CONSOLIDATED STATEMENTS OF CASH FLOWS - AEP Texas - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	$ 3,380	$ 3,290	$ 3,090
Deferred Income Taxes	311	58	185
Allowance for Equity Funds Used During Construction	(245)	(211)	(175)
Pension Contributions to Qualified Plan Trust	(95)	0	0
Change in Other Noncurrent Assets	(559)	(348)	(446)
Change in Other Noncurrent Liabilities	269	306	29
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(246)	(156)	236
Materials and Supplies	115	172	(504)
Accounts Payable	252	85	(253)
Accrued Taxes, Net	32	240	22
Other Current Assets	85	(13)	(44)
Other Current Liabilities	103	182	(162)
Net Cash Flows from Operating Activities	6,944	6,804	5,012
INVESTING ACTIVITIES
Construction Expenditures	(8,453)	(7,631)	(7,378)
Other Investing Activities	118	143	122
Net Cash Flows Used for Investing Activities	(11,939)	(7,596)	(6,267)
FINANCING ACTIVITIES
Issuance of Long-term Debt	8,261	5,117	5,463
Retirement of Long-term Debt	(3,649)	(2,685)	(2,196)
Principal Payments for Finance Lease Obligations	(51)	(65)	(68)
Dividends Paid on Common Stock	(2,008)	(1,898)	(1,752)
Other Financing Activities	(8)	(50)	(80)
Net Cash Flows from Financing Activities	5,017	659	1,077
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	22	(133)	(178)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	246	379	557
Cash, Cash Equivalents and Restricted Cash at End of Period	268	246	379
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	1,894	1,838	1,674
Noncash Acquisitions Under Finance Leases	44	30	49
Construction Expenditures Included in Current Liabilities as of December 31,	1,935	1,312	842
AEP TEXAS INC.
OPERATING ACTIVITIES
Net Income	488	420	370
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	441	494	469
Deferred Income Taxes	71	78	64
Allowance for Equity Funds Used During Construction	(53)	(46)	(28)
Pension Contributions to Qualified Plan Trust	(12)	0	0
Change in Other Noncurrent Assets	(108)	(91)	(97)
Change in Other Noncurrent Liabilities	85	39	24
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(18)	(8)	(28)
Materials and Supplies	2	21	(52)
Accounts Payable	72	25	(24)
Accrued Taxes, Net	(10)	30	12
Other Current Assets	3	(6)	4
Other Current Liabilities	(41)	8	(54)
Net Cash Flows from Operating Activities	920	964	660
INVESTING ACTIVITIES
Construction Expenditures	(1,920)	(1,414)	(1,477)
Other Investing Activities	68	55	69
Net Cash Flows Used for Investing Activities	(1,852)	(1,359)	(1,408)
FINANCING ACTIVITIES
Capital Contribution from Parent	453	14	527
Return of Capital to Parent	0	(1)	(5)
Issuance of Long-term Debt	1,293	842	505
Change in Advances from Affiliates, Net	(97)	181	7
Retirement of Long-term Debt	(724)	(296)	(279)
Principal Payments for Finance Lease Obligations	(8)	(8)	(7)
Dividends Paid on Common Stock	0	(350)	0
Other Financing Activities	5	3	2
Net Cash Flows from Financing Activities	922	385	750
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(10)	(10)	2
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	24	34	32
Cash, Cash Equivalents and Restricted Cash at End of Period	14	24	34
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	244	241	226
Noncash Acquisitions Under Finance Leases	7	5	5
Construction Expenditures Included in Current Liabilities as of December 31,	$ 514	$ 266	$ 112