Revenue Recognition (Tables)

3 Months Ended

Mar. 31, 2026

Revenues from Contract with Customers [Abstract]

Disaggregation of Revenue

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

	Three Months Ended March 31,
(In millions)	2026		2025
Residential	$	253.5	$	283.6
Commercial		206.4		206.6
Industrial		59.1		61.6
Oilfield		58.2		59.4
Public authorities and street light		60.3		60.5
System sales revenues		637.5		671.7
Provision for rate refund		—		3.0
Integrated market		47.3		21.3
Transmission		40.7		39.8
Other		11.2		5.3
Revenues from contracts with customers	$	736.7	$	741.1