XML 48 R24.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Summary of Significant Accounting Policies (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2014
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 at:
(In millions) | March 31, 2014 | December 31, 2013
Regulatory Assets |  |
Current |  |
Fuel clause under recoveries | $ | 62.0 |  | $ | 26.2 |
Oklahoma demand program rider under recovery (A) | 8.8 |  | 10.6 |
Crossroads wind farm rider under recovery (A) | — |  | 4.7 |
Other (A) | 9.2 |  | 7.3 |
Total Current Regulatory Assets | $ | 80.0 |  | $ | 48.8 |
Non-Current |  |  |  |
Benefit obligations regulatory asset | $ | 224.8 |  | $ | 227.4 |
Income taxes recoverable from customers, net | 56.4 |  | 56.5 |
Smart Grid | 44.1 |  | 44.2 |
Deferred storm expenses | 21.5 |  | 21.6 |
Unamortized loss on reacquired debt | 11.5 |  | 11.8 |
Pension tracker | — |  | 1.4 |
Other | 16.1 |  | 16.2 |
Total Non-Current Regulatory Assets | $ | 374.4 |  | $ | 379.1 |
Regulatory Liabilities |  |  |  |
Current |  |  |  |
Smart Grid rider over recovery (B) | $ | 15.7 |  | $ | 16.7 |
Fuel clause over recoveries | — |  | 0.4 |
Other (B) | 2.6 |  | 3.1 |
Total Current Regulatory Liabilities | $ | 18.3 |  | $ | 20.2 |
Non-Current |  |  |  |
Accrued removal obligations, net | $ | 230.8 |  | $ | 227.7 |
Deferred pension credits | 3.7 |  | 6.5 |
Pension tracker | 3.1 |  | — |
Total Non-Current Regulatory Liabilities | $ | 237.6 |  | $ | 234.2 |
(A) | Included in Other Current Assets on the Condensed Consolidated Balance Sheets.
(B) | Included in Other Current Liabilities on the Condensed Consolidated Balance Sheets.
Schedule of Change in Asset Retirement Obligation [Table Text Block] | The following table summarizes changes to the Company's asset retirement obligations during the three months ended March 31, 2014 and 2013.
| Three Months Ended
| March 31,
(In millions) | 2014 | 2013
Balance at January 1 | $ | 55.2 |  | $ | 54.0 |
Liabilities settled | — |  | (0.1 | )
Accretion expense | 0.6 |  | 0.6 |
Balance at March 31 | $ | 55.8 |  | $ | 54.5 |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | The following table summarizes changes in the components of accumulated other comprehensive loss attributable to OGE Energy during the three months ended March 31, 2014. All amounts below are presented net of tax and noncontrolling interest.
| Pension Plan and Restoration of Retirement Income Plan |  | Postretirement Benefit Plans |  |
| Net loss | Prior service cost |  | Net loss | Prior service cost | Deferred interest rate swap hedging losses | Total
Balance at December 31, 2013 | $ | (27.4 | ) | $ | 0.1 |  |  | $ | (5.8 | ) | $ | 5.1 |  | $ | (0.2 | ) | $ | (28.2 | )
Amounts reclassified from accumulated other comprehensive income (loss) | 0.4 |  | — |  |  | 0.2 |  | (0.4 | ) | 0.1 |  | 0.3 |
Net current period other comprehensive income (loss) | 0.4 |  | — |  |  | 0.2 |  | (0.4 | ) | 0.1 |  | 0.3 |
Balance at March 31, 2014 | $ | (27.0 | ) | $ | 0.1 |  |  | $ | (5.6 | ) | $ | 4.7 |  | $ | (0.1 | ) | $ | (27.9 | )
Schedule of Amounts Reclassified out of Accumulated Other Comprehensive Income [Table Text Block] | The following table summarizes significant amounts reclassified out of accumulated other comprehensive loss by the respective line items in net income during the three months ended March 31, 2014.
Details about Accumulated Other Comprehensive Loss Components | Amount Reclassified from Accumulated Other Comprehensive Income (Loss) | Affected Line Item in the Statement Where Net Income is Presented
| Three Months Ended |
| March 31, 2014 |
Losses on cash flow hedges |  |
Interest rate swap | $ | (0.2 | ) | Interest expense
| (0.2 | ) | Total before tax
| (0.1 | ) | Tax benefit
| $ | (0.1 | ) | Net of tax
Amortization of defined benefit pension items |  |
Actuarial losses | $ | (0.7 | ) | (A)
| (0.7 | ) | Total before tax
| (0.3 | ) | Tax benefit
| $ | (0.4 | ) | Net of tax
Amortization of postretirement benefit plan items |  |
Actuarial losses | $ | (0.3 | ) | (A)
Prior service credit | 0.7 |  | (A)
| 0.4 |  | Total before tax
| 0.2 |  | Tax expense
| $ | 0.2 |  | Net of tax
Total reclassifications for the period | $ | (0.3 | ) | Net of tax
(A) | These accumulated other comprehensive income (loss) components are included in the computation of net periodic benefit cost (see Note 11 for additional information).

X
- Definition A table of assets and liabilities that are created when regulatory agencies permit public utilities to defer certain costs and recognition of certain revenues that are included in rate-setting to the balance sheet. + References No definition available. + Details
Name: | oge_ScheduleOfRegulatoryAssetsAndLiabilitiesTableTextBlock
Namespace Prefix: | oge_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
Name: | us-gaap_ReclassificationOutOfAccumulatedOtherComprehensiveIncomeTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=28358780&loc=SL7669686-108580 + Details
Name: | us-gaap_ScheduleOfAccumulatedOtherComprehensiveIncomeLossTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Tabular disclosure of the changes in carrying amount of a liability for asset retirement obligations, for changes such as new obligations, changes in estimates of existing obligations, spending on existing obligations, property dispositions, and foreign currency translation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 30 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13201-110859 + Details
Name: | us-gaap_ScheduleOfChangeInAssetRetirementObligationTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration