Organization and Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2023

Reconciliation of Cash, Cash Equivalents and Restricted Cash

	December 31, 2023
	AEP		AEP Texas		APCo
	(in millions)
Cash and Cash Equivalents	$	330.1	$	0.1	$	5.0
Restricted Cash	48.9		34.0		14.9
Total Cash, Cash Equivalents and Restricted Cash	$	379.0	$	34.1	$	19.9

	December 31, 2022
	AEP		AEP Texas		APCo
	(in millions)
Cash and Cash Equivalents	$	509.4	$	0.1	$	7.5
Restricted Cash	47.1		32.7		14.4
Total Cash, Cash Equivalents and Restricted Cash	$	556.5	$	32.8	$	21.9

Significant Customers

Significant Customers of AEP Texas:
NRG Energy and TXU Energy	2023		2022		2021
Percentage of Total Revenues	41	%	45	%	43	%
Percentage of Accounts Receivable – Customers	34	%	42	%	41	%

Significant Customers of AEPTCo:
AEP Subsidiaries	2023		2022		2021
Percentage of Total Revenues	79	%	79	%	79	%
Percentage of Total Accounts Receivable	60	%	72	%	81	%

Target Asset Allocations

Pension Plan Assets	Target
Equity	30	%
Fixed Income	54	%
Other Investments	15	%
Cash and Cash Equivalents	1	%
OPEB Plans Assets	Target
Equity	58	%
Fixed Income	41	%
Cash and Cash Equivalents	1	%

Basic and Diluted EPS Calculations

	Years Ended December 31,
	2023				2022				2021
	(in millions, except per-share data)
			$/share				$/share				$/share
Earnings Attributable to AEP Common Shareholders	$	2,208.1			$	2,307.2			$	2,488.1
Weighted-Average Number of Basic AEP Common Shares Outstanding	518.9		$	4.26	511.8		$	4.51	500.5		$	4.97
Weighted-Average Dilutive Effect of Stock-Based Awards	1.3		(0.02)		1.7		(0.02)		1.3		(0.01)
Weighted-Average Number of Diluted AEP Common Shares Outstanding	520.2		$	4.24	513.5		$	4.49	501.8		$	4.96

Supplementary Information

2023
Depreciation and Amortization	AEP		AEP Texas		AEPTCo		APCo		I&M		OPCo		PSO		SWEPCo
	(in millions)
Depreciation and Amortization of Property, Plant and Equipment	$	2,927.5	$	380.0	$	393.8	$	571.1	$	439.8	$	315.8	$	240.3	$	323.4
Amortization of Certain Securitized Assets	91.9		91.9		—		—		—		—		—		—
Amortization of Regulatory Assets and Liabilities	71.0		(3.4)		—		0.8		30.2		0.4		15.2		19.4
Total Depreciation and Amortization	$	3,090.4	$	468.5	$	393.8	$	571.9	$	470.0	$	316.2	$	255.5	$	342.8

2022
Depreciation and Amortization	AEP		AEP Texas		AEPTCo		APCo		I&M		OPCo		PSO		SWEPCo
	(in millions)
Depreciation and Amortization of Property, Plant and Equipment	$	3,072.8	$	363.5	$	346.2	$	576.1	$	511.9	$	293.1	$	226.2	$	319.3
Amortization of Certain Securitized Assets	93.3		93.3		—		—		—		—		—		—
Amortization of Regulatory Assets and Liabilities	36.7		(4.4)		—		(0.2)		15.3		1.2		3.9		5.5
Total Depreciation and Amortization	$	3,202.8	$	452.4	$	346.2	$	575.9	$	527.2	$	294.3	$	230.1	$	324.8

2021
Depreciation and Amortization	AEP		AEP Texas		AEPTCo		APCo		I&M		OPCo		PSO		SWEPCo
	(in millions)
Depreciation and Amortization of Property, Plant and Equipment	$	2,717.1	$	327.2	$	297.3	$	547.0	$	424.9	$	301.1	$	185.9	$	292.9
Amortization of Certain Securitized Assets	64.2		64.2		—		—		—		—		—		—
Amortization of Regulatory Assets and Liabilities	44.4		(4.4)		—		(0.8)		21.1		2.2		10.7		2.1
Total Depreciation and Amortization	$	2,825.7	$	387.0	$	297.3	$	546.2	$	446.0	$	303.3	$	196.6	$	295.0

	Years Ended December 31,
Cash Flow Information	2023		2022		2021
	(in millions)
Cash Paid (Received) for:
Interest, Net of Capitalized Amounts	$	1,673.5	$	1,286.3	$	1,137.2
Income Taxes	78.4		116.8		13.2
Sale of Transferable Tax Credits	(102.0)		—		—
Noncash Investing and Financing Activities:
Acquisitions Under Finance Leases	48.7		31.8		287.6
Construction Expenditures Included in Current Liabilities as of December 31,	842.4		1,258.9		1,180.4
Acquisition of Nuclear Fuel Included in Current Liabilities as of December 31,	24.2		—		—
Noncash Contribution of Assets to Cedar Creek Project	—		—		(9.3)
Noncontrolling Interest Assumed - Dry Lake Solar Project	—		—		35.3
Noncash Increase in Noncurrent Assets from the Sale of the Competitive Contracted Renewables Portfolio	74.7		—		—