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Revenue from Contracts with Customers (Tables) | 12 Months Ended
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Dec. 31, 2018
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | The following table disaggregates the Company's revenues from contracts with customers by customer classification. The Company's operating revenues disaggregated by customer classification can be found in "OG&E (Electric Utility) Results of Operations" in "Item 7. Management's Discussion and Analysis of Financial Condition and Results of Operations."
(In millions) | Year Ended December 31, 2018
Residential | $ | 877.8 |
Commercial | 578.0 |
Industrial | 191.1 |
Oilfield | 150.2 |
Public authorities and street light | 197.4 |
System sales revenues | 1,994.5 |
Provision for rate refund | (6.0 | )
Integrated market | 48.7 |
Transmission | 147.4 |
Other | 27.1 |
Revenues from contracts with customers | $ | 2,211.7 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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