Revenues from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2019

Revenues from Contracts with Customers [Abstract]

Disaggregation of Revenue [Table Text Block]

The following table disaggregates OG&E's revenues from contracts with customers by customer classification. OG&E's operating revenues disaggregated by customer classification can be found in "Results of Operations" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."

	Three Months Ended						Six Months Ended
	June 30,						June 30,
(In millions)	2019			2018			2019			2018
Residential	$	182.3		$	217.3		$	373.5		$	413.5
Commercial	115.4			135.1			210.8			235.9
Industrial	52.9			57.0			105.2			107.4
Oilfield	48.9			45.7			98.3			87.8
Public authorities and street light	44.4			51.1			84.5			92.8
System sales revenues	443.9			506.2			872.3			937.4
Provision for rate refund	(0.5		)	(16.5		)	(0.6		)	(19.7		)
Integrated market	10.3			13.1			17.0			21.8
Transmission	39.8			40.2			75.9			76.0
Other	7.6			4.7			13.9			10.1
Revenues from contracts with customers	$	501.1		$	547.7		$	978.5		$	1,025.6