Prospectus: Risk/Return: Document Type Document Period End Date Amendment Flag Registrant Name Central Index Key Amendment Description Trading Symbol Document Creation Date Document Effective Date Prospectus Date Document [Axis] Prospectus Performance Measure [Axis] Before Taxes After Taxes on Distributions and Sales Return After Taxes on Distributions and Sale of Fund Shares After Taxes on Distributions Return After Taxes on Distributions Series [Axis] Series Ivy Core Equity Fund S000006288 [Member] Ivy Core Equity Fund Member Share Class [Axis] Share Classes Class A,Ivy Core Equity Fund Member C000017277 [Member] Class A Class B,Ivy Core Equity Fund Member Class B,Ivy Core Equity Fund Member C000017278 [Member] C000017279 [Member] Class C,Ivy Core Equity Fund Member Class C,Ivy Core Equity Fund Member Class E,Ivy Core Equity Fund Member C000043902 [Member] Class E,Ivy Core Equity Fund Member Class I,Ivy Core Equity Fund Member Class I,Ivy Core Equity Fund Member C000045545 [Member] Class R Shares C000122149 [Member] Class R Class R,Ivy Core Equity Fund Member C000017280 [Member] Class Y,Ivy Core Equity Fund Member Class Y,Ivy Core Equity Fund Member Risk/Return [Heading] Objective [Heading] Objective, Primary [Text Block] Objective, Secondary [Text Block] Expense [Heading] Expense Narrative [Text Block] Shareholder Fees Caption