Related Party Disclosures (Tables)

3 Months Ended

Mar. 31, 2021

Related Party Transactions [Abstract]

Schedule of Related Party Transactions [Table Text Block]

The following table presents summarized related party transactions between OG&E and Enable during the three months ended March 31, 2021 and 2020.

	Three Months Ended
	March 31,
(In millions)	2021		2020
Operating revenues:
Electricity to power electric compression assets	$	2.6	$	3.7
Cost of sales:
Natural gas transportation services	$	4.7	$	4.7
Natural gas purchases (sales)	$	(12.2)	$	0.7