Expense Example, No Redemption (dei_DocumentInformationDocumentAxis, (Oppenheimer Equity Income Fund, Inc.), USD $)	0 Months Ended
	Feb. 28, 2013
Class A
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	$ 677
Expense Example, No Redemption, 3 Years	894
Expense Example, No Redemption, 5 Years	1,129
Expense Example, No Redemption, 10 Years	1,801
Class B
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	207
Expense Example, No Redemption, 3 Years	640
Expense Example, No Redemption, 5 Years	1,099
Expense Example, No Redemption, 10 Years	1,888
Class C
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	190
Expense Example, No Redemption, 3 Years	587
Expense Example, No Redemption, 5 Years	1,010
Expense Example, No Redemption, 10 Years	2,189
Class I
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	65
Expense Example, No Redemption, 3 Years	202
Expense Example, No Redemption, 5 Years	352
Expense Example, No Redemption, 10 Years	789
Class N
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	152
Expense Example, No Redemption, 3 Years	471
Expense Example, No Redemption, 5 Years	814
Expense Example, No Redemption, 10 Years	1,781
Class Y
Expense Example, No Redemption:
Expense Example, No Redemption, 1 Year	78
Expense Example, No Redemption, 3 Years	244
Expense Example, No Redemption, 5 Years	424
Expense Example, No Redemption, 10 Years	$ 946