485BPOS

Registration No. 2-76547

File No. 811-03420

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, DC 20549

FORM N-1A

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933	x
Pre-Effective Amendment No.	o
Post-Effective Amendment No. 56	x
and/or
REGISTRATION STATEMENT UNDER THE INVESTMENT COMPANY ACT OF 1940	x
Amendment No. 57	x

Oppenheimer Integrity Funds

(Exact Name of Registrant as Specified in Charter)

6803 South Tucson Way, Centennial, Colorado 80112-3924

(Address of Principal Executive Offices) (Zip Code)

(303) 768-3200

Registrant’s Telephone Number, including Area Code:

Arthur S. Gabinet, Esq.

OppenheimerFunds, Inc.

Two World Financial Center, 225 Liberty Street, New York, New York 10281-1008

(Name and Address of Agent for Service)

It is proposed that this filing will become effective (check appropriate box):

x immediately upon filing pursuant to paragraph (b)

o on _____________ pursuant to paragraph (b)

o 60 days after filing pursuant to paragraph (a)(1)

o on ______________ pursuant to paragraph (a)(1)

o 75 days after filing pursuant to paragraph (a)(2)

o on _______________ pursuant to paragraph (a)(2) of Rule 485.

If appropriate, check the following box:

o this post-effective amendment designates a new effective date for a previously filed post-effective amendment.

SIGNATURES

Pursuant to the requirements of the Securities Act of 1933 and the Investment Company Act of 1940, the Registrant certifies that it meets all the requirements for effectiveness of this Registration Statement pursuant to Rule 485(b) under the Securities Act of 1933 and has duly caused this Registration Statement to be signed on its behalf by the undersigned, thereunto duly authorized, in the City of New York and State of New York on the 16^h day of May, 2012.

Oppenheimer Integrity Funds, on behalf of Oppenheimer Core Bond Fund
By:	William F. Glavin, Jr.*
	William F. Glavin, Jr., President Principal Executive Officer and Trustee

Pursuant to the requirements of the Securities Act of 1933, this Registration Statement has been signed below by the following persons in the capacities on the dates indicated:

Signatures	Title	Date
William L. Armstrong*	Chairman of the	May 16, 2012
William L. Armstrong	Board of Trustees
William F. Glavin, Jr.*	President, Principal	May 16, 2012
William F. Glavin, Jr.	Executive Officer and Trustee
Brian W. Wixted*	Treasurer, Principal	May 16, 2012
Brian W. Wixted	Financial & Accounting Officer
Edward L. Cameron*	Trustee	May 16, 2012
Edward L. Cameron
Jon S. Fossel*	Trustee	May 16, 2012
Jon S. Fossel
Sam Freedman*	Trustee	May 16, 2012
Sam Freedman
Richard F. Grabish*	Trustee	May 16, 2012
Richard F. Grabish
Victoria J. Herget*	Trustee	May 16, 2012
Victoria J. Herget
Beverly L. Hamilton*	Trustee	May 16, 2012
Beverly L. Hamilton
Robert J. Malone*	Trustee	May 16, 2012
Robert J. Malone
F. William Marshall, Jr.*	Trustee	May 16, 2012
F. William Marshall, Jr.
Karen L. Stuckey*	Trustee	May 16, 2012
Karen L. Stuckey
James D. Vaughn*	Trustee	May 16, 2012
James D. Vaughn

*By:	/s/ Mitchell J. Lindauer
	Mitchell J. Lindauer, Attorney-in-Fact

EXHIBIT INDEX

Exhibit No.	Description
Ex-101.INS	XBRL Instance Document
Ex-101.SCH	XBRL Taxonomy Extension Schema Document
Ex-101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
Ex-101.DEF	XBRL Taxonomy Extension Definition Linkbase
Ex-101.LAB	XBRL Taxonomy Extension Labels Linkbase
Ex-101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

XML

(Oppenheimer Core Bond Fund)

Investment Objective. The Fund seeks total return by investing mainly in debt instruments.

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $50,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 14 of the prospectus and in the sections "How to Buy Shares" beginning on page 54 and "Appendix A" in the Fund's Statement of Additional Information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees (Oppenheimer Core Bond Fund)	Class A	Class B	Class C	Class N	Class Y	Class I
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	4.75%	none	none	none	none	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	none	5.00%	1.00%	1.00%	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses (Oppenheimer Core Bond Fund)		Class A	Class B	Class C	Class N	Class Y	Class I
Management Fees		0.48%	0.48%	0.48%	0.48%	0.48%	0.48%	[1]
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	0.50%	none	none	[1]
Other Expenses		0.33%	0.74%	0.34%	0.38%	0.04%	0.06%	[1]
Acquired Fund Fee and Expenses		0.02%	0.02%	0.02%	0.02%	0.02%	0.02%	[1]
Total Annual Fund Operating Expenses		1.08%	2.24%	1.84%	1.38%	0.54%	0.56%	[1]
Fee Waiver and/or Expense Reimbursement	[2]	(0.15%)	(0.56%)	(0.16%)	(0.20%)	(0.02%)	(0.02%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement		0.93%	1.68%	1.68%	1.18%	0.52%	0.54%	[1]

Example. The following Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in a class of shares of the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows:

If shares are redeemed

Expense Example (Oppenheimer Core Bond Fund) (USD $)		1 Year	3 Years	5 Years	10 Years
Class A		566	790	1,031	1,723
Class B		672	953	1,361	1,981
Class C		272	568	989	2,165
Class N		221	420	741	1,651
Class Y		53	172	301	677
Class I	[1]	55	178	312	701

If shares are not redeemed

Expense Example, No Redemption (Oppenheimer Core Bond Fund) (USD $)		1 Year	3 Years	5 Years	10 Years
Class A		566	790	1,031	1,723
Class B		172	653	1,161	1,981
Class C		172	568	989	2,165
Class N		121	420	741	1,651
Class Y		53	172	301	677
Class I	[1]	55	178	312	701

Portfolio Turnover. The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 94% of the average value of its portfolio.

Principal Investment Strategies. Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in investment-grade debt securities (generally referred to as "bonds"). A debt security is a security representing money borrowed by the issuer that must be repaid. The terms of a debt security specify the amount of principal, the interest rate or discount, and the time or times at which payments are due. Debt securities can include:

• Domestic and foreign corporate debt obligations;

• Domestic and foreign government debt obligations, including U.S. Government securities;

• Mortgage-related securities;

• Asset-backed securities; and

• Other debt obligations.

