Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2020

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Regulatory Assets and Liabilities [Table Text Block]

The following table is a summary of OG&E's regulatory assets and liabilities.

	September 30,		December 31,
(In millions)	2020		2019
REGULATORY ASSETS
Current:
SPP cost tracker under recovery (A)	$	4.6	$	—
Generation Capacity Replacement rider under recovery (A)	1.2		3.7
Fuel clause under recoveries	—		39.5
Other (A)	9.7		5.5
Total current regulatory assets	$	15.5	$	48.7
Non-current:
Benefit obligations regulatory asset	$	150.2	$	167.2
Deferred storm expenses	70.2		65.5
Sooner Dry Scrubbers	19.9		20.6
Smart Grid	13.1		18.4
Unamortized loss on reacquired debt	9.9		10.6
Arkansas deferred pension expenses	8.4		8.0
Pension tracker	8.1		2.3
COVID-19 deferred expenses	4.9		—
Other	16.9		13.4
Total non-current regulatory assets	$	301.6	$	306.0
REGULATORY LIABILITIES
Current:
Fuel clause over recoveries	$	39.6	$	4.8
Oklahoma demand program rider over recovery (B)	5.8		2.0
Reserve for tax refund and interim surcharge (B)	1.3		12.7
SPP cost tracker over recovery (B)	—		2.6
Other (B)	4.9		6.9
Total current regulatory liabilities	$	51.6	$	29.0
Non-current:
Income taxes refundable to customers, net	$	875.5	$	899.2
Accrued removal obligations, net	318.9		318.5
Other	5.0		5.8
Total non-current regulatory liabilities	$	1,199.4	$	1,223.5

(A)Included in Other Current Assets in the Condensed Balance Sheets.

(B)Included in Other Current Liabilities in the Condensed Balance Sheets.