Investment in Unconsolidated Affiliate (Tables)

12 Months Ended

Dec. 31, 2023

Equity Method Investments and Joint Ventures [Abstract]

Reconciliation of Equity in Earnings (Losses) of Unconsolidated Affiliates

The following table presents a reconciliation of OGE Energy's equity in earnings of unconsolidated affiliates for the period of January 1, 2021 through December 2, 2021.

(In millions)
Enable net income used to calculate OGE Energy's equity in earnings	$	470.0
OGE Energy's percent ownership at period end		25.5	%
OGE Energy's portion of Enable net income	$	119.8
Amortization of basis difference and dilution recognition (A)		50.0
Equity in earnings of unconsolidated affiliates	$	169.8

(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 period of January 1, 2021 through December 2, 2021.

(In millions)
Operating revenues:
Electricity to power electric compression assets	$	13.3
Fuel, purchased power and direct transmission expense:
Natural gas transportation services	$	32.7
Natural gas sales	$	(33.5	)