682.9
Construction Work in Progress		3,967.3	3,684.3
Total Property, Plant and Equipment		89,175.0	86,806.4
Accumulated Depreciation and Amortization		21,297.0	20,805.1
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		67,878.0	66,001.3
Other Noncurrent Assets
Regulatory Assets		4,087.6	4,142.3
Securitized Assets		527.6	552.8
Spent Nuclear Fuel and Decommissioning Trusts		3,678.4	3,867.0
Goodwill		52.5	52.5
Long-term Risk Management Assets		260.8	267.0
Operating Lease Assets		646.2	578.3
Deferred Charges and Other Noncurrent Assets		4,432.3	4,398.3
TOTAL OTHER NONCURRENT ASSETS		13,685.4	13,858.2
TOTAL ASSETS	[1]	89,831.4	87,668.7
Current Liabilities
Accounts Payable		1,694.3	2,054.6
Short-term Debt:
Securitized Debt for Receivables - AEP Credit	[2]	750.0	750.0
Other Short-term Debt		2,630.3	1,864.0
Total Short-term Debt		3,380.3	2,614.0
Long-term Debt Due Within One Year	[3]	3,008.4	2,153.8
Risk Management Liabilities		130.0	75.4
Customer Deposits		356.2	321.6
Accrued Taxes		1,485.2	1,586.4
Accrued Interest		339.1	273.2
Obligations Under Operating Leases		95.0	97.6
Liabilities Held for Sale		1,873.7	1,880.9
Other Current Liabilities		1,206.4	1,369.2
TOTAL CURRENT LIABILITIES		13,568.6	12,426.7
Noncurrent Liabilities
Long-term Debt	[4]	30,855.7	31,300.7
Long-term Risk Management Liabilities		300.4	230.3
Deferred Income Taxes		8,324.9	8,202.5
Regulatory Liabilities and Deferred Investment Tax Credits		8,486.6	8,686.3
Asset Retirement Obligations		2,750.0	2,676.2
Employee Benefits and Pension Obligations		315.3	328.4
Obligations Under Operating Leases		563.3	492.8
Deferred Credits and Other Noncurrent Liabilities		573.4	601.3
TOTAL NONCURRENT LIABILITIES		52,169.6	52,518.5
TOTAL LIABILITIES		65,738.2	64,945.2
Rate Matters
Commitments and Contingencies
Contingently Reedemable Performance Share Awards		55.1	43.3
Total Mezzanine Equity		55.1	43.3
Equity
Common Stock		3,411.1	3,408.7
Paid-in Capital		7,964.5	7,172.6
Retained Earnings		11,985.1	11,667.1
Accumulated Other Comprehensive Income (Loss)		430.6	184.8
TOTAL COMMON SHAREHOLDER'S EQUITY		23,791.3	22,433.2
Noncontrolling Interests		246.8	247.0
TOTAL EQUITY		24,038.1	22,680.2
TOTAL LIABILITIES AND EQUITY		$ 89,831.4	$ 87,668.7
Common Stock, No Par Value		$ 6.50	$ 6.50
Common Stock, Shares Authorized		600,000,000	600,000,000
Common Stock, Shares, Issued		524,777,416	524,416,175
Treasury Stock, Shares		11,233,240	20,204,160
Commodity [Member]
Equity
Cross Default Provisions Maximum Third Party Obligation Amount		$ 50.0
Subsidiaries [Member]
Current Assets
Restricted Cash		49.9	$ 48.0
Other Temporary Investments		203.3	214.8
Short-term Debt:
Long-term Debt Due Within One Year		238.4	190.5
Noncurrent Liabilities
Long-term Debt		743.5	840.5
AEP Texas Inc. [Member]
Current Assets
Cash and Cash Equivalents		0.1	0.1
Restricted Cash		39.9	30.4
Advances to Affiliates		6.8	6.9
Accounts Receivable:
Customers		149.4	123.4
Affiliated Companies - Contracts with Customers		6.1	7.9
