Common Equity Dividend Restrictions (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
OGE Energy [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Ratio of Consolidated Debt to Consolidated Capitalization	65.00%
Retained Earnings, Restricted	$ 460
Retained Earnings, Unrestricted	1,532
OG&E [Member]
Schedule of Capitalization, Long-term Debt [Line Items]
Ratio of Consolidated Debt to Consolidated Capitalization	65.00%
Retained Earnings, Restricted	224
Retained Earnings, Unrestricted	$ 1,589