CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - AEP Texas - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	$ 2,566.1	$ 2,461.7
Deferred Income Taxes	123.6	89.5
Allowance for Equity Funds Used During Construction	(172.9)	(153.0)
Pension Contributions to Qualified Plan Trust	(94.7)	0.0
Change in Other Noncurrent Assets	(719.7)	(244.0)
Change in Other Noncurrent Liabilities	133.8	193.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(212.4)	(131.8)
Materials and Supplies	150.7	188.5
Accounts Payable	327.3	14.2
Accrued Taxes, Net	(687.2)	(532.3)
Other Current Assets	37.7	(139.2)
Other Current Liabilities	74.3	161.8
Net Cash Flows from Operating Activities	5,130.8	5,076.9
INVESTING ACTIVITIES
Construction Expenditures	(6,001.2)	(5,168.6)
Other Investing Activities	43.5	73.0
Net Cash Flows Used for Investing Activities	(7,749.1)	(4,769.5)
FINANCING ACTIVITIES
Issuance of Long-term Debt	6,249.2	3,748.5
Retirement of Long-term Debt	(2,803.8)	(1,969.1)
Principal Payments for Finance Lease Obligations	(37.9)	(51.2)
Other Financing Activities	2.8	(50.4)
Net Cash Flows from (Used for) Financing Activities	3,479.1	(387.2)
Net Increase in Cash and Cash Equivalents	860.8	(79.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	246.0	379.0
Cash, Cash Equivalents and Restricted Cash at End of Period	1,106.8	299.2
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	1,315.1	1,247.3
Net Cash Paid (Received) for Income Taxes	60.1	87.9
Noncash Acquisitions Under Finance Leases	30.0	24.5
Construction Expenditures Included in Current Liabilities as of September 30,	1,168.8	1,015.1
AEP Texas
OPERATING ACTIVITIES
Net Income	389.4	340.6
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	329.0	368.3
Deferred Income Taxes	67.8	70.3
Allowance for Equity Funds Used During Construction	(37.1)	(34.6)
Pension Contributions to Qualified Plan Trust	(12.0)	0.0
Change in Other Noncurrent Assets	(116.2)	(99.3)
Change in Other Noncurrent Liabilities	49.1	32.0
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(76.9)	(67.8)
Materials and Supplies	19.7	11.8
Accounts Payable	38.7	23.6
Accrued Taxes, Net	15.5	56.0
Other Current Assets	(0.1)	(9.1)
Other Current Liabilities	27.6	43.8
Net Cash Flows from Operating Activities	694.5	735.6
INVESTING ACTIVITIES
Construction Expenditures	(1,331.8)	(1,042.4)
Change in Advances to Affiliates, Net	(418.1)	(54.7)
Other Investing Activities	56.4	44.2
Net Cash Flows Used for Investing Activities	(1,693.5)	(1,052.9)
FINANCING ACTIVITIES
Capital Contribution from Parent	450.9	1.6
Return of Capital to Parent	0.0	(0.7)
Issuance of Long-term Debt	1,293.5	841.9
Change in Advances from Affiliates, Net	(284.9)	(103.7)
Retirement of Long-term Debt	(474.5)	(256.5)
Principal Payments for Finance Lease Obligations	(5.6)	(5.6)
Dividends Paid on Common Stock	0.0	(150.0)
Other Financing Activities	3.4	1.4
Net Cash Flows from (Used for) Financing Activities	982.8	328.4
Net Increase in Cash and Cash Equivalents	(16.2)	11.1
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	23.6	34.1
Cash, Cash Equivalents and Restricted Cash at End of Period	7.4	45.2
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	143.3	132.8
Net Cash Paid (Received) for Income Taxes	33.4	(2.7)
Noncash Acquisitions Under Finance Leases	5.2	3.6
Construction Expenditures Included in Current Liabilities as of September 30,	$ 259.3	$ 167.3