Report of Business Segments

6 Months Ended

Jun. 30, 2021

Segment Reporting [Abstract]

Report of Business Segments

Report of Business SegmentsOGE Energy reports its operations in two business segments: (i) the electric utility segment, which is engaged in the generation, transmission, distribution and sale of electric energy and (ii) the natural gas midstream operations segment. Other operations primarily includes the operations of the holding company. Intersegment revenues are recorded at prices comparable to those of unaffiliated customers and are affected by regulatory considerations. The following tables present the results of OGE Energy's business segments for the three and six months ended June 30, 2021 and 2020.

Three Months Ended June 30, 2021	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	577.4	$	—	$	—	$	—	$	577.4
Fuel, purchased power and direct transmission expense	200.0		—		—		—		200.0
Other operation and maintenance	118.3		1.6		(0.7)		—		119.2
Depreciation and amortization	102.9		—		—		—		102.9
Taxes other than income	25.0		0.1		0.7		—		25.8
Operating income (loss)	131.2		(1.7)		—		—		129.5
Equity in earnings of unconsolidated affiliates	—		33.5		—		—		33.5
Other income (expense)	1.2		(0.2)		(0.5)		(0.6)		(0.1)
Interest expense	37.9		—		2.6		(0.6)		39.9
Income tax expense (benefit)	9.4		(0.6)		1.3		—		10.1
Net income (loss)	$	85.1	$	32.2	$	(4.4)	$	—	$	112.9
Investment in unconsolidated affiliates	$	—	$	425.4	$	26.3	$	—	$	451.7
Total assets	$	11,459.3	$	427.8	$	127.4	$	(115.0)	$	11,899.5

Three Months Ended June 30, 2020	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	503.5	$	—	$	—	$	—	$	503.5
Fuel, purchased power and direct transmission expense	137.4		—		—		—		137.4
Other operation and maintenance	117.7		0.3		(0.5)		—		117.5
Depreciation and amortization	97.3		—		—		—		97.3
Taxes other than income	25.0		0.1		0.8		—		25.9
Operating income (loss)	126.1		(0.4)		(0.3)		—		125.4
Equity in earnings of unconsolidated affiliates	—		26.9		—		—		26.9
Other income (expense)	0.5		—		1.7		(0.2)		2.0
Interest expense	39.3		—		1.7		(0.2)		40.8
Income tax expense	8.4		7.5		11.7		—		27.6
Net income (loss)	$	78.9	$	19.0	$	(12.0)	$	—	$	85.9
Investment in unconsolidated affiliates	$	—	$	356.4	$	20.1	$	—	$	376.5
Total assets	$	10,367.6	$	360.2	$	109.1	$	(397.8)	$	10,439.1

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	$	26.3	$	—	$	451.7
Total assets	$	11,459.3	$	427.8	$	127.4	$	(115.0)	$	11,899.5

Six Months Ended June 30, 2020	Electric Utility		Natural Gas Midstream Operations		Other Operations		Eliminations		Total
(In millions)
Operating revenues	$	934.8	$	—	$	—	$	—	$	934.8
Fuel, purchased power and direct transmission expense	272.4		—		—		—		272.4
Other operation and maintenance	238.7		0.9		(2.1)		—		237.5
Depreciation and amortization	191.7		—		—		—		191.7
Taxes other than income	48.9		0.2		2.4		—		51.5
Operating income (loss)	183.1		(1.1)		(0.3)		—		181.7
Equity in losses of unconsolidated affiliates (A)	—		(719.6)		—		—		(719.6)
Other income (expense)	2.3		—		3.0		(1.2)		4.1
Interest expense	76.2		—		4.1		(1.2)		79.1
Income tax expense (benefit)	10.4		(171.7)		(45.7)		—		(207.0)
Net income (loss)	$	98.8	$	(549.0)	$	44.3	$	—	$	(405.9)
Investment in unconsolidated affiliates	$	—	$	356.4	$	20.1	$	—	$	376.5
Total assets	$	10,367.6	$	360.2	$	109.1	$	(397.8)	$	10,439.1

(A) In 2020, OGE Energy recorded a $780.0 million impairment on its investment in Enable, as further discussed in Note 4.