Accrued Unbilled Revenues		73.9	77.9
Miscellaneous		0.1	0.0
Allowance for Uncollectible Accounts		(4.1)	(4.0)
Total Accounts Receivable		225.4	205.2
Materials and Supplies		78.8	73.9
Risk Management Assets		0.2	0.0
Accrued Tax Benefits		16.3	24.8
Prepayments and Other Current Assets		16.8	5.9
TOTAL CURRENT ASSETS		384.3	347.2
Property, Plant and Equipment
Transmission		5,963.6	5,849.9
Distribution		4,995.4	4,917.2
Other Property, Plant and Equipment		982.7	961.1
Construction Work in Progress		586.0	551.3
Total Property, Plant and Equipment		12,527.7	12,279.5
Accumulated Depreciation and Amortization		1,685.6	1,644.1
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		10,842.1	10,635.4
Other Noncurrent Assets
Regulatory Assets		277.7	275.2
Securitized Assets		348.9	367.6
Deferred Charges and Other Noncurrent Assets		289.6	211.3
TOTAL OTHER NONCURRENT ASSETS		916.2	854.1
TOTAL ASSETS		12,142.6	11,836.7
Current Liabilities
Advances from Affiliates		262.2	26.9
Accounts Payable		237.3	306.3
Affiliated Companies		30.2	32.5
Short-term Debt:
Long-term Debt Due Within One Year		841.3	716.0
Accrued Taxes		122.7	93.3
Accrued Interest		59.0	44.7
Obligations Under Operating Leases		14.0	14.0
Other Current Liabilities		113.8	78.0
TOTAL CURRENT LIABILITIES		1,680.5	1,311.7
Noncurrent Liabilities
Long-term Debt		4,329.3	4,464.8
Deferred Income Taxes		1,096.2	1,088.9
Regulatory Liabilities and Deferred Investment Tax Credits		1,248.6	1,242.0
Obligations Under Operating Leases		58.5	61.3
Deferred Credits and Other Noncurrent Liabilities		65.4	73.8
TOTAL NONCURRENT LIABILITIES		6,798.0	6,930.8
TOTAL LIABILITIES		8,478.5	8,242.5
Rate Matters
Commitments and Contingencies
Equity
Paid-in Capital		1,553.9	1,553.9
Retained Earnings		2,116.4	2,046.8
Accumulated Other Comprehensive Income (Loss)		(6.2)	(6.5)
TOTAL EQUITY		3,664.1	3,594.2
TOTAL LIABILITIES AND EQUITY		12,142.6	11,836.7
AEP Texas Inc. [Member] | AEP Texas Transition Funding and Restoration Funding [Member]
Current Assets
Restricted Cash		39.9	30.4
Other Noncurrent Assets
Securitized Assets		348.9	367.6
Short-term Debt:
Long-term Debt Due Within One Year		91.3	91.0
Accrued Interest		2.7	2.3
Noncurrent Liabilities
Long-term Debt		302.2	313.7
AEP Transmission Co [Member]
Current Assets
Cash and Cash Equivalents		0.0	0.0
Advances to Affiliates		3.1	27.2
Accounts Receivable:
Customers		29.5	22.5
Affiliated Companies - Contracts with Customers		110.6	96.1
Total Accounts Receivable		140.1	118.6
Materials and Supplies		10.1	9.3
Assets Held for Sale		169.9	167.9
Prepayments and Other Current Assets		2.4	8.3
TOTAL CURRENT ASSETS		325.6	331.3
Property, Plant and Equipment
Transmission		11,037.6	10,886.3
Other Property, Plant and Equipment		428.9	427.4
Construction Work in Progress		1,527.8	1,394.8
Total Property, Plant and Equipment		12,994.3	12,708.5
Accumulated Depreciation and Amortization		830.5	772.8
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		12,163.8	11,935.7
