CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - APCo - 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)
Mark-to-Market of Risk Management Contracts	100	(15)
Deferred Fuel Over/Under-Recovery, Net	(122)	(75)
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)
Fuel, 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)
Other Investing Activities	(1)	(5)
Net Cash Flows Used for Investing Activities	(3,569)	(2,102)
FINANCING ACTIVITIES
Retirement of Long-term Debt	(678)	(229)
Principal Payments for Finance Lease Obligations	(24)	(13)
Dividends Paid on Common Stock	(520)	(500)
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
Noncash Acquisitions Under Finance Leases	24	8
Construction Expenditures Included in Current Liabilities as of March 31,	1,434	1,041
APPALACHIAN POWER COMPANY
OPERATING ACTIVITIES
Net Income	195	165
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	168	163
Deferred Income Taxes	49	20
Allowance for Equity Funds Used During Construction	(4)	(4)
Mark-to-Market of Risk Management Contracts	64	6
Deferred Fuel Over/Under-Recovery, Net	(106)	2
Change in Regulatory Assets	(62)	(86)
Change in Other Noncurrent Assets	(48)	(24)
Change in Other Noncurrent Liabilities	(14)	38
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(94)	29
Fuel, Materials and Supplies	(13)	43
Accounts Payable	24	(29)
Accrued Taxes, Net	5	24
Other Current Assets	(11)	(4)
Other Current Liabilities	14	10
Net Cash Flows from Operating Activities	167	353
INVESTING ACTIVITIES
Construction Expenditures	(236)	(262)
Change in Advances to Affiliates, Net	0	(1)
Other Investing Activities	29	2
Net Cash Flows Used for Investing Activities	(207)	(261)
FINANCING ACTIVITIES
Capital Contribution from Parent	81	0
Change in Advances from Affiliates, Net	(32)	(28)
Retirement of Long-term Debt	(15)	(14)
Principal Payments for Finance Lease Obligations	(1)	(2)
Dividends Paid on Common Stock	0	(50)
Other Financing Activities	0	1
Net Cash Flows from (Used for) Financing Activities	33	(93)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(7)	(1)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	23	20
Cash, Cash Equivalents and Restricted Cash at End of Period	16	19
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	42	35
Noncash Acquisitions Under Finance Leases	2	2
Construction Expenditures Included in Current Liabilities as of March 31,	$ 126	$ 139