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Investment in Unconsolidated Affiliates Reconciliation of Equity in Earnings of Unconsolidated Affiliates (Tables) | 3 Months Ended
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Mar. 31, 2014
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Line Items] |
Reconciliation of Equity in Earnings of Unconsolidated Affiliates [Table Text Block] |
| Three Months Ended
Reconciliation of Equity in Earnings of Unconsolidated Affiliates | March 31, 2014
| (In millions)
OGE's 28.5% share of Enable Net Income | $ | 42.5 |
Amortization of basis difference | 3.6 |
Elimination of Enogex Holdings fair value and other adjustments | 1.8 |
OGE's Equity in earnings of unconsolidated affiliates | $ | 47.9 |

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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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