The portfolio managers' overall strategy is to build a diversified portfolio of corporate and government bonds. The Fund's investments in U.S. Government securities may include securities issued or guaranteed by the U.S. Government or its agencies or federally-chartered entities referred to as "instrumentalities." There is no required allocation of the Fund's assets among the above classes of securities, but the Fund focuses mainly on U.S. Government securities and investment-grade corporate debt securities. When market conditions change, the portfolio managers might change the Fund's relative asset allocation.

The Fund can invest up to 20% of its total assets in lower-grade, high-yield debt securities that are below investment-grade (commonly referred to as "junk bonds"). "Investment-grade" debt securities are rated in one of the top four rating categories by nationally recognized statistical rating organizations such as Moody's or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Fund's investment adviser, OppenheimerFunds, Inc., may internally assign ratings to certain of those securities, after assessing their credit quality, in investment-grade or below-investment-grade categories similar to those of nationally recognized statistical rating organizations. There can be no assurance, nor is it intended, that the Manager's credit analysis is consistent or comparable with the credit analysis process used by a nationally recognized statistical rating organization.

The Fund has no limitations on the range of maturities of the debt securities in which it can invest and may hold securities with short-, medium- or long-term maturities. The maturity of a security differs from its effective duration, which attempts to measure the expected volatility of a security's price to interest rate changes. For example, if a bond has an effective duration of three years, a 1% increase in general interest rates would be expected to cause the bond's value to decrease about 3%. To try to decrease volatility, the Fund seeks to maintain a weighted average effective portfolio duration of three to six years, measured on a dollar-weighted basis using the effective duration of the securities included in the portfolio and the amount invested in each of those securities. However, the duration of the portfolio might not meet that target due to market events or interest rate changes that cause debt securities to be repaid more rapidly or more slowly than expected.

The Fund may invest a portion of its assets in foreign debt securities, including securities issued by foreign governments or companies in both developed and emerging markets. The Fund may not invest more than 20% of its net assets in foreign debt securities.

The Fund may also use derivatives to seek increased returns or to try to manage investment risks. Futures, swaps and "structured" notes are examples of some of the types of derivatives the Fund can use.

In selecting investments for the Fund, the portfolio managers analyze the overall investment opportunities and risks in different sectors of the debt securities markets by focusing on business cycle analysis and relative values between the corporate and government sectors. The Fund mainly seeks income earnings on the Fund's investments plus capital appreciation that may arise from decreases in interest rates, from improving credit fundamentals for a particular sector or security or from other investment techniques.

The Fund may sell securities that the portfolio managers believe no longer meet the above criteria.

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Main Risks of Debt Securities. Debt securities may be subject to credit risk, interest rate risk, prepayment risk and extension risk. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. When interest rates fall, debt securities may be repaid more quickly than expected and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as "prepayment risk." When interest rates rise, debt securities may be repaid more slowly than expected and the value of the Fund's holdings may fall sharply. This is referred to as "extension risk." Interest rate changes normally have different effects on variable or floating rate securities than they do on securities with fixed interest rates.

Special Risks of Lower-Grade Securities. Lower-grade securities, whether rated or unrated, may be subject to wider market fluctuation, greater credit risk and greater risk of loss of income and principal than investment-grade securities. The market for lower-grade securities may be less liquid and therefore they may be harder to sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest up to 20% of its total assets in lower-grade securities, the Fund's credit risks are greater than those of funds that buy only investment-grade securities.

Fixed-Income Market Risks . Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns can cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns could cause reduced liquidity in certain debt securities markets. A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. These risks may be greater for investments in developing or emerging market countries.

Special Risks of Developing and Emerging Markets. The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies and restrictions on withdrawing assets from the country. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Risks of Derivative Investments. Derivatives may be volatile and may involve significant risks. The underlying security or other instrument on which a derivative is based, or the derivative itself, may not perform as expected. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. The Fund may also lose money on a derivative investment if the issuer fails to pay the amount due. Certain derivative investments held by the Fund may be illiquid, making it difficult to close out an unfavorable position. Derivative transactions may require the payment of premiums and can increase portfolio turnover. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful.

Who Is the Fund Designed For? The Fund is designed primarily for investors seeking total return from a fund that invests mainly in investment-grade debt securities but which can also hold high-yield, below investment-grade securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in corporate debt securities and the changes in debt securities prices that can occur when interest rates change. The Fund is intended to be a long-term investment, not a short term trading vehicle. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website: www.oppenheimerfunds.com/fund/investors/overview/CoreBondFund

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 8.88% (3 Qtr 09) and the lowest return was -26.30% (4 Qtr 08).

Average Annual Total Returns for the periods ended December 31, 2011

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.

Performance information for Class I shares is not provided because those shares were not available prior to the date of this prospectus.

Average Annual Total Returns (Oppenheimer Core Bond Fund)	Inception Date	1 Year	5 Years	10 Years
Class A	Apr. 15, 1988	2.34%	(3.96%)	0.69%
Class A Return After Taxes on Distributions		0.71%	(5.83%)	(1.08%)
Class A Return After Taxes on Distributions and Sale of Fund Shares		1.49%	(4.36%)	(0.41%)
Class B	May 03, 1993	1.65%	(4.05%)	0.74%
Class C	Jul. 11, 1995	5.64%	(3.77%)	0.43%
Class N	Mar. 01, 2001	6.18%	(3.30%)	0.91%
Class Y	Apr. 27, 1998	7.87%	(2.68%)	1.56%
Barclay's Capital Credit Index		8.35%	6.80%	6.35%
Barclay's Capital U.S. Aggregate Bond Index		7.84%	6.50%	5.78%
Citigroup Broad Investment Grade Bond Index		7.85%	6.69%	5.89%

[1] 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.

[2] The Manager has voluntarily agreed to waive fees and/or reimburse Fund expenses in an amount equal to the indirect management fees incurred through the Fund's investment in underlying funds managed by the Manager or its affiliates. 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 net assets per fiscal year for Class A. The Manager has also voluntarily agreed to waive fees and/or reimburse the Fund for certain expenses in order to limit "Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement" (excluding any applicable dividend expense, taxes, interest and fees from borrowing, any subsidiary expenses, Acquired Fund Fees and Expenses, brokerage commissions, extraordinary expenses and certain other Fund expenses) to annual rates of 0.90% for Class A shares, 1.65% for Class B shares, 1.65% for Class C shares, 1.15% for Class N shares, and 0.65% for Class Y shares as calculated on the daily net assets of the Fund. Each of these fee waivers and/or expense limitations may not be amended or withdrawn until one year from the date of this prospectus.