Other Noncurrent Assets
Regulatory Assets		6.4	8.5
Deferred Property Taxes		214.4	245.7
Deferred Charges and Other Noncurrent Assets		4.2	3.2
TOTAL OTHER NONCURRENT ASSETS		225.0	257.4
TOTAL ASSETS	[5]	12,714.4	12,524.4
Current Liabilities
Advances from Affiliates		322.2	124.0
Accounts Payable		295.9	460.1
Affiliated Companies		77.2	69.9
Short-term Debt:
Long-term Debt Due Within One Year		104.0	104.0
Accrued Taxes		420.2	479.0
Accrued Interest		48.3	28.4
Obligations Under Operating Leases		1.1	0.9
Liabilities Held for Sale		27.6	27.6
Other Current Liabilities		19.3	3.0
TOTAL CURRENT LIABILITIES		1,315.8	1,296.9
Noncurrent Liabilities
Long-term Debt		4,240.5	4,239.9
Deferred Income Taxes		990.0	962.9
Regulatory Liabilities and Deferred Investment Tax Credits		660.5	644.1
Obligations Under Operating Leases		1.9	1.3
Deferred Credits and Other Noncurrent Liabilities		14.2	3.2
TOTAL NONCURRENT LIABILITIES		5,907.1	5,851.4
TOTAL LIABILITIES		7,222.9	7,148.3
Rate Matters
Commitments and Contingencies
Equity
Paid-in Captial		2,949.6	2,949.6
Retained Earnings		2,541.9	2,426.5
TOTAL MEMBER'S EQUITY		5,491.5	5,376.1
TOTAL LIABILITIES AND EQUITY		12,714.4	12,524.4
Appalachian Power Co [Member]
Current Assets
Cash and Cash Equivalents		6.0	2.5
Restricted Cash		10.0	17.6
Advances to Affiliates		19.7	20.8
Accounts Receivable:
Customers		142.7	158.5
Affiliated Companies - Contracts with Customers		76.4	129.9
Accrued Unbilled Revenues		51.9	54.0
Miscellaneous		0.5	0.2
Allowance for Uncollectible Accounts		(2.1)	(1.6)
Total Accounts Receivable		269.4	341.0
Fuel		48.4	67.1
Materials and Supplies		109.0	109.8
Risk Management Assets		7.0	42.0
Regulatory Asset for Under-Recovered Fuel Costs		301.6	201.3
Margin Deposits		10.5	71.8
Prepayments and Other Current Assets		28.4	51.4
TOTAL CURRENT ASSETS		810.0	925.3
Property, Plant and Equipment
Generation		6,697.1	6,683.9
Transmission		4,363.2	4,322.4
Distribution		4,729.9	4,683.3
Other Property, Plant and Equipment		699.1	696.6
Construction Work in Progress		530.4	469.9
Total Property, Plant and Equipment		17,019.7	16,856.1
Accumulated Depreciation and Amortization		5,146.4	5,051.8
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		11,873.3	11,804.3
Other Noncurrent Assets
Regulatory Assets		733.9	757.6
Securitized Assets		178.8	185.1
Employee Benefits and Pension Assets		224.2	220.5
Operating Lease Assets		63.8	66.9
Deferred Charges and Other Noncurrent Assets		140.3	129.2
TOTAL OTHER NONCURRENT ASSETS		1,341.0	1,359.3
TOTAL ASSETS		14,024.3	14,088.9
Current Liabilities
Advances from Affiliates		35.5	199.3
Accounts Payable		254.4	262.2
Affiliated Companies		118.8	118.6
Short-term Debt:
Long-term Debt Due Within One Year		480.9	480.7
Customer Deposits		75.1	73.9
Accrued Taxes		125.0	119.7
Accrued Interest		79.0	47.9
Obligations Under Operating Leases		14.9	15.1
Other Current Liabilities		90.5	98.5
TOTAL CURRENT LIABILITIES		1,274.1	1,415.9
Noncurrent Liabilities
Long-term Debt		4,446.3	4,458.2
