Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 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.

	March 31,		December 31,
(In millions)	2020		2019
REGULATORY ASSETS
Current:
Generation Capacity Replacement rider under recovery (A)	$	4.6	$	3.7
Fuel clause under recoveries	—		39.5
Other (A)	8.2		5.5
Total current regulatory assets	$	12.8	$	48.7
Non-current:
Benefit obligations regulatory asset	$	165.2	$	167.2
Deferred storm expenses	63.9		65.5
Sooner Dry Scrubbers	20.4		20.6
Smart Grid	16.6		18.4
Unamortized loss on reacquired debt	10.4		10.6
Arkansas deferred pension expenses	7.8		8.0
Pension tracker	0.9		2.3
Other	14.8		13.4
Total non-current regulatory assets	$	300.0	$	306.0
REGULATORY LIABILITIES
Current:
Fuel clause over recoveries	$	15.6	$	4.8
Reserve for tax refund and interim surcharge (B)	4.8		12.7
Oklahoma demand program rider over recovery (B)	4.4		2.0
SPP cost tracker over recovery (B)	—		2.6
Other (B)	5.6		6.9
Total current regulatory liabilities	$	30.4	$	29.0
Non-current:
Income taxes refundable to customers, net	$	890.9	$	899.2
Accrued removal obligations, net	319.7		318.5
Other	5.5		5.8
Total non-current regulatory liabilities	$	1,216.1	$	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.