[1] Based on estimated expenses for Class I shares for the first fiscal year.

[1] Based on estimated expenses for Class I shares for the first fiscal year.

XML

Shareholder Fees (dei_DocumentInformationDocumentAxis, (Oppenheimer Core Bond Fund))	0 Months Ended
	Apr. 27, 2012
Class A
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	4.75%
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	none
Class B
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	5.00%
Class C
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	1.00%
Class I
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	none
Class N
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	1.00%
Class Y
Shareholder Fees:
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	none

XML

(Oppenheimer Core Bond Fund)

Investment Objective. The Fund seeks total return by investing mainly in debt instruments.

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $50,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 14 of the prospectus and in the sections "How to Buy Shares" beginning on page 54 and "Appendix A" in the Fund's Statement of Additional Information.

Shareholder Fees (fees paid directly from your investment)

Shareholder Fees (Oppenheimer Core Bond Fund)	Class A	Class B	Class C	Class N	Class Y	Class I
Maximum Sales Charge (Load) imposed on purchases (as % of offering price)	4.75%	none	none	none	none	none
Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)	none	5.00%	1.00%	1.00%	none	none

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses (Oppenheimer Core Bond Fund)		Class A	Class B	Class C	Class N	Class Y	Class I
Management Fees		0.48%	0.48%	0.48%	0.48%	0.48%	0.48%	[1]
Distribution and/or Service (12b-1) Fees		0.25%	1.00%	1.00%	0.50%	none	none	[1]
Other Expenses		0.33%	0.74%	0.34%	0.38%	0.04%	0.06%	[1]
Acquired Fund Fee and Expenses		0.02%	0.02%	0.02%	0.02%	0.02%	0.02%	[1]
Total Annual Fund Operating Expenses		1.08%	2.24%	1.84%	1.38%	0.54%	0.56%	[1]
Fee Waiver and/or Expense Reimbursement	[2]	(0.15%)	(0.56%)	(0.16%)	(0.20%)	(0.02%)	(0.02%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement		0.93%	1.68%	1.68%	1.18%	0.52%	0.54%	[1]

Example. The following Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in a class of shares of the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows:

If shares are redeemed

Expense Example (Oppenheimer Core Bond Fund) (USD $)		1 Year	3 Years	5 Years	10 Years
Class A		566	790	1,031	1,723
Class B		672	953	1,361	1,981
Class C		272	568	989	2,165
Class N		221	420	741	1,651
Class Y		53	172	301	677
Class I	[1]	55	178	312	701

If shares are not redeemed

Expense Example, No Redemption (Oppenheimer Core Bond Fund) (USD $)		1 Year	3 Years	5 Years	10 Years
Class A		566	790	1,031	1,723
Class B		172	653	1,161	1,981
Class C		172	568	989	2,165
Class N		121	420	741	1,651
Class Y		53	172	301	677
Class I	[1]	55	178	312	701

Portfolio Turnover. The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 94% of the average value of its portfolio.

Principal Investment Strategies. Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in investment-grade debt securities (generally referred to as "bonds"). A debt security is a security representing money borrowed by the issuer that must be repaid. The terms of a debt security specify the amount of principal, the interest rate or discount, and the time or times at which payments are due. Debt securities can include:

• Domestic and foreign corporate debt obligations;

• Domestic and foreign government debt obligations, including U.S. Government securities;

• Mortgage-related securities;

• Asset-backed securities; and

• Other debt obligations.

The portfolio managers' overall strategy is to build a diversified portfolio of corporate and government bonds. The Fund's investments in U.S. Government securities may include securities issued or guaranteed by the U.S. Government or its agencies or federally-chartered entities referred to as "instrumentalities." There is no required allocation of the Fund's assets among the above classes of securities, but the Fund focuses mainly on U.S. Government securities and investment-grade corporate debt securities. When market conditions change, the portfolio managers might change the Fund's relative asset allocation.

The Fund can invest up to 20% of its total assets in lower-grade, high-yield debt securities that are below investment-grade (commonly referred to as "junk bonds"). "Investment-grade" debt securities are rated in one of the top four rating categories by nationally recognized statistical rating organizations such as Moody's or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Fund's investment adviser, OppenheimerFunds, Inc., may internally assign ratings to certain of those securities, after assessing their credit quality, in investment-grade or below-investment-grade categories similar to those of nationally recognized statistical rating organizations. There can be no assurance, nor is it intended, that the Manager's credit analysis is consistent or comparable with the credit analysis process used by a nationally recognized statistical rating organization.

The Fund has no limitations on the range of maturities of the debt securities in which it can invest and may hold securities with short-, medium- or long-term maturities. The maturity of a security differs from its effective duration, which attempts to measure the expected volatility of a security's price to interest rate changes. For example, if a bond has an effective duration of three years, a 1% increase in general interest rates would be expected to cause the bond's value to decrease about 3%. To try to decrease volatility, the Fund seeks to maintain a weighted average effective portfolio duration of three to six years, measured on a dollar-weighted basis using the effective duration of the securities included in the portfolio and the amount invested in each of those securities. However, the duration of the portfolio might not meet that target due to market events or interest rate changes that cause debt securities to be repaid more rapidly or more slowly than expected.

The Fund may invest a portion of its assets in foreign debt securities, including securities issued by foreign governments or companies in both developed and emerging markets. The Fund may not invest more than 20% of its net assets in foreign debt securities.

The Fund may also use derivatives to seek increased returns or to try to manage investment risks. Futures, swaps and "structured" notes are examples of some of the types of derivatives the Fund can use.

In selecting investments for the Fund, the portfolio managers analyze the overall investment opportunities and risks in different sectors of the debt securities markets by focusing on business cycle analysis and relative values between the corporate and government sectors. The Fund mainly seeks income earnings on the Fund's investments plus capital appreciation that may arise from decreases in interest rates, from improving credit fundamentals for a particular sector or security or from other investment techniques.

The Fund may sell securities that the portfolio managers believe no longer meet the above criteria.

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Main Risks of Debt Securities. Debt securities may be subject to credit risk, interest rate risk, prepayment risk and extension risk. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. When interest rates fall, debt securities may be repaid more quickly than expected and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as "prepayment risk." When interest rates rise, debt securities may be repaid more slowly than expected and the value of the Fund's holdings may fall sharply. This is referred to as "extension risk." Interest rate changes normally have different effects on variable or floating rate securities than they do on securities with fixed interest rates.

