CONDENSED STATEMENTS OF CASH FLOWS - PSO - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	$ 2,566.1	$ 2,461.7
Deferred Income Taxes	123.6	89.5
Allowance for Equity Funds Used During Construction	(172.9)	(153.0)
Mark-to-Market of Risk Management Contracts	(192.6)	(97.6)
Property Taxes	541.3	508.3
Deferred Fuel Over/Under-Recovery, Net	164.7	304.6
Change in Other Noncurrent Assets	(719.7)	(244.0)
Change in Other Noncurrent Liabilities	133.8	193.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(212.4)	(131.8)
Fuel, Materials and Supplies	150.7	188.5
Accounts Payable	327.3	14.2
Accrued Taxes, Net	(687.2)	(532.3)
Other Current Assets	37.7	(139.2)
Other Current Liabilities	74.3	161.8
Net Cash Flows from Operating Activities	5,130.8	5,076.9
INVESTING ACTIVITIES
Construction Expenditures	(6,001.2)	(5,168.6)
Acquisitions of Generation Facilities	(1,657.3)	0.0
Other Investing Activities	43.5	73.0
Net Cash Flows Used for Investing Activities	(7,749.1)	(4,769.5)
FINANCING ACTIVITIES
Issuance of Long-term Debt	6,249.2	3,748.5
Retirement of Long-term Debt	(2,803.8)	(1,969.1)
Principal Payments for Finance Lease Obligations	(37.9)	(51.2)
Dividends Paid on Common Stock	(1,497.9)	(1,402.7)
Other Financing Activities	2.8	(50.4)
Net Cash Flows from (Used for) Financing Activities	3,479.1	(387.2)
Net Increase in Cash and Cash Equivalents	860.8	(79.8)
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	246.0	379.0
Cash, Cash Equivalents and Restricted Cash at End of Period	1,106.8	299.2
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	1,315.1	1,247.3
Net Cash Paid (Received) for Income Taxes	60.1	87.9
Cash Paid (Received) for Transferable Tax Credits	(102.2)	(163.7)
Noncash Acquisitions Under Finance Leases	30.0	24.5
Construction Expenditures Included in Current Liabilities as of September 30,	1,168.8	1,015.1
PSO
OPERATING ACTIVITIES
Net Income	221.0	222.0
Adjustments to Reconcile Net Income to Net Cash Flows from Operating Activities:
Depreciation and Amortization	202.7	202.1
Deferred Income Taxes	30.6	(12.7)
Allowance for Equity Funds Used During Construction	(7.3)	(4.6)
Mark-to-Market of Risk Management Contracts	(34.4)	(27.9)
Property Taxes	(16.1)	(14.8)
Deferred Fuel Over/Under-Recovery, Net	42.4	90.9
Change in Other Regulatory Assets	(57.2)	5.0
Change in Other Noncurrent Assets	(34.7)	(24.4)
Change in Other Noncurrent Liabilities	14.4	0.8
Changes in Certain Components of Working Capital:
Accounts Receivable, Net	(33.9)	33.3
Fuel, Materials and Supplies	4.1	12.2
Accounts Payable	142.0	9.6
Accrued Taxes, Net	76.1	54.0
Other Current Assets	(2.1)	(15.3)
Other Current Liabilities	23.8	(67.0)
Net Cash Flows from Operating Activities	571.4	463.2
INVESTING ACTIVITIES
Construction Expenditures	(534.1)	(402.9)
Change in Advances to Affiliates, Net	232.0	0.0
Acquisitions of Generation Facilities	(1,657.3)	0.0
Other Investing Activities	7.8	5.1
Net Cash Flows Used for Investing Activities	(1,951.6)	(397.8)
FINANCING ACTIVITIES
Capital Contribution from Parent	674.9	0.2
Issuance of Long-term Debt	793.1	0.0
Change in Advances from Affiliates, Net	39.7	44.1
Retirement of Long-term Debt	(125.4)	(0.4)
Principal Payments for Finance Lease Obligations	(2.4)	(2.5)
Dividends Paid on Common Stock	0.0	(105.0)
Other Financing Activities	1.6	0.5
Net Cash Flows from (Used for) Financing Activities	1,381.5	(63.1)
Net Increase in Cash and Cash Equivalents	1.3	2.3
Cash, Cash Equivalents and Restricted Cash at Beginning of Period	1.8	2.5
Cash, Cash Equivalents and Restricted Cash at End of Period	3.1	4.8
SUPPLEMENTARY INFORMATION
Cash Paid for Interest, Net of Capitalized Amounts	95.8	86.4
Net Cash Paid (Received) for Income Taxes	(86.2)	(27.2)
Cash Paid (Received) for Transferable Tax Credits	(48.0)	(76.9)
Noncash Acquisitions Under Finance Leases	2.1	1.2
Construction Expenditures Included in Current Liabilities as of September 30,	$ 90.7	$ 76.7