XML 38 R28.htm IDEA: XBRL DOCUMENT
v3.19.1

Revenue from Contracts with Customers (Tables) | 3 Months Ended
--- | ---
Mar. 31, 2019
Disaggregation of Revenue [Line Items] |
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" within "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."
| Three Months Ended March 31,
(In millions) | 2019 | 2018
Residential | $ | 191.2 |  | $ | 196.3 |
Commercial | 115.1 |  | 117.8 |
Industrial | 43.1 |  | 41.7 |
Oilfield | 38.9 |  | 33.7 |
Public authorities and street light | 40.1 |  | 41.7 |
System sales revenues | 428.4 |  | 431.2 |
Provision for rate refund | (0.1 | ) | (3.2 | )
Integrated market | 6.7 |  | 8.6 |
Transmission | 36.1 |  | 35.8 |
Other | 6.3 |  | 5.5 |
Revenues from contracts with customers | $ | 477.4 |  | $ | 477.9 |

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_DisaggregationOfRevenueLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- 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
Name: | us-gaap_DisaggregationOfRevenueTableTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration