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Revenue from Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2018

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" in "Item 2. Management's Discussion and Analysis of Financial Condition and Results of Operations."

	June 30, 2018
(In millions)	Three Months Ended			Six Months Ended
Residential	$	217.3		$	413.5
Commercial	152.4			270.2
Industrial	47.7			89.4
Oilfield	37.7			71.5
Public authorities and street light	51.1			92.8
System sales revenues	506.2			937.4
Provision for rate refund	(16.5		)	(19.7		)
Integrated market	13.1			21.8
Transmission	40.2			76.0
Other	4.7			10.1
Revenues from contracts with customers	$	547.7		$	1,025.6

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- 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.

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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

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