Revenue from Contracts with Customers (Notes)

12 Months Ended

Dec. 31, 2018

Revenue from Contract with Customer [Abstract]

Revenue from Contract with Customer [Text Block]

Revenue Recognition

The following table disaggregates the Company's revenues from contracts with customers by customer classification. The Company's operating revenues disaggregated by customer classification can be found in "OG&E (Electric Utility) Results of Operations" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations."

(In millions)	Year Ended   December 31, 2018
Residential	$	877.8
Commercial	578.0
Industrial	191.1
Oilfield	150.2
Public authorities and street light	197.4
System sales revenues	1,994.5
Provision for rate refund	(6.0		)
Integrated market	48.7
Transmission	147.4
Other	27.1
Revenues from contracts with customers	$	2,211.7