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Related Party Disclosures (Tables) | 9 Months Ended
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Sep. 30, 2021
Related Party Transactions [Abstract] |
Schedule of Related Party Transactions [Table Text Block] | The following table presents summarized related party transactions between OG&E and Enable during the three and nine months ended September 30, 2021 and 2020.
| Three Months Ended | Nine Months Ended
| September 30, | September 30,
(In millions) | 2021 | 2020 | 2021 | 2020
Operating revenues: |  |  |  |
Electricity to power electric compression assets | $ | 4.1 |  | $ | 4.5 |  | $ | 10.0 |  | $ | 11.7 |
Fuel, purchased power and direct transmission expense: |  |  |  |
Natural gas transportation services | $ | 9.4 |  | $ | 9.3 |  | $ | 23.4 |  | $ | 23.4 |
Natural gas purchases (sales) | $ | (7.7) |  | $ | 3.2 |  | $ | (28.3) |  | $ | 2.2 |

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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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