Report of Business Segments (Tables)

3 Months Ended

Mar. 31, 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 months ended March 31, 2022 and 2021.

Three Months Ended March 31, 2022	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	589.3	$	—	$	—	$	—	$	589.3
Fuel, purchased power and direct transmission expense	255.7		—		—		—		255.7
Other operation and maintenance	115.5		0.7		(1.2)		—		115.0
Depreciation and amortization	107.4		—		—		—		107.4
Taxes other than income	26.8		—		1.3		—		28.1
Operating income (loss)	83.9		(0.7)		(0.1)		—		83.1
Gain (loss) on equity securities	—		282.3		—		—		282.3
Other income	0.7		8.7		—		(0.1)		9.3
Interest expense	38.2		—		2.0		(0.1)		40.1
Income tax expense (benefit)	7.4		60.2		(12.5)		—		55.1
Net income	$	39.0	$	230.1	$	10.4	$	—	$	279.5
Total assets	$	11,898.8	$	1,068.8	$	320.9	$	(194.9)	$	13,093.6

Three Months Ended March 31, 2021	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	1,630.6	$	—	$	—	$	—	$	1,630.6
Fuel, purchased power and direct transmission expense	1,346.8		—		—		—		1,346.8
Other operation and maintenance	110.3		0.4		(1.4)		—		109.3
Depreciation and amortization	98.7		—		—		—		98.7
Taxes other than income	25.7		0.1		1.4		—		27.2
Operating income (loss)	49.1		(0.5)		—		—		48.6
Equity in earnings of unconsolidated affiliates	—		53.2		—		—		53.2
Other income (expense)	1.7		(0.5)		(0.1)		(0.2)		0.9
Interest expense	38.4		—		1.2		(0.2)		39.4
Income tax expense (benefit)	1.2		14.3		(4.9)		—		10.6
Net income	$	11.2	$	37.9	$	3.6	$	—	$	52.7
Investment in unconsolidated affiliates	$	—	$	409.2	$	—	$	—	$	409.2
Total assets	$	11,248.2	$	415.4	$	521.6	$	(396.5)	$	11,788.7