Annual Fund Operating Expenses (dei_DocumentInformationDocumentAxis, (Oppenheimer Value Fund))	0 Months Ended
	Feb. 28, 2012
Class A
Operating Expenses:
Management Fees	0.47%
Distribution and/or Service (12b-1) Fees	0.25%
Other Expenses	0.30%
Total Annual Fund Operating Expenses	1.02%
Fee Waiver and Expense Reimbursement	none	[1]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	1.02%
Class B
Operating Expenses:
Management Fees	0.47%
Distribution and/or Service (12b-1) Fees	1.00%
Other Expenses	0.66%
Total Annual Fund Operating Expenses	2.13%
Fee Waiver and Expense Reimbursement	(0.23%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	1.90%
Class C
Operating Expenses:
Management Fees	0.47%
Distribution and/or Service (12b-1) Fees	1.00%
Other Expenses	0.29%
Total Annual Fund Operating Expenses	1.76%
Fee Waiver and Expense Reimbursement	none	[1]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	1.76%
Class I
Operating Expenses:
Management Fees	0.47%	[2]
Distribution and/or Service (12b-1) Fees	none	[2]
Other Expenses	0.04%	[2]
Total Annual Fund Operating Expenses	0.51%	[2]
Fee Waiver and Expense Reimbursement	none	[1],[2]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	0.51%	[2]
Class N
Operating Expenses:
Management Fees	0.47%
Distribution and/or Service (12b-1) Fees	0.49%
Other Expenses	0.34%
Total Annual Fund Operating Expenses	1.30%
Fee Waiver and Expense Reimbursement	none	[1]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	1.30%
Class Y
Operating Expenses:
Management Fees	0.47%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.11%
Total Annual Fund Operating Expenses	0.58%
Fee Waiver and Expense Reimbursement	none	[1]
Total Annual Fund Operating Expenses After Fee Waiver and Expense Reimbursement	0.58%

[1] The Fund's transfer agent has voluntarily agreed to limit its fees for Classes B, C, N and Y to 0.35% of average annual net assets per class per fiscal year, and to 0.30% of average annual net assets per fiscal year for Class A. These limitations may not be amended or withdrawn until one year after the date of this prospectus.

[2] Estimated expenses for the first full fiscal year that Class I shares are offered. Class I shares will first be offered on the date of this prospectus.