CONSOLIDATED STATEMENTS OF CASH FLOWS - APCo - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	$ 3,289.9	$ 3,090.4	$ 3,202.8
Deferred Income Taxes	58.3	185.1	(137.2)
Asset Impairments and Other Related Charges	142.5	85.6	48.8
Allowance for Equity Funds Used During Construction	(211.0)	(174.9)	(133.7)
Mark-to-Market of Risk Management Contracts	(80.4)	8.8	15.5
Deferred Fuel Over/Under-Recovery, Net	277.0	892.8	(319.2)
Change in Regulatory Assets	(174.3)	(315.8)	(46.7)
Establishment of 2017-2019 Virginia Triennial Review Regulatory Asset	0.0	0.0	(37.0)
Change in Other Noncurrent Assets	(347.6)	(465.1)	(187.7)
Change in Other Noncurrent Liabilities	306.3	29.0	337.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(156.0)	236.5	(681.7)
Fuel, Materials and Supplies	171.6	(504.0)	(313.9)
Accounts Payable	85.1	(253.2)	489.2
Accrued Taxes, Net	240.2	22.5	105.4
Other Current Assets	(13.2)	(43.9)	109.0
Other Current Liabilities	182.6	(161.4)	54.3
Net Cash Flows from Operating Activities	6,804.3	5,012.2	5,288.0
INVESTING ACTIVITIES
Construction Expenditures	(7,630.7)	(7,378.3)	(6,671.7)
Other Investing Activities	141.9	122.1	50.3
Net Cash Flows Used for Investing Activities	(7,596.5)	(6,266.7)	(7,751.8)
FINANCING ACTIVITIES
Issuance of Long-term Debt	5,117.0	5,462.8	4,649.7
Retirement of Long-term Debt	(2,685.0)	(2,196.1)	(2,345.4)
Principal Payments for Finance Lease Obligations	(64.8)	(68.3)	(309.5)
Dividends Paid on Common Stock	(1,903.9)	(1,760.4)	(1,645.2)
Other Financing Activities	(49.8)	(78.6)	(105.4)
Net Cash Flows from Financing Activities	659.2	1,077.0	2,568.9
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	(133.0)	(177.5)	105.1
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	379.0	556.5	451.4
Cash, Cash Equivalents and Restricted Cash at End of Period	246.0	379.0	556.5
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	1,837.8	1,673.5	1,286.3
Net Cash Paid for Income Taxes	133.4	78.4	116.8
Noncash Acquisitions Under Finance Leases	29.5	48.7	31.8
Construction Expenditures Included in Current Liabilities as of December 31,	1,312.0	842.4	1,258.9
APPALACHIAN POWER COMPANY
OPERATING ACTIVITIES
Net Income	421.7	294.4	394.2
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	602.4	571.9	575.9
Deferred Income Taxes	(17.4)	(54.3)	79.6
Asset Impairments and Other Related Charges	0.0	0.0	24.9
Allowance for Equity Funds Used During Construction	(16.1)	(11.9)	(11.7)
Mark-to-Market of Risk Management Contracts	(35.0)	65.6	(24.4)
Deferred Fuel Over/Under-Recovery, Net	136.1	279.7	(501.8)
Change in Regulatory Assets	(114.9)	(19.9)	(34.4)
Establishment of 2017-2019 Virginia Triennial Review Regulatory Asset	0.0	0.0	(37.0)
Change in Other Noncurrent Assets	(46.8)	(95.4)	(40.8)
Change in Other Noncurrent Liabilities	11.9	(1.9)	31.4
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(45.9)	17.5	(8.5)
Fuel, Materials and Supplies	23.7	(173.9)	(113.5)
Margin Deposits	(1.4)	(16.1)	64.4
Accounts Payable	166.2	(125.9)	190.1
Accrued Taxes, Net	50.8	25.2	6.7
Other Current Assets	(3.3)	0.4	0.2
Other Current Liabilities	11.7	(32.3)	5.9
Net Cash Flows from Operating Activities	1,143.7	723.1	601.2
INVESTING ACTIVITIES
Construction Expenditures	(1,009.4)	(1,053.0)	(1,048.6)
Change in Advances to Affiliates, Net	1.2	0.9	1.0
Other Investing Activities	15.5	(2.8)	42.4
Net Cash Flows Used for Investing Activities	(992.7)	(1,054.9)	(1,005.2)
FINANCING ACTIVITIES
Capital Contribution from Parent	114.1	6.5	0.0
Return of Capital to Parent	(4.5)	(0.7)	0.0
Issuance of Long-term Debt	480.8	200.0	698.0
Change in Advances from Affiliates, Net	(244.6)	157.4	(17.1)
Retirement of Long-term Debt	(413.5)	(26.6)	(230.4)
Principal Payments for Finance Lease Obligations	(8.7)	(8.3)	(7.9)
Dividends Paid on Common Stock	(75.0)	0.0	(37.5)
Other Financing Activities	0.6	1.5	0.7
Net Cash Flows from Financing Activities	(150.8)	329.8	405.8
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	0.2	(2.0)	1.8
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	19.9	21.9	20.1
Cash, Cash Equivalents and Restricted Cash at End of Period	20.1	19.9	21.9
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	256.9	259.7	215.1
Net Cash Paid for Income Taxes	47.8	47.4	(88.6)
Noncash Acquisitions Under Finance Leases	1.8	5.0	1.6
Construction Expenditures Included in Current Liabilities as of December 31,	$ 159.2	$ 100.7	$ 164.6