Special Risks of Lower-Grade Securities. Lower-grade securities, whether rated or unrated, may be subject to wider market fluctuation, greater credit risk and greater risk of loss of income and principal than investment-grade securities. The market for lower-grade securities may be less liquid and therefore they may be harder to sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest up to 20% of its total assets in lower-grade securities, the Fund's credit risks are greater than those of funds that buy only investment-grade securities.

Fixed-Income Market Risks . Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns can cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns could cause reduced liquidity in certain debt securities markets. A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. These risks may be greater for investments in developing or emerging market countries.

Special Risks of Developing and Emerging Markets. The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies and restrictions on withdrawing assets from the country. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Risks of Derivative Investments. Derivatives may be volatile and may involve significant risks. The underlying security or other instrument on which a derivative is based, or the derivative itself, may not perform as expected. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. The Fund may also lose money on a derivative investment if the issuer fails to pay the amount due. Certain derivative investments held by the Fund may be illiquid, making it difficult to close out an unfavorable position. Derivative transactions may require the payment of premiums and can increase portfolio turnover. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful.

Who Is the Fund Designed For? The Fund is designed primarily for investors seeking total return from a fund that invests mainly in investment-grade debt securities but which can also hold high-yield, below investment-grade securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in corporate debt securities and the changes in debt securities prices that can occur when interest rates change. The Fund is intended to be a long-term investment, not a short term trading vehicle. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website: www.oppenheimerfunds.com/fund/investors/overview/CoreBondFund

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 8.88% (3 Qtr 09) and the lowest return was -26.30% (4 Qtr 08).

Average Annual Total Returns for the periods ended December 31, 2011

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.

Performance information for Class I shares is not provided because those shares were not available prior to the date of this prospectus.

Average Annual Total Returns (Oppenheimer Core Bond Fund)	Inception Date	1 Year	5 Years	10 Years
Class A	Apr. 15, 1988	2.34%	(3.96%)	0.69%
Class A Return After Taxes on Distributions		0.71%	(5.83%)	(1.08%)
Class A Return After Taxes on Distributions and Sale of Fund Shares		1.49%	(4.36%)	(0.41%)
Class B	May 03, 1993	1.65%	(4.05%)	0.74%
Class C	Jul. 11, 1995	5.64%	(3.77%)	0.43%
Class N	Mar. 01, 2001	6.18%	(3.30%)	0.91%
Class Y	Apr. 27, 1998	7.87%	(2.68%)	1.56%
Barclay's Capital Credit Index		8.35%	6.80%	6.35%
Barclay's Capital U.S. Aggregate Bond Index		7.84%	6.50%	5.78%
Citigroup Broad Investment Grade Bond Index		7.85%	6.69%	5.89%

[1] 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.

[2] The Manager has voluntarily agreed to waive fees and/or reimburse Fund expenses in an amount equal to the indirect management fees incurred through the Fund's investment in underlying funds managed by the Manager or its affiliates. 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 net assets per fiscal year for Class A. The Manager has also voluntarily agreed to waive fees and/or reimburse the Fund for certain expenses in order to limit "Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement" (excluding any applicable dividend expense, taxes, interest and fees from borrowing, any subsidiary expenses, Acquired Fund Fees and Expenses, brokerage commissions, extraordinary expenses and certain other Fund expenses) to annual rates of 0.90% for Class A shares, 1.65% for Class B shares, 1.65% for Class C shares, 1.15% for Class N shares, and 0.65% for Class Y shares as calculated on the daily net assets of the Fund. Each of these fee waivers and/or expense limitations may not be amended or withdrawn until one year from the date of this prospectus.

[1] Based on estimated expenses for Class I shares for the first fiscal year.

[1] Based on estimated expenses for Class I shares for the first fiscal year.

XML

Average Annual Total Returns (dei_DocumentInformationDocumentAxis, (Oppenheimer Core Bond Fund))	0 Months Ended
	Apr. 27, 2012
Barclay's Capital Credit Index
Average Annual Return:
1 Year	8.35%
5 Years	6.80%
10 Years	6.35%
Barclay's Capital U.S. Aggregate Bond Index
Average Annual Return:
1 Year	7.84%
5 Years	6.50%
10 Years	5.78%
Citigroup Broad Investment Grade Bond Index
Average Annual Return:
1 Year	7.85%
5 Years	6.69%
10 Years	5.89%
Class A
Average Annual Return:
1 Year	2.34%
5 Years	(3.96%)
10 Years	0.69%
Inception Date	Apr. 15, 1988
Class A | Return After Taxes on Distributions
Average Annual Return:
1 Year	0.71%
5 Years	(5.83%)
10 Years	(1.08%)
Class A | Return After Taxes on Distributions and Sale of Fund Shares
Average Annual Return:
1 Year	1.49%
5 Years	(4.36%)
10 Years	(0.41%)
Class B
Average Annual Return:
1 Year	1.65%
5 Years	(4.05%)
10 Years	0.74%
Inception Date	May 03, 1993
Class C
Average Annual Return:
1 Year	5.64%
5 Years	(3.77%)
10 Years	0.43%
Inception Date	Jul. 11, 1995
Class N
Average Annual Return:
1 Year	6.18%
5 Years	(3.30%)
10 Years	0.91%
Inception Date	Mar. 01, 2001
Class Y
Average Annual Return:
1 Year	7.87%
5 Years	(2.68%)
10 Years	1.56%
Inception Date	Apr. 27, 1998

XML

Label

Element

Value

Risk/Return:

rr_RiskReturnAbstract

Document Type

dei_DocumentType

485BPOS

Document Period End Date

dei_DocumentPeriodEndDate

Dec. 31, 2011

Registrant Name

dei_EntityRegistrantName

OPPENHEIMER INTEGRITY FUNDS

Central Index Key

dei_EntityCentralIndexKey

0000701265

Amendment Flag

dei_AmendmentFlag

false

Document Creation Date

dei_DocumentCreationDate

Apr. 26, 2012

Document Effective Date

dei_DocumentEffectiveDate

Apr. 27, 2012

Prospectus Date

rr_ProspectusDate

Apr. 27, 2012

(Oppenheimer Core Bond Fund)

Risk/Return:

rr_RiskReturnAbstract

Objective, Primary [Text Block]

rr_ObjectivePrimaryTextBlock

Investment Objective. The Fund seeks total return by investing mainly in debt instruments.