Deferred Income Taxes		1,819.0	1,804.7
Regulatory Liabilities and Deferred Investment Tax Credits		1,210.3	1,238.8
Asset Retirement Obligations		402.5	394.9
Employee Benefits and Pension Obligations		40.9	41.5
Obligations Under Operating Leases		49.4	52.4
Deferred Credits and Other Noncurrent Liabilities		33.8	34.6
TOTAL NONCURRENT LIABILITIES		8,002.2	8,025.1
TOTAL LIABILITIES		9,276.3	9,441.0
Rate Matters
Commitments and Contingencies
Equity
Common Stock		260.4	260.4
Paid-in Capital		1,828.7	1,828.7
Retained Earnings		2,635.8	2,534.4
Accumulated Other Comprehensive Income (Loss)		23.1	24.4
TOTAL EQUITY		4,748.0	4,647.9
TOTAL LIABILITIES AND EQUITY		$ 14,024.3	$ 14,088.9
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		30,000,000	30,000,000
Common Stock, Shares, Outstanding		13,499,500	13,499,500
Indiana Michigan Power Co [Member]
Current Assets
Cash and Cash Equivalents		$ 3.3	$ 1.3
Advances to Affiliates		21.5	21.5
Accounts Receivable:
Customers		42.4	40.6
Affiliated Companies - Contracts with Customers		50.9	78.2
Miscellaneous		2.5	2.5
Allowance for Uncollectible Accounts		0.0	(0.1)
Total Accounts Receivable		95.8	121.2
Fuel		54.8	56.8
Materials and Supplies		170.7	175.2
Risk Management Assets		1.5	3.3
Regulatory Asset for Under-Recovered Fuel Costs		4.6	6.4
Prepayments and Other Current Assets		47.2	53.7
TOTAL CURRENT ASSETS		399.4	439.4
Property, Plant and Equipment
Generation		5,535.2	5,531.8
Transmission		1,787.6	1,783.1
Distribution		2,847.7	2,800.1
Other Property, Plant and Equipment		802.3	792.9
Construction Work in Progress		331.1	302.8
Total Property, Plant and Equipment		11,303.9	11,210.7
Accumulated Depreciation and Amortization		3,991.7	3,899.8
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		7,312.2	7,310.9
Other Noncurrent Assets
Regulatory Assets		408.4	410.9
Spent Nuclear Fuel and Decommissioning Trusts		3,678.4	3,867.0
Operating Lease Assets		56.8	63.5
Deferred Charges and Other Noncurrent Assets		301.9	316.5
TOTAL OTHER NONCURRENT ASSETS		4,445.5	4,657.9
TOTAL ASSETS		12,157.1	12,408.2
Current Liabilities
Advances from Affiliates		73.6	93.3
Accounts Payable		153.9	174.4
Affiliated Companies		97.1	94.9
Short-term Debt:
Long-term Debt Due Within One Year		304.0	67.0
Risk Management Liabilities		0.4	5.0
Customer Deposits		48.5	45.2
Accrued Taxes		117.3	106.5
Accrued Interest		24.7	37.0
Finance Lease, Liability, Current		130.7	130.5
Obligations Under Operating Leases		13.4	15.5
Regulatory Liability for Over-Recovered Fuel Costs		5.8	1.5
Other Current Liabilities		87.0	123.2
TOTAL CURRENT LIABILITIES		1,056.4	894.0
Noncurrent Liabilities
Long-term Debt		2,867.7	3,128.0
Deferred Income Taxes		1,102.2	1,100.2
Regulatory Liabilities and Deferred Investment Tax Credits		2,218.2	2,447.9
Asset Retirement Obligations		1,966.6	1,946.2
Obligations Under Operating Leases		44.3	48.9
Deferred Credits and Other Noncurrent Liabilities		52.2	58.3
TOTAL NONCURRENT LIABILITIES		8,251.2	8,729.5
