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Investment in Unconsolidated Affiliates Reconciliation of Equity in Earnings of Unconsolidated Affiliates (Tables) | 9 Months Ended
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Sep. 30, 2015
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items] |
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block] | The following table reconciles OGE Energy's equity in earnings of its unconsolidated affiliates for the three and nine months ended September 30, 2015 and 2014.
| Three Months Ended | Nine Months Ended
| September 30, | September 30,
Reconciliation of Equity in Earnings of Unconsolidated Affiliates | 2015 | 2014 | 2015 | 2014
(In millions) |  |
OGE's share of Enable Net Income (Loss) | $ | (80.3 | ) | $ | 36.4 |  | $ | (35.9 | ) | $ | 111.1 |
Amortization of basis difference | 3.5 |  | 3.4 |  | 10.6 |  | 10.4 |
Elimination of Enogex Holdings fair value and other adjustments | 4.9 |  | 4.9 |  | 13.3 |  | 10.4 |
OGE's Equity in earnings of unconsolidated affiliates | $ | (71.9 | ) | $ | 44.7 |  | $ | (12.0 | ) | $ | 131.9 |

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- Definition [Line Items] for Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table] + References No definition available. + Details
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- Definition [Table Text Block] for Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table] + References No definition available. + Details
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