Expense Narrative [Text Block]

rr_ExpenseNarrativeTextBlock

Fees and Expenses of the Fund. This table describes the fees and expenses that you may pay if you buy and hold or redeem shares of the Fund. You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $50,000 in certain funds in the Oppenheimer family of funds. More information about these and other discounts is available from your financial professional and in the section "About Your Account" beginning on page 14 of the prospectus and in the sections "How to Buy Shares" beginning on page 54 and "Appendix A" in the Fund's Statement of Additional Information.

Shareholder Fees Caption [Text]

rr_ShareholderFeesCaption

Shareholder Fees (fees paid directly from your investment)

Operating Expenses Caption [Text]

rr_OperatingExpensesCaption

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Portfolio Turnover [Text Block]

rr_PortfolioTurnoverTextBlock

Portfolio Turnover. The Fund pays transaction costs, such as commissions, when it buys and sells securities (or "turns over" its portfolio). A higher portfolio turnover rate may indicate higher transaction costs and may result in higher taxes when Fund shares are held in a taxable account. These costs, which are not reflected in the annual fund operating expenses or in the Example, affect the Fund's performance. During the most recent fiscal year, the Fund's portfolio turnover rate was 94% of the average value of its portfolio.

Portfolio Turnover, Rate

rr_PortfolioTurnoverRate

94.00%

Expense Breakpoint Discounts [Text]

rr_ExpenseBreakpointDiscounts

You may qualify for sales charge discounts if you (or you and your spouse) invest, or agree to invest in the future, at least $50,000 in certain funds in the Oppenheimer family of funds.

Expense Breakpoint, Minimum Investment Required [Amount]

rr_ExpenseBreakpointMinimumInvestmentRequiredAmount

50,000

Expense Example Narrative [Text Block]

rr_ExpenseExampleNarrativeTextBlock

Example. The following Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in a class of shares of the Fund for the time periods indicated. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. Although your actual costs may be higher or lower, based on these assumptions your expenses would be as follows:

Expense Example by, Year, Caption [Text]

rr_ExpenseExampleByYearCaption

If shares are redeemed

Expense Example, No Redemption, By Year, Caption [Text]

rr_ExpenseExampleNoRedemptionByYearCaption

If shares are not redeemed

Strategy Narrative [Text Block]

rr_StrategyNarrativeTextBlock

Principal Investment Strategies. Under normal market conditions, the Fund invests at least 80% of its net assets, plus borrowings for investment purposes, in investment-grade debt securities (generally referred to as "bonds"). A debt security is a security representing money borrowed by the issuer that must be repaid. The terms of a debt security specify the amount of principal, the interest rate or discount, and the time or times at which payments are due. Debt securities can include:

• Domestic and foreign corporate debt obligations;

• Domestic and foreign government debt obligations, including U.S. Government securities;

• Mortgage-related securities;

• Asset-backed securities; and

• Other debt obligations.

The portfolio managers' overall strategy is to build a diversified portfolio of corporate and government bonds. The Fund's investments in U.S. Government securities may include securities issued or guaranteed by the U.S. Government or its agencies or federally-chartered entities referred to as "instrumentalities." There is no required allocation of the Fund's assets among the above classes of securities, but the Fund focuses mainly on U.S. Government securities and investment-grade corporate debt securities. When market conditions change, the portfolio managers might change the Fund's relative asset allocation.

The Fund can invest up to 20% of its total assets in lower-grade, high-yield debt securities that are below investment-grade (commonly referred to as "junk bonds"). "Investment-grade" debt securities are rated in one of the top four rating categories by nationally recognized statistical rating organizations such as Moody's or Standard & Poor's. The Fund may also invest in unrated securities, in which case the Fund's investment adviser, OppenheimerFunds, Inc., may internally assign ratings to certain of those securities, after assessing their credit quality, in investment-grade or below-investment-grade categories similar to those of nationally recognized statistical rating organizations. There can be no assurance, nor is it intended, that the Manager's credit analysis is consistent or comparable with the credit analysis process used by a nationally recognized statistical rating organization.

The Fund has no limitations on the range of maturities of the debt securities in which it can invest and may hold securities with short-, medium- or long-term maturities. The maturity of a security differs from its effective duration, which attempts to measure the expected volatility of a security's price to interest rate changes. For example, if a bond has an effective duration of three years, a 1% increase in general interest rates would be expected to cause the bond's value to decrease about 3%. To try to decrease volatility, the Fund seeks to maintain a weighted average effective portfolio duration of three to six years, measured on a dollar-weighted basis using the effective duration of the securities included in the portfolio and the amount invested in each of those securities. However, the duration of the portfolio might not meet that target due to market events or interest rate changes that cause debt securities to be repaid more rapidly or more slowly than expected.

The Fund may invest a portion of its assets in foreign debt securities, including securities issued by foreign governments or companies in both developed and emerging markets. The Fund may not invest more than 20% of its net assets in foreign debt securities.

The Fund may also use derivatives to seek increased returns or to try to manage investment risks. Futures, swaps and "structured" notes are examples of some of the types of derivatives the Fund can use.

In selecting investments for the Fund, the portfolio managers analyze the overall investment opportunities and risks in different sectors of the debt securities markets by focusing on business cycle analysis and relative values between the corporate and government sectors. The Fund mainly seeks income earnings on the Fund's investments plus capital appreciation that may arise from decreases in interest rates, from improving credit fundamentals for a particular sector or security or from other investment techniques.

The Fund may sell securities that the portfolio managers believe no longer meet the above criteria.

Risk Narrative [Text Block]

rr_RiskNarrativeTextBlock

Principal Risks. The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Main Risks of Debt Securities. Debt securities may be subject to credit risk, interest rate risk, prepayment risk and extension risk. Credit risk is the risk that the issuer of a security might not make interest and principal payments on the security as they become due. If an issuer fails to pay interest or repay principal, the Fund's income or share value might be reduced. Adverse news about an issuer or a downgrade in an issuer's credit rating, for any reason, can also reduce the market value of the issuer's securities. Interest rate risk is the risk that when prevailing interest rates fall, the values of already-issued debt securities generally rise; and when prevailing interest rates rise, the values of already-issued debt securities generally fall, and they may be worth less than the amount the Fund paid for them. When interest rates change, the values of longer-term debt securities usually change more than the values of shorter-term debt securities. When interest rates fall, debt securities may be repaid more quickly than expected and the Fund may be required to reinvest the proceeds at a lower interest rate. This is referred to as "prepayment risk." When interest rates rise, debt securities may be repaid more slowly than expected and the value of the Fund's holdings may fall sharply. This is referred to as "extension risk." Interest rate changes normally have different effects on variable or floating rate securities than they do on securities with fixed interest rates.