TOTAL LIABILITIES		9,307.6	9,623.5
Rate Matters
Commitments and Contingencies
Equity
Common Stock		56.6	56.6
Paid-in Capital		980.9	980.9
Retained Earnings		1,813.0	1,748.5
Accumulated Other Comprehensive Income (Loss)		(1.0)	(1.3)
TOTAL EQUITY		2,849.5	2,784.7
TOTAL LIABILITIES AND EQUITY		$ 12,157.1	$ 12,408.2
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		2,500,000	2,500,000
Common Stock, Shares, Outstanding		1,400,000	1,400,000
Indiana Michigan Power Co [Member] | DCC Fuel [Member]
Short-term Debt:
Long-term Debt Due Within One Year		$ 52.0	$ 65.0
Ohio Power Co [Member]
Current Assets
Cash and Cash Equivalents		7.4	3.0
Advances to Affiliates		0.0	42.0
Accounts Receivable:
Customers		84.8	71.6
Affiliated Companies - Contracts with Customers		77.6	71.8
Accrued Unbilled Revenues		14.7	1.3
Miscellaneous		3.0	5.9
Allowance for Uncollectible Accounts		(0.1)	(0.6)
Total Accounts Receivable		180.0	150.0
Materials and Supplies		80.0	74.1
Renewable Energy Credits		40.2	30.5
Prepayments and Other Current Assets		19.3	27.9
TOTAL CURRENT ASSETS		326.9	327.5
Property, Plant and Equipment
Transmission		3,028.0	2,992.8
Distribution		6,141.3	6,070.6
Other Property, Plant and Equipment		996.9	992.9
Construction Work in Progress		385.2	365.0
Total Property, Plant and Equipment		10,551.4	10,421.3
Accumulated Depreciation and Amortization		2,483.9	2,458.3
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		8,067.5	7,963.0
Other Noncurrent Assets
Regulatory Assets		279.4	293.0
Operating Lease Assets		79.2	81.2
Deferred Charges and Other Noncurrent Assets		505.1	601.1
TOTAL OTHER NONCURRENT ASSETS		863.7	975.3
TOTAL ASSETS		9,258.1	9,265.8
Current Liabilities
Advances from Affiliates		55.7	0.0
Accounts Payable		201.8	213.5
Affiliated Companies		117.6	125.4
Short-term Debt:
Long-term Debt Due Within One Year		0.1	0.1
Risk Management Liabilities		1.5	6.7
Customer Deposits		90.5	66.4
Accrued Taxes		544.2	702.4
Obligations Under Operating Leases		13.2	13.1
Other Current Liabilities		137.1	118.1
TOTAL CURRENT LIABILITIES		1,161.7	1,245.7
Noncurrent Liabilities
Long-term Debt		2,968.9	2,968.4
Long-term Risk Management Liabilities		67.0	85.8
Deferred Income Taxes		1,014.7	1,000.9
Regulatory Liabilities and Deferred Investment Tax Credits		1,033.9	1,020.9
Obligations Under Operating Leases		66.6	68.6
Deferred Credits and Other Noncurrent Liabilities		30.8	29.2
TOTAL NONCURRENT LIABILITIES		5,181.9	5,173.8
TOTAL LIABILITIES		6,343.6	6,419.5
Rate Matters
Commitments and Contingencies
Equity
Common Stock		321.2	321.2
Paid-in Capital		838.8	838.8
Retained Earnings		1,754.5	1,686.3
TOTAL EQUITY		2,914.5	2,846.3
TOTAL LIABILITIES AND EQUITY		$ 9,258.1	$ 9,265.8
Common Stock, No Par Value		$ 0	$ 0
Common Stock, Shares Authorized		40,000,000	40,000,000
Common Stock, Shares, Outstanding		27,952,473	27,952,473
Public Service Co Of Oklahoma [Member]
Current Assets
Cash and Cash Equivalents		$ 2.9	$ 1.3
Accounts Receivable:
Customers		40.7	41.5
