CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - AEP Texas - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2026	Mar. 31, 2025
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	$ 907	$ 833
Deferred Income Taxes	188	165
Allowance for Equity Funds Used During Construction	(70)	(57)
Property Taxes	(108)	(88)
Change in Other Noncurrent Assets	(351)	(131)
Change in Other Noncurrent Liabilities	433	142
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(36)	(2)
Materials and Supplies	(39)	139
Accounts Payable	108	6
Accrued Taxes, Net	(244)	(153)
Other Current Assets	(115)	(23)
Other Current Liabilities	(66)	(93)
Net Cash Flows from Operating Activities	1,519	1,450
INVESTING ACTIVITIES
Construction Expenditures	(2,830)	(2,100)
Contribution in Aid of Construction Advances	260	55
Other Investing Activities	(1)	(5)
Net Cash Flows Used for Investing Activities	(3,569)	(2,102)
FINANCING ACTIVITIES
Issuance of Long-term Debt	2,906	562
Retirement of Long-term Debt	(678)	(229)
Principal Payments for Finance Lease Obligations	(24)	(13)
Other Financing Activities	(29)	(18)
Net Cash Flows from (Used for) Financing Activities	2,121	698
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	71	46
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	268	246
Cash, Cash Equivalents and Restricted Cash at End of Period	339	292
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	450	350
Construction Expenditures Included in Current Liabilities as of March 31,	1,434	1,041
Contributions in Aid of Construction Advances Included in Current Assets as of March 31,	61	0
AEP TEXAS INC.
OPERATING ACTIVITIES
Net Income	120	102
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	105	109
Deferred Income Taxes	44	13
Allowance for Equity Funds Used During Construction	(19)	(12)
Property Taxes	(100)	(95)
Change in Other Noncurrent Assets	(57)	(6)
Change in Other Noncurrent Liabilities	33	(1)
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(35)	(10)
Materials and Supplies	(21)	14
Accounts Payable	47	(7)
Accrued Taxes, Net	44	48
Other Current Assets	(6)	2
Other Current Liabilities	36	24
Net Cash Flows from Operating Activities	191	181
INVESTING ACTIVITIES
Construction Expenditures	(761)	(450)
Change in Advances to Affiliates, Net	(105)	0
Contribution in Aid of Construction Advances	127	14
Other Investing Activities	0	(2)
Net Cash Flows Used for Investing Activities	(739)	(438)
FINANCING ACTIVITIES
Issuance of Long-term Debt	741	400
Change in Advances from Affiliates, Net	(188)	(141)
Retirement of Long-term Debt	(12)	(12)
Principal Payments for Finance Lease Obligations	(2)	(2)
Other Financing Activities	1	2
Net Cash Flows from (Used for) Financing Activities	540	247
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(8)	(10)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	14	24
Cash, Cash Equivalents and Restricted Cash at End of Period	6	14
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	7	25
Construction Expenditures Included in Current Liabilities as of March 31,	337	196
Contributions in Aid of Construction Advances Included in Current Assets as of March 31,	$ 50	$ 0