Special Risks of Lower-Grade Securities. Lower-grade securities, whether rated or unrated, may be subject to wider market fluctuation, greater credit risk and greater risk of loss of income and principal than investment-grade securities. The market for lower-grade securities may be less liquid and therefore they may be harder to sell at an acceptable price, especially during times of market volatility or decline.

Because the Fund can invest up to 20% of its total assets in lower-grade securities, the Fund's credit risks are greater than those of funds that buy only investment-grade securities.

Fixed-Income Market Risks . Economic and other market developments can adversely affect fixed-income securities markets in the United States, Europe and elsewhere. At times, participants in debt securities markets may develop concerns about the ability of certain issuers of debt securities to make timely principal and interest payments, or they may develop concerns about the ability of financial institutions that make markets in certain debt securities to facilitate an orderly market. Those concerns can cause increased volatility in those debt securities or debt securities markets. Under some circumstances, as was the case during the latter half of 2008 and early 2009, those concerns could cause reduced liquidity in certain debt securities markets. A lack of liquidity or other adverse credit market conditions may hamper the Fund's ability to sell the debt securities in which it invests or to find and purchase suitable debt instruments.

Main Risks of Foreign Investing. Foreign securities are subject to special risks. Foreign issuers are usually not subject to the same accounting and disclosure requirements that U.S. companies are subject to, which may make it difficult for the Fund to evaluate a foreign company's operations or financial condition. A change in the value of a foreign currency against the U.S. dollar will result in a change in the U.S. dollar value of securities denominated in that foreign currency and in the value of any income or distributions the Fund may receive on those securities. The value of foreign investments may be affected by exchange control regulations, foreign taxes, higher transaction and other costs, delays in the settlement of transactions, changes in economic or monetary policy in the United States or abroad, expropriation or nationalization of a company's assets, or other political and economic factors. These risks may be greater for investments in developing or emerging market countries.

Special Risks of Developing and Emerging Markets. The economies of developing or emerging market countries may be more dependent on relatively few industries that may be highly vulnerable to local and global changes. The governments of developing and emerging market countries may also be more unstable than the governments of more developed countries. These countries generally have less developed securities markets or exchanges, and less developed legal and accounting systems. Securities may be more difficult to sell at an acceptable price and may be more volatile than securities in countries with more mature markets. The value of developing or emerging market currencies may fluctuate more than the currencies of countries with more mature markets. Investments in developing or emerging market countries may be subject to greater risks of government restrictions, including confiscatory taxation, expropriation or nationalization of a company's assets, restrictions on foreign ownership of local companies and restrictions on withdrawing assets from the country. Investments in securities of issuers in developing or emerging market countries may be considered speculative.

Risks of Derivative Investments. Derivatives may be volatile and may involve significant risks. The underlying security or other instrument on which a derivative is based, or the derivative itself, may not perform as expected. Some derivatives have the potential for unlimited loss, regardless of the size of the Fund's initial investment. The Fund may also lose money on a derivative investment if the issuer fails to pay the amount due. Certain derivative investments held by the Fund may be illiquid, making it difficult to close out an unfavorable position. Derivative transactions may require the payment of premiums and can increase portfolio turnover. As a result of these risks, the Fund could realize little or no income or lose money from its investment, or a hedge might be unsuccessful.

Who Is the Fund Designed For? The Fund is designed primarily for investors seeking total return from a fund that invests mainly in investment-grade debt securities but which can also hold high-yield, below investment-grade securities. Those investors should be willing to assume the credit risks of a fund that typically invests a significant amount of its assets in corporate debt securities and the changes in debt securities prices that can occur when interest rates change. The Fund is intended to be a long-term investment, not a short term trading vehicle. The Fund is not a complete investment program. You should carefully consider your own investment goals and risk tolerance before investing in the Fund.

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Risk Lose Money [Text]

rr_RiskLoseMoney

The price of the Fund's shares can go up and down substantially. The value of the Fund's investments may change because of broad changes in the markets in which the Fund invests or because of poor investment selection, which could cause the Fund to underperform other funds with similar investment objectives. There is no assurance that the Fund will achieve its investment objective. When you redeem your shares, they may be worth more or less than what you paid for them. These risks mean that you can lose money by investing in the Fund.

Risk Not Insured Depository Institution [Text]

rr_RiskNotInsuredDepositoryInstitution

An investment in the Fund is not a deposit of any bank and is not insured or guaranteed by the Federal Deposit Insurance Corporation or any other government agency.

Performance Narrative [Text Block]

rr_PerformanceNarrativeTextBlock

The Fund's Past Performance. The bar chart and table below provide some indication of the risks of investing in the Fund by showing changes in the Fund's performance from year to year and by showing how the Fund's average annual returns for 1, 5 and 10 years compare with those of a broad measure of market performance. The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future. More recent performance information is available by calling the toll-free number on the back of this prospectus and on the Fund's website: www.oppenheimerfunds.com/fund/investors/overview/CoreBondFund

Performance Availability Website Address [Text]

rr_PerformanceAvailabilityWebSiteAddress

www.oppenheimerfunds.com/fund/investors/overview/CoreBondFund

Performance Past Does Not Indicate Future [Text]

rr_PerformancePastDoesNotIndicateFuture

The Fund's past investment performance (before and after taxes) is not necessarily an indication of how the Fund will perform in the future.

Annual Return 2002

rr_AnnualReturn2002

10.06%

Annual Return 2003

rr_AnnualReturn2003

5.87%

Annual Return 2004

rr_AnnualReturn2004

4.90%

Annual Return 2005

rr_AnnualReturn2005

2.35%

Annual Return 2006

rr_AnnualReturn2006

4.84%

Annual Return 2007

rr_AnnualReturn2007

4.49%

Annual Return 2008

rr_AnnualReturn2008

(35.83%)

Annual Return 2009

rr_AnnualReturn2009

7.29%

Annual Return 2010

rr_AnnualReturn2010

10.96%

Annual Return 2011

rr_AnnualReturn2011

7.44%

Bar Chart Closing [Text Block]

rr_BarChartClosingTextBlock

Sales charges and taxes are not included and the returns would be lower if they were. During the period shown, the highest return for a calendar quarter was 8.88% (3 Qtr 09) and the lowest return was -26.30% (4 Qtr 08).