Affiliated Companies - Contracts with Customers		24.6	35.0
Miscellaneous		0.3	0.6
Total Accounts Receivable		65.6	77.1
Fuel		8.5	14.5
Materials and Supplies		63.1	56.2
Risk Management Assets		6.7	12.1
Accrued Tax Benefits		2.4	17.6
Regulatory Asset for Under-Recovered Fuel Costs		219.2	194.6
Prepayments and Other Current Assets		11.4	13.4
TOTAL CURRENT ASSETS		379.8	386.8
Property, Plant and Equipment
Generation		2,375.5	1,802.4
Transmission		1,115.4	1,107.7
Distribution		3,040.2	3,004.9
Other Property, Plant and Equipment		447.7	437.0
Construction Work in Progress		165.3	156.0
Total Property, Plant and Equipment		7,144.1	6,508.0
Accumulated Depreciation and Amortization		1,739.6	1,705.2
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		5,404.5	4,802.8
Other Noncurrent Assets
Regulatory Assets		1,042.0	1,037.4
Employee Benefits and Pension Assets		96.0	95.2
Operating Lease Assets		107.9	68.9
Deferred Charges and Other Noncurrent Assets		47.1	7.9
TOTAL OTHER NONCURRENT ASSETS		1,293.0	1,209.4
TOTAL ASSETS		7,077.3	6,399.0
Current Liabilities
Advances from Affiliates		211.8	72.3
Accounts Payable		127.7	157.4
Affiliated Companies		42.3	51.0
Short-term Debt:
Long-term Debt Due Within One Year		625.5	125.5
Risk Management Liabilities		0.1	3.7
Customer Deposits		58.2	56.2
Accrued Taxes		57.0	27.0
Obligations Under Operating Leases		7.7	6.9
Other Current Liabilities		59.7	62.7
TOTAL CURRENT LIABILITIES		1,190.0	562.7
Noncurrent Liabilities
Long-term Debt		1,788.1	1,788.0
Deferred Income Taxes		779.0	782.3
Regulatory Liabilities and Deferred Investment Tax Credits		831.3	835.3
Asset Retirement Obligations		71.1	57.5
Obligations Under Operating Leases		100.9	62.2
Deferred Credits and Other Noncurrent Liabilities		19.5	19.4
TOTAL NONCURRENT LIABILITIES		3,589.9	3,544.7
TOTAL LIABILITIES		4,779.9	4,107.4
Rate Matters
Commitments and Contingencies
Equity
Common Stock		157.2	157.2
Paid-in Capital		1,039.0	1,039.0
Retained Earnings		1,101.2	1,095.4
TOTAL EQUITY		2,297.4	2,291.6
TOTAL LIABILITIES AND EQUITY		$ 7,077.3	$ 6,399.0
Common Stock, Shares Authorized		11,000,000	11,000,000
Common Stock, Shares, Outstanding		9,013,000	9,013,000
Common Stock, Par or Stated Value Per Share		$ 15	$ 15
Common Stock, Shares, Issued		10,482,000	10,482,000
Southwestern Electric Power Co [Member]
Current Assets
Cash and Cash Equivalents		$ 58.1	$ 51.2
Advances to Affiliates		2.1	155.9
Accounts Receivable:
Customers		31.5	35.8
Affiliated Companies - Contracts with Customers		28.4	38.3
Miscellaneous		18.9	12.3
Total Accounts Receivable		78.8	86.4
Fuel		81.5	82.2
Materials and Supplies		84.3	81.9
Risk Management Assets		15.8	9.8
Accrued Tax Benefits		13.2	17.8
Regulatory Asset for Under-Recovered Fuel Costs		209.8	143.9
Prepayments and Other Current Assets		34.2	39.4
TOTAL CURRENT ASSETS		577.8	668.5
Property, Plant and Equipment
Generation		5,434.3	4,734.5
Transmission		2,357.2	2,316.9
Distribution		2,548.3	2,514.3
Other Property, Plant and Equipment		781.5	764.0
