CONSOLIDATED STATEMENTS OF CASH FLOWS - APCo - 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)
Mark-to-Market of Risk Management Contracts	(116)	(81)	9
Deferred Fuel Over/Under-Recovery, Net	133	277	893
Change in Regulatory Assets	(304)	(174)	(316)
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
Fuel, 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)
Acquisitions of Assets	(3,453)	(399)	(155)
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
APPALACHIAN POWER COMPANY
OPERATING ACTIVITIES
Net Income	457	422	294
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	632	602	572
Deferred Income Taxes	42	(17)	(54)
Allowance for Equity Funds Used During Construction	(17)	(16)	(12)
Mark-to-Market of Risk Management Contracts	(44)	(35)	66
Deferred Fuel Over/Under-Recovery, Net	59	136	280
Change in Regulatory Assets	(155)	(115)	(20)
Change in Other Noncurrent Assets	(17)	(47)	(95)
Change in Other Noncurrent Liabilities	54	12	(2)
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(36)	(46)	18
Fuel, Materials and Supplies	72	24	(174)
Accounts Payable	(62)	166	(126)
Accrued Taxes, Net	(59)	51	25
Other Current Assets	16	(4)	(16)
Other Current Liabilities	(20)	11	(33)
Net Cash Flows from Operating Activities	922	1,144	723
INVESTING ACTIVITIES
Construction Expenditures	(1,056)	(1,009)	(1,053)
Change in Advances to Affiliates, Net	1	1	1
Acquisitions of Assets	(548)	(1)	(11)
Other Investing Activities	19	16	8
Net Cash Flows Used for Investing Activities	(1,584)	(993)	(1,055)
FINANCING ACTIVITIES
Capital Contribution from Parent	12	114	7
Return of Capital to Parent	0	(4)	(1)
Issuance of Long-term Debt	1,143	481	200
Change in Advances from Affiliates, Net	114	(245)	157
Retirement of Long-term Debt	(548)	(414)	(27)
Principal Payments for Finance Lease Obligations	(9)	(9)	(8)
Dividends Paid on Common Stock	(50)	(75)	0
Other Financing Activities	3	1	2
Net Cash Flows from Financing Activities	665	(151)	330
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	3	0	(2)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	20	20	22
Cash, Cash Equivalents and Restricted Cash at End of Period	23	20	20
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	272	257	260
Noncash Acquisitions Under Finance Leases	4	2	5
Construction Expenditures Included in Current Liabilities as of December 31,	$ 143	$ 159	$ 101