Highest Quarterly Return, Label

rr_HighestQuarterlyReturnLabel

highest return for a calendar quarter was 8.88% (3 Qtr 09)

Highest Quarterly Return

rr_BarChartHighestQuarterlyReturn

8.88%

Lowest Quarterly Return, Label

rr_LowestQuarterlyReturnLabel

lowest return was -26.30% (4 Qtr 08)

Lowest Quarterly Return

rr_BarChartLowestQuarterlyReturn

(26.30%)

Performance Table Heading

rr_PerformanceTableHeading

Average Annual Total Returns for the periods ended December 31, 2011

Performance Table Uses Highest Federal Rate

rr_PerformanceTableUsesHighestFederalRate

After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes.

Performance Table Not Relevant to Tax Deferred

rr_PerformanceTableNotRelevantToTaxDeferred

Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts.

Performance Table One Class of after Tax Shown [Text]

rr_PerformanceTableOneClassOfAfterTaxShown

After-tax returns are shown for only one class and after-tax returns for other classes will vary.

Performance Table Narrative

rr_PerformanceTableNarrativeTextBlock

The following table shows the average annual total returns for each class of the Fund's shares. After-tax returns are calculated using the highest individual federal marginal income tax rates and do not reflect the impact of state or local taxes. Your actual after-tax returns, depending on your individual tax situation, may differ from those shown and after-tax returns shown are not relevant to investors who hold their Fund shares through tax-deferred arrangements, such as 401(k) plans or individual retirement accounts. After-tax returns are shown for only one class and after-tax returns for other classes will vary.

Performance information for Class I shares is not provided because those shares were not available prior to the date of this prospectus.

(Oppenheimer Core Bond Fund) | Barclay's Capital Credit Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

8.35%

5 Years

rr_AverageAnnualReturnYear05

6.80%

10 Years

rr_AverageAnnualReturnYear10

6.35%

(Oppenheimer Core Bond Fund) | Barclay's Capital U.S. Aggregate Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.84%

5 Years

rr_AverageAnnualReturnYear05

6.50%

10 Years

rr_AverageAnnualReturnYear10

5.78%

(Oppenheimer Core Bond Fund) | Citigroup Broad Investment Grade Bond Index

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

7.85%

5 Years

rr_AverageAnnualReturnYear05

6.69%

10 Years

rr_AverageAnnualReturnYear10

5.89%

(Oppenheimer Core Bond Fund) | Class A

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

4.75%

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.25%

Other Expenses

rr_OtherExpensesOverAssets

0.33%

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.08%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.15%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.93%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

566

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

790

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,031

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,723

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

566

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

790

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,031

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,723

1 Year

rr_AverageAnnualReturnYear01

2.34%

5 Years

rr_AverageAnnualReturnYear05

(3.96%)

10 Years

rr_AverageAnnualReturnYear10

0.69%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 15, 1988

(Oppenheimer Core Bond Fund) | Class A | Return After Taxes on Distributions

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

0.71%

5 Years

rr_AverageAnnualReturnYear05

(5.83%)

10 Years

rr_AverageAnnualReturnYear10

(1.08%)

(Oppenheimer Core Bond Fund) | Class A | Return After Taxes on Distributions and Sale of Fund Shares

Risk/Return:

rr_RiskReturnAbstract

1 Year

rr_AverageAnnualReturnYear01

1.49%

5 Years

rr_AverageAnnualReturnYear05

(4.36%)

10 Years

rr_AverageAnnualReturnYear10

(0.41%)

(Oppenheimer Core Bond Fund) | Class B

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

5.00%

Management Fees

rr_ManagementFeesOverAssets

0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.74%

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

2.24%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.56%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.68%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

672

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

953

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

1,361

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,981

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

172

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

653

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

1,161

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,981

1 Year

rr_AverageAnnualReturnYear01

1.65%

5 Years

rr_AverageAnnualReturnYear05

(4.05%)

10 Years

rr_AverageAnnualReturnYear10

0.74%

Inception Date

rr_AverageAnnualReturnInceptionDate

May 03, 1993

(Oppenheimer Core Bond Fund) | Class C

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Management Fees

rr_ManagementFeesOverAssets

0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

1.00%

Other Expenses

rr_OtherExpensesOverAssets

0.34%

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.84%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.16%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.68%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

272

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

568

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

989

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

2,165

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

172

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

568

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

989

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

2,165

1 Year

rr_AverageAnnualReturnYear01

5.64%

5 Years

rr_AverageAnnualReturnYear05

(3.77%)

10 Years

rr_AverageAnnualReturnYear10

0.43%

Inception Date

rr_AverageAnnualReturnInceptionDate

Jul. 11, 1995

(Oppenheimer Core Bond Fund) | Class I

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.48%

^[1]

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

^[1]

Other Expenses

rr_OtherExpensesOverAssets

0.06%

^[1]

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

^[1]

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.56%

^[1]

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[1],[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.54%

^[1]

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

55

^[3]

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

178

^[3]

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

312

^[3]

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

701

^[3]

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

55

^[3]

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

178

^[3]

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

312

^[3]

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

701

^[3]

(Oppenheimer Core Bond Fund) | Class N

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

1.00%

Management Fees

rr_ManagementFeesOverAssets

0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

0.50%

Other Expenses

rr_OtherExpensesOverAssets

0.38%

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

1.38%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.20%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

1.18%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

221

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

420

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

741

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

1,651

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

121

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

420

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

741

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

1,651

1 Year

rr_AverageAnnualReturnYear01

6.18%

5 Years

rr_AverageAnnualReturnYear05

(3.30%)

