Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2020

Related Party Transaction [Line Items]

Schedule of Related Party Transactions [Table Text Block]

The following table summarizes related party transactions between OG&E and Enable during the three and nine months ended September 30, 2020 and 2019.

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
(In millions)	2020		2019		2020		2019
Operating revenues:
Electricity to power electric compression assets	$	4.5	$	4.5	$	11.7	$	12.1
Cost of sales:
Natural gas transportation services	$	9.3	$	9.4	$	23.4	$	33.5
Natural gas purchases (sales)	$	3.2	$	(1.1)	$	2.2	$	(5.4)