XML 1039 R50.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Summary of Significant Accounting Policies Property, Plant and Equipment (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | $ 9,651.6 |  | $ 11,891.9 |  |
Accumulated Depreciation | 2,978.8 |  | 3,547.1 |  |
Property, Plant and Equipment, Net | 6,672.8 |  | 8,344.8 |  |
Proceeds from insurance | 0 |  | 7.6 |  | 7.4
Gain on insurance proceeds | 0 |  | (7.5) |  | (3.0)
Capitalized Computer Software, Gross | 24.0 |  | 33.1 |  |
Capitalized Computer Software, Amortization | 11.2 |  | 14.1 |  | 9.2
McClain Plant [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress | 0.1 |  | 0.1 |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 77.00% | [1] | 77.00% | [2] |
Property, Plant and Equipment, Gross | 180.8 | [1] | 182.1 | [2] |
Accumulated Depreciation | 62.1 | [1] | 56.3 | [2] |
Property, Plant and Equipment, Net | 118.7 | [1] | 125.8 | [2] |
Redbud Plant [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Jointly Owned Utility Plant, Ownership Amount of Construction Work in Progress | 39.5 |  | 0.3 |  |
Jointly Owned Utility Plant, Proportionate Ownership Share | 51.00% | [1],[3] | 51.00% | [2],[4] |
Property, Plant and Equipment, Gross | 498.9 | [1],[3] | 458.5 | [2],[4] |
Accumulated Depreciation | 89.7 | [1],[3] | 69.5 | [2],[4] |
Property, Plant and Equipment, Net | 409.2 | [1],[3] | 389.0 | [2],[4] |
Amount of Acquisition Adjustments | 148.3 |  | 148.3 |  |
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation | 28.8 |  | 23.3 |  |
OGE Energy [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 152.4 |  | 142.1 |  |
Accumulated Depreciation | 114.2 |  | 103.2 |  |
Property, Plant and Equipment, Net | 38.2 |  | 38.9 |  |
Capitalized Computer Software, Gross | 7.2 |  | 11.6 |  |
Capitalized Computer Software, Amortization | 6.4 |  | 6.8 |  | 6.4
OGE Energy [Member] | Total Property Plant and Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 152.4 |  | 142.1 |  |
Accumulated Depreciation | 114.2 |  | 103.2 |  |
Property, Plant and Equipment, Net | 38.2 |  | 38.9 |  |
Og and E [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Capitalized Computer Software, Gross | 16.8 |  | 17.6 |  |
Capitalized Computer Software, Amortization | 4.0 |  | 4.2 |  | 1.8
Og and E [Member] | Total Property Plant and Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 9,499.2 |  | 8,749.7 |  |
Accumulated Depreciation | 2,864.6 |  | 2,705.6 |  |
Property, Plant and Equipment, Net | 6,634.6 |  | 6,044.1 |  |
Og and E [Member] | Electric Transmission and Distribution [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 3,403.8 |  | 3,222.7 |  |
Accumulated Depreciation | 1,028.2 |  | 969.6 |  |
Property, Plant and Equipment, Net | 2,375.6 |  | 2,253.1 |  |
Og and E [Member] | Electric Generation Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 3,551.0 | [5] | 3,446.6 | [6] |
Accumulated Depreciation | 1,306.1 | [5] | 1,242.4 | [6] |
Property, Plant and Equipment, Net | 2,244.9 | [5] | 2,204.2 | [6] |
Amount of Acquisition Adjustments | 148.3 |  | 148.3 |  |
Public Utilities, Property, Plant and Equipment, Amount of Acquisition Adjustments, Related Accumulated Depreciation | 28.8 |  | 23.3 |  |
Og and E [Member] | Transmission Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Amount of Acquisition Adjustments | 3.3 |  | 3.3 |  |
Amount of Acquistion Adjustments Related Accumulated Amortization | 0.3 |  | 0.3 |  |
Og and E [Member] | Electric Transmission [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 2,163.7 | [7] | 1,712.6 | [7] |
Accumulated Depreciation | 385.0 | [7] | 359.8 | [7] |
Property, Plant and Equipment, Net | 1,778.7 | [7] | 1,352.8 | [7] |
Og and E [Member] | Finite-Lived Intangible Assets, Major Class Name [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 50.5 |  | 50.2 |  |
Accumulated Depreciation | 27.1 |  | 25.0 |  |
Property, Plant and Equipment, Net | 23.4 |  | 25.2 |  |
Og and E [Member] | Property, Plant and Equipment, Other Types [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross | 330.2 |  | 317.6 |  |
Accumulated Depreciation | 118.2 |  | 108.8 |  |
Property, Plant and Equipment, Net | 212.0 |  | 208.8 |  |
Enogex [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Capitalized Computer Software, Gross | 0 |  | 3.9 |  |
Capitalized Computer Software, Amortization | 0.8 |  | 3.1 |  | 1.0
Enogex [Member] | Total Property Plant and Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross |  |  | 3,000.1 |  |
Accumulated Depreciation |  |  | 738.3 |  |
Property, Plant and Equipment, Net |  |  | 2,261.8 |  |
Enogex [Member] | Transportation and Storage [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross |  |  | 988.6 |  |
Accumulated Depreciation |  |  | 292.7 |  |
