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Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2014

Fair Value Disclosures [Abstract]

Fair Value, by Balance Sheet Grouping [Table Text Block]

The following table summarizes the fair value and carrying amount of the Company's financial instruments at December 31, 2014 and December 31, 2013.

	2014						2013
December 31 (In millions)	Carrying Amount			Fair Value			Carrying Amount			Fair Value
Long-Term Debt
OG&E Senior Notes	$	2,509.7		$	2,957.7		$	2,154.5		$	2,405.0
OG&E Industrial Authority Bonds	135.4			135.4			135.4			135.4
OG&E Tinker Debt	10.2			10.3			10.3			9.1
OGE Energy Senior Notes	100.0			99.9			99.9			103.1

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- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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