Construction Work in Progress		213.8	240.7
Total Property, Plant and Equipment		11,335.1	10,570.4
Accumulated Depreciation and Amortization		3,247.8	3,170.3
TOTAL PROPERTY, PLANT AND EQUIPMENT - NET		8,087.3	7,400.1
Other Noncurrent Assets
Regulatory Assets		962.3	1,005.3
Deferred Charges and Other Noncurrent Assets		338.4	251.8
TOTAL OTHER NONCURRENT ASSETS		1,300.7	1,257.1
TOTAL ASSETS		9,965.8	9,325.7
Current Liabilities
Advances from Affiliates		202.9	0.0
Accounts Payable		125.1	163.6
Affiliated Companies		42.7	61.4
Short-term Debt:
Long-term Debt Due Within One Year		6.2	6.2
Risk Management Liabilities		0.0	2.1
Customer Deposits		64.1	62.4
Accrued Taxes		115.4	44.3
Accrued Interest		29.4	36.0
Obligations Under Operating Leases		8.5	8.1
Other Current Liabilities		108.0	154.6
TOTAL CURRENT LIABILITIES		702.3	538.7
Noncurrent Liabilities
Long-term Debt		3,387.9	3,389.0
Deferred Income Taxes		1,084.5	1,087.6
Regulatory Liabilities and Deferred Investment Tax Credits		822.1	806.9
Asset Retirement Obligations		219.8	192.7
Employee Benefits and Pension Obligations		21.0	20.3
Obligations Under Operating Leases		124.2	77.7
Deferred Credits and Other Noncurrent Liabilities		60.2	63.0
TOTAL NONCURRENT LIABILITIES		5,719.7	5,637.2
TOTAL LIABILITIES		6,422.0	6,175.9
Rate Matters
Commitments and Contingencies
Equity
Common Stock		0.1	0.1
Paid-in Capital		1,442.2	1,092.2
Retained Earnings		2,095.0	2,050.9
Accumulated Other Comprehensive Income (Loss)		6.4	6.7
TOTAL COMMON SHAREHOLDER'S EQUITY		3,543.7	3,149.9
Noncontrolling Interests		0.1	(0.1)
TOTAL EQUITY		3,543.8	3,149.8
TOTAL LIABILITIES AND EQUITY		$ 9,965.8	$ 9,325.7
Common Stock, No Par Value		$ 18	$ 18
Common Stock, Shares Authorized		3,680	3,680
Common Stock, Shares, Outstanding		3,680	3,680
Southwestern Electric Power Co [Member] | Sabine Mining Co [Member]
Current Assets
Cash and Cash Equivalents		$ 54.8	$ 49.9
Accounts Receivable:
Fuel		19.5	13.1
Materials and Supplies		11.0	12.0
Property, Plant and Equipment
Other Property, Plant and Equipment		219.9	219.9
Accumulated Depreciation and Amortization		$ 179.3	$ 168.1

[1] Amount includes Assets Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 6 for additional information.

[2] Amount of securitized debt for receivables as accounted for under the “Transfers and Servicing” accounting guidance.

[3] Amount excludes $200 million and $200 million as of March 31, 2022 and December 31, 2021, respectively, of Long-term Debt Due Within One Year classified as Liabilities Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 6 for additional information.

[4] Amount excludes $903 million and $903 million as of March 31, 2022 and December 31, 2021, respectively, of Long-term Debt classified as Liabilities Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 6 for additional information.

[5] Amount includes Assets Held for Sale on the balance sheet. See “Disposition of KPCo and KTCo” section of Note 6 for additional information.