Property, Plant and Equipment, Net |  |  | 695.9 |  |
Enogex [Member] | Gas Gathering and Processing Equipment [Member] |  |  |  |  |
Property, Plant and Equipment [Line Items] |  |  |  |  |
Property, Plant and Equipment, Gross |  |  | 2,011.5 |  |
Accumulated Depreciation |  |  | 445.6 |  |
Property, Plant and Equipment, Net |  |  | $ 1,565.9 |  |
[1] | Construction work in progress was $0.1 million and $39.5 million for the McClain and Redbud Plants, respectively.
[2] | Construction work in progress was $0.1 million and $0.3 million for the McClain and Redbud Plants, respectively.
[3] | This amount includes a plant acquisition adjustment of $148.3 million and accumulated amortization of $28.8 million.
[4] | This amount includes a plant acquisition adjustment of $148.3 million and accumulated amortization of $23.3 million.
[5] | This amount includes a plant acquisition adjustment of $148.3 million and accumulated amortization of $28.8 million.
[6] | This amount includes a plant acquisition adjustment of $148.3 million and accumulated amortization of $23.3 million.
[7] | This amount includes a plant acquisition adjustment of $3.3 million and accumulated amortization of $0.3 million.

X
- Definition The amount of acquisition adjustments accumulated amortization included in property, plant and equipment (PPE) for utilities + References No definition available. + Details
Name: | oge_AmountOfAcquistionAdjustmentsRelatedAccumulatedAmortization
Namespace Prefix: | oge_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.14) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 14 -Article 5 + Details
Name: | us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition For each income statement presented, the amount charged to expense for amortization of capitalized computer software costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
Name: | us-gaap_CapitalizedComputerSoftwareAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The carrying amount of capitalized computer software costs net of accumulated amortization as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128487-111756 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 985 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6501960&loc=d3e128462-111756 + Details
Name: | us-gaap_CapitalizedComputerSoftwareNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6365675&loc=d3e16285-107787 + Details
Name: | us-gaap_GainOnBusinessInterruptionInsuranceRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The period end amount of construction work in progress at a jointly owned electricity generation plant. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 10.C) -URI http://asc.fasb.org/extlink&oid=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + Details
Name: | us-gaap_JointlyOwnedUtilityPlantOwnershipAmountOfConstructionWorkInProgress
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The proportionate share of interest (percent) in a jointly owned utility plant. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 980 -SubTopic 360 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 10.C) -URI http://asc.fasb.org/extlink&oid=6500719&loc=d3e659983-123033 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 10 -Section C + Details
Name: | us-gaap_JointlyOwnedUtilityPlantProportionateOwnershipShare
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the amounts received by the insured under the terms of an insurance contract settlement. This element pertains only to insurance proceeds related to investments, for example fixed assets. It excludes insurance settlements classified as operating cash flows. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
Name: | us-gaap_ProceedsFromInsuranceSettlementInvestingActivities
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_PropertyPlantAndEquipmentGross
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.13) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 13 -Subparagraph a -Article 5 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 8 -Article 7 + Details
Name: | us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of acquisition adjustments included in property, plant and equipment (PPE) for utilities. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustments1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of increase (decrease) for acquisition adjustments on accumulated depreciation included in long-lived, physical assets used to produce goods and services and not intended for resale for utilities. + References No definition available. + Details
Name: | us-gaap_PublicUtilitiesPropertyPlantAndEquipmentAmountOfAcquisitionAdjustmentsRelatedAccumulatedDepreciation1
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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