CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 352.6	$ 165.6
Depreciation and amortization	219.0	201.6
Deferred income taxes and other tax credits, net	(33.5)	15.5
Equity Securities, FV-NI, Gain (Loss)	(242.7)	0.0
Equity in earnings of unconsolidated affiliates	0.0	(86.7)
Distributions from unconsolidated affiliates	0.0	36.7
Allowance for equity funds used during construction	(2.2)	(2.9)
Stock-based compensation expense	4.6	4.8
Regulatory assets	(46.5)	(879.5)
Regulatory liabilities	(43.2)	(34.4)
Other assets	19.4	(5.8)
Other liabilities	(11.1)	(43.3)
Change in certain current assets and liabilities:
Accounts receivable and accrued unbilled revenues, net	(101.5)	(41.9)
Increase (Decrease) in Income Taxes Receivable	0.1	4.0
Fuel, materials and supplies inventories	(53.0)	(10.4)
Fuel recoveries	(119.8)	(24.3)
Other current assets	(42.2)	(5.6)
Accounts payable	19.5	(71.1)
Other current liabilities	88.6	9.9
Net cash provided from (used in) operating activities	8.1	(767.8)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(450.8)	(353.5)
Proceeds from Sale of Equity Securities, FV-NI	627.4	0.0
Other	(2.9)	(3.3)
Net cash provided from (used in) investing activities	173.7	(356.8)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from Issuance of Long-term Debt	49.8	999.6
Increase (decrease) in short-term debt	(61.5)	289.5
Dividends paid on common stock	(164.4)	(162.2)
Net cash (used in) provided from financing activities	(176.9)	1,123.5
NET CHANGE IN CASH AND CASH EQUIVALENTS	4.9	(1.1)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0.0	1.1
CASH AND CASH EQUIVALENTS AT END OF PERIOD	4.9	0.0
Proceeds from (Payments for) Other Financing Activities	(0.8)	(3.4)
Net Income (Loss) Attributable to Parent	352.6	165.6
OG&E [Member]
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Depreciation and amortization	219.0	201.6
Deferred income taxes and other tax credits, net	182.2	10.3
Allowance for equity funds used during construction	(2.2)	(2.9)
Stock-based compensation expense	1.5	1.0
Regulatory assets	(46.5)	(879.5)
Regulatory liabilities	(43.2)	(34.4)
Other assets	1.3	(1.4)
Other liabilities	(1.1)	(38.3)
Change in certain current assets and liabilities:
Accounts receivable and accrued unbilled revenues, net	(101.7)	(43.9)
Fuel, materials and supplies inventories	(53.0)	(10.4)
Fuel recoveries	(119.8)	(24.3)
Other current assets	(39.8)	(1.3)
Accounts payable	35.1	(66.4)
Increase (Decrease) in Income Taxes Payable	(155.9)	2.6
Other current liabilities	16.6	8.2
Net cash provided from (used in) operating activities	32.2	(782.8)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(450.8)	(353.5)
Net cash provided from (used in) investing activities	(450.8)	(353.5)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from Issuance of Long-term Debt	0.0	499.8
Increase (decrease) in short-term debt	90.9	0.0
Increase (Decrease) in Due from Related Parties, Current	332.6	106.5
Proceeds from Contributions from Parent	0.0	530.0
Net cash (used in) provided from financing activities	423.5	1,136.3
NET CHANGE IN CASH AND CASH EQUIVALENTS	4.9	0.0
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	4.9	0.0
Net Income (Loss) Attributable to Parent	$ 139.7	$ 96.3