CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - OPCo - 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)
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)
Other Investing Activities	(1)	(5)
Net Cash Flows Used for Investing Activities	(3,569)	(2,102)
FINANCING ACTIVITIES
Principal Payments for Finance Lease Obligations	(24)	(13)
Dividends Paid on Common Stock	(520)	(500)
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
OHIO POWER COMPANY
OPERATING ACTIVITIES
Net Income	117	63
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	111	94
Deferred Income Taxes	49	1
Allowance for Equity Funds Used During Construction	(7)	(7)
Mark-to-Market of Risk Management Contracts	(1)	4
Property Taxes	106	101
Security Deposits	96	35
Change in Regulatory Assets	(58)	24
Change in Other Noncurrent Assets	(26)	26
Change in Other Noncurrent Liabilities	24	(32)
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(45)	31
Materials and Supplies	(2)	7
Accounts Payable	27	(17)
Customer Deposits	8	17
Accrued Taxes, Net	(190)	(169)
Other Current Assets	0	5
Other Current Liabilities	(20)	(17)
Net Cash Flows from Operating Activities	189	166
INVESTING ACTIVITIES
Construction Expenditures	(300)	(254)
Change in Advances to Affiliates, Net	0	115
Other Investing Activities	13	15
Net Cash Flows Used for Investing Activities	(287)	(124)
FINANCING ACTIVITIES
Capital Contribution from Parent	39	0
Change in Advances from Affiliates, Net	60	10
Principal Payments for Finance Lease Obligations	(1)	(1)
Dividends Paid on Common Stock	0	(46)
Net Cash Flows from (Used for) Financing Activities	98	(37)
Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash	0	5
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	5	5
Cash, Cash Equivalents and Restricted Cash at End of Period	5	10
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	17	17
Noncash Acquisitions Under Finance Leases	0	1
Construction Expenditures Included in Current Liabilities as of March 31,	$ 106	$ 140