Report of Business Segments (Tables)

6 Months Ended

Jun. 30, 2022

Segment Reporting [Abstract]

Schedule of Segment Reporting Information, by Segment [Table Text Block]

The following tables present the results of OGE Energy's business segments for the three and six months ended June 30, 2022 and 2021.

Six Months Ended June 30, 2022	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	1,393.0	$	—	$	—	$	—	$	1,393.0
Fuel, purchased power and direct transmission expense	649.0		—		—		—		649.0
Other operation and maintenance	233.8		1.2		(1.9)		—		233.1
Depreciation and amortization	219.0		—		—		—		219.0
Taxes other than income	50.1		0.1		2.0		—		52.2
Operating income (loss)	241.1		(1.3)		(0.1)		—		239.7
Gain on equity securities	—		242.7		—		—		242.7
Other income	0.4		21.1		—		(0.5)		21.0
Interest expense	78.0		—		5.0		(0.5)		82.5
Income tax expense (benefit)	23.8		51.3		(6.8)		—		68.3
Net income	$	139.7	$	211.2	$	1.7	$	—	$	352.6
Total assets	$	12,317.2	$	401.7	$	751.9	$	(632.8)	$	12,838.0

Six Months Ended June 30, 2021	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	2,208.0	$	—	$	—	$	—	$	2,208.0
Fuel, purchased power and direct transmission expense	1,546.8		—		—		—		1,546.8
Other operation and maintenance	228.6		2.0		(2.1)		—		228.5
Depreciation and amortization	201.6		—		—		—		201.6
Taxes other than income	50.7		0.2		2.1		—		53.0
Operating income (loss)	180.3		(2.2)		—		—		178.1
Equity in earnings of unconsolidated affiliates	—		86.7		—		—		86.7
Other income (expense)	2.9		(0.7)		(0.6)		(0.8)		0.8
Interest expense	76.3		—		3.8		(0.8)		79.3
Income tax expense (benefit)	10.6		13.7		(3.6)		—		20.7
Net income (loss)	$	96.3	$	70.1	$	(0.8)	$	—	$	165.6
Investment in unconsolidated affiliates	$	—	$	425.4	$	—	$	—	$	425.4
Total assets	$	11,459.3	$	427.8	$	127.4	$	(115.0)	$	11,899.5