Investment in Unconsolidated Affiliates (Tables)

6 Months Ended

Jun. 30, 2022

Reconciliation of Basis Difference [Line Items]

Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block]

The following table presents a reconciliation of OGE Energy's equity in earnings of unconsolidated affiliates for the three and six months ended June 30, 2021.

(In millions)	Three Months Ended			Six Months Ended
Enable net income	$	79.0		$	234.0
OGE Energy's percent ownership at period end	25.5		%	25.5		%
OGE Energy's portion of Enable net income	$	20.0		$	59.5
Amortization of basis difference and dilution recognition (A)	13.5			27.2
Equity in earnings of unconsolidated affiliates	$	33.5		$	86.7

(A)Includes loss on dilution, net of proportional basis difference recognition.

Schedule of Related Party Transactions [Table Text Block]

The following table presents summarized related party transactions between OG&E and Enable during the three and six months ended June 30, 2021.

(In millions)	Three Months Ended		Six Months Ended
Operating revenues:
Electricity to power electric compression assets	$	3.3	$	5.9
Fuel, purchased power and direct transmission expense:
Natural gas transportation services	$	9.3	$	14.0
Natural gas purchases (sales)	$	(8.4)	$	(20.6)