10 Years

rr_AverageAnnualReturnYear10

0.91%

Inception Date

rr_AverageAnnualReturnInceptionDate

Mar. 01, 2001

(Oppenheimer Core Bond Fund) | Class Y

Risk/Return:

rr_RiskReturnAbstract

Maximum Sales Charge (Load) imposed on purchases (as % of offering price)

rr_MaximumSalesChargeImposedOnPurchasesOverOfferingPrice

none

Maximum Deferred Sales Charge (Load) (as % of the lower of original offering price or redemption proceeds)

rr_MaximumDeferredSalesChargeOverOfferingPrice

none

Management Fees

rr_ManagementFeesOverAssets

0.48%

Distribution and/or Service (12b-1) Fees

rr_DistributionAndService12b1FeesOverAssets

none

Other Expenses

rr_OtherExpensesOverAssets

0.04%

Acquired Fund Fee and Expenses

rr_AcquiredFundFeesAndExpensesOverAssets

0.02%

Total Annual Fund Operating Expenses

rr_ExpensesOverAssets

0.54%

Fee Waiver and/or Expense Reimbursement

rr_FeeWaiverOrReimbursementOverAssets

(0.02%)

^[2]

Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement

rr_NetExpensesOverAssets

0.52%

Expense Example, with Redemption, 1 Year

rr_ExpenseExampleYear01

53

Expense Example, with Redemption, 3 Years

rr_ExpenseExampleYear03

172

Expense Example, with Redemption, 5 Years

rr_ExpenseExampleYear05

301

Expense Example, with Redemption, 10 Years

rr_ExpenseExampleYear10

677

Expense Example, No Redemption, 1 Year

rr_ExpenseExampleNoRedemptionYear01

53

Expense Example, No Redemption, 3 Years

rr_ExpenseExampleNoRedemptionYear03

172

Expense Example, No Redemption, 5 Years

rr_ExpenseExampleNoRedemptionYear05

301

Expense Example, No Redemption, 10 Years

rr_ExpenseExampleNoRedemptionYear10

677

1 Year

rr_AverageAnnualReturnYear01

7.87%

5 Years

rr_AverageAnnualReturnYear05

(2.68%)

10 Years

rr_AverageAnnualReturnYear10

1.56%

Inception Date

rr_AverageAnnualReturnInceptionDate

Apr. 27, 1998

[1] 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.

[2] The Manager has voluntarily agreed to waive fees and/or reimburse Fund expenses in an amount equal to the indirect management fees incurred through the Fund's investment in underlying funds managed by the Manager or its affiliates. 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 net assets per fiscal year for Class A. The Manager has also voluntarily agreed to waive fees and/or reimburse the Fund for certain expenses in order to limit "Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement" (excluding any applicable dividend expense, taxes, interest and fees from borrowing, any subsidiary expenses, Acquired Fund Fees and Expenses, brokerage commissions, extraordinary expenses and certain other Fund expenses) to annual rates of 0.90% for Class A shares, 1.65% for Class B shares, 1.65% for Class C shares, 1.15% for Class N shares, and 0.65% for Class Y shares as calculated on the daily net assets of the Fund. Each of these fee waivers and/or expense limitations may not be amended or withdrawn until one year from the date of this prospectus.

[3] Based on estimated expenses for Class I shares for the first fiscal year.

XML

Annual Fund Operating Expenses (dei_DocumentInformationDocumentAxis, (Oppenheimer Core Bond Fund))	0 Months Ended
	Apr. 27, 2012
Class A
Operating Expenses:
Management Fees	0.48%
Distribution and/or Service (12b-1) Fees	0.25%
Other Expenses	0.33%
Acquired Fund Fee and Expenses	0.02%
Total Annual Fund Operating Expenses	1.08%
Fee Waiver and/or Expense Reimbursement	(0.15%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.93%
Class B
Operating Expenses:
Management Fees	0.48%
Distribution and/or Service (12b-1) Fees	1.00%
Other Expenses	0.74%
Acquired Fund Fee and Expenses	0.02%
Total Annual Fund Operating Expenses	2.24%
Fee Waiver and/or Expense Reimbursement	(0.56%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	1.68%
Class C
Operating Expenses:
Management Fees	0.48%
Distribution and/or Service (12b-1) Fees	1.00%
Other Expenses	0.34%
Acquired Fund Fee and Expenses	0.02%
Total Annual Fund Operating Expenses	1.84%
Fee Waiver and/or Expense Reimbursement	(0.16%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	1.68%
Class I
Operating Expenses:
Management Fees	0.48%	[2]
Distribution and/or Service (12b-1) Fees	none	[2]
Other Expenses	0.06%	[2]
Acquired Fund Fee and Expenses	0.02%	[2]
Total Annual Fund Operating Expenses	0.56%	[2]
Fee Waiver and/or Expense Reimbursement	(0.02%)	[1],[2]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.54%	[2]
Class N
Operating Expenses:
Management Fees	0.48%
Distribution and/or Service (12b-1) Fees	0.50%
Other Expenses	0.38%
Acquired Fund Fee and Expenses	0.02%
Total Annual Fund Operating Expenses	1.38%
Fee Waiver and/or Expense Reimbursement	(0.20%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	1.18%
Class Y
Operating Expenses:
Management Fees	0.48%
Distribution and/or Service (12b-1) Fees	none
Other Expenses	0.04%
Acquired Fund Fee and Expenses	0.02%
Total Annual Fund Operating Expenses	0.54%
Fee Waiver and/or Expense Reimbursement	(0.02%)	[1]
Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement	0.52%

[1] The Manager has voluntarily agreed to waive fees and/or reimburse Fund expenses in an amount equal to the indirect management fees incurred through the Fund's investment in underlying funds managed by the Manager or its affiliates. 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 net assets per fiscal year for Class A. The Manager has also voluntarily agreed to waive fees and/or reimburse the Fund for certain expenses in order to limit "Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement" (excluding any applicable dividend expense, taxes, interest and fees from borrowing, any subsidiary expenses, Acquired Fund Fees and Expenses, brokerage commissions, extraordinary expenses and certain other Fund expenses) to annual rates of 0.90% for Class A shares, 1.65% for Class B shares, 1.65% for Class C shares, 1.15% for Class N shares, and 0.65% for Class Y shares as calculated on the daily net assets of the Fund. Each of these fee waivers and/or expense limitations may not be amended or withdrawn until one year from 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.

XML

Annual Total Returns (dei_DocumentInformationDocumentAxis, (Oppenheimer Core Bond Fund))	0 Months Ended
	Apr. 27, 2012
(Oppenheimer Core Bond Fund)
Bar Chart Table:
Annual Return 2002	10.06%
Annual Return 2003	5.87%
Annual Return 2004	4.90%
Annual Return 2005	2.35%
Annual Return 2006	4.84%
Annual Return 2007	4.49%
Annual Return 2008	(35.83%)
Annual Return 2009	7.29%
Annual Return 2010	10.96%
Annual Return 2011	7.44%