CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2022	Sep. 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	$ 615.4	$ 418.1
Depreciation and amortization	341.4	310.2
Deferred income taxes and other tax credits, net	(175.9)	40.9
Equity Securities, FV-NI, Gain (Loss)	(282.1)	0.0
Equity in earnings of unconsolidated affiliates	0.0	(127.9)
Distributions from unconsolidated affiliates	0.0	55.0
Allowance for equity funds used during construction	(4.6)	(4.8)
Stock-based compensation expense	6.9	7.1
Regulatory assets	702.1	(881.5)
Regulatory liabilities	(71.7)	(50.0)
Other assets	21.0	(6.7)
Other liabilities	(19.3)	(41.6)
Change in certain current assets and liabilities:
Accounts receivable and accrued unbilled revenues, net	(174.9)	(99.4)
Increase (Decrease) in Income Taxes Receivable	2.5	7.6
Fuel, materials and supplies inventories	(84.5)	8.7
Fuel recoveries	(355.3)	(126.8)
Other current assets	(30.7)	(4.9)
Accounts payable	16.3	(41.4)
Other current liabilities	261.2	43.3
Net cash provided from (used in) operating activities	767.8	(494.1)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(690.8)	(540.6)
Proceeds from Sale of Equity Securities, FV-NI	1,067.2	0.0
Other	(3.5)	(6.3)
Net cash provided from (used in) investing activities	372.9	(546.9)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from Issuance of Long-term Debt	49.8	999.6
Increase (decrease) in short-term debt	(486.9)	288.2
Payment of long-term debt	(0.1)	(0.1)
Dividends paid on common stock	(246.4)	(242.8)
Net cash (used in) provided from financing activities	(684.5)	1,041.4
NET CHANGE IN CASH AND CASH EQUIVALENTS	456.2	0.4
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0.0	1.1
CASH AND CASH EQUIVALENTS AT END OF PERIOD	456.2	1.5
Proceeds from (Payments for) Other Financing Activities	(0.9)	(3.5)
Net Income (Loss) Attributable to Parent	615.4	418.1
OG&E [Member]
Adjustments to reconcile net income to net cash provided from (used in) operating activities:
Depreciation and amortization	341.4	310.2
Deferred income taxes and other tax credits, net	203.0	32.1
Allowance for equity funds used during construction	(4.6)	(4.8)
Stock-based compensation expense	2.3	1.6
Regulatory assets	702.1	(881.5)
Regulatory liabilities	(71.7)	(50.0)
Other assets	1.3	(0.9)
Other liabilities	(10.6)	(38.2)
Change in certain current assets and liabilities:
Accounts receivable and accrued unbilled revenues, net	(174.3)	(100.8)
Fuel, materials and supplies inventories	(84.5)	8.7
Fuel recoveries	(355.3)	(126.8)
Other current assets	(29.9)	(3.2)
Accounts payable	12.4	(39.3)
Increase (Decrease) in Income Taxes Payable	(136.2)	7.2
Other current liabilities	55.7	36.0
Net cash provided from (used in) operating activities	843.9	(529.6)
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures (less allowance for equity funds used during construction)	(690.8)	(540.6)
Net cash provided from (used in) investing activities	(690.8)	(540.6)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from Issuance of Long-term Debt	0.0	499.8
Increase (Decrease) in Due from Related Parties, Current	(150.9)	87.0
Proceeds from Contributions from Parent	0.0	530.0
Payment of long-term debt	(0.1)	0.1
Dividends paid on common stock	0.0	(45.0)
Net cash (used in) provided from financing activities	(151.0)	1,071.7
NET CHANGE IN CASH AND CASH EQUIVALENTS	2.1	1.5
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	0.0	0.0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	2.1	1.5
Net Income (Loss) Attributable to Parent	$ 392.8	$ 320.1