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v3.21.1

Investment in Unconsolidated Affiliates (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Dec. 31, 2020
Expected Settlement Charge | $ 18.3 |  |  |
Limited Partner Units Owned | 111.0 |  |  |
Distribution Made to Limited Partner, Distributions Declared, Per Unit | $ 0.16525 |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest | 25.50% | 25.50% |  |
Equity in earnings (losses) of unconsolidated affiliates | $ 53.2 | $ (746.5) | [1] |
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity | 1,318.6 |  |  | $ 1,332.3
Enable Midstream Partners [Member] |  |  |  |
Distributions from unconsolidated affiliates | $ 18.3 | $ 36.7 |  |
OGE Holdings [Member] |  |  |  |
Limited Liability Company or Limited Partnership, Members or Limited Partners, Ownership Interest | 25.50% |  |  |
Energy Transfer |  |  |  |
Common Stock, Terms of Conversion | 0.8595 |  |  |
Enable Midstream Partners [Member] |  |  |  |
Share Price | $ 6.48 |  |  |
[1] | In 2020, OGE Energy recorded a $780.0 million impairment on its investment in Enable, as further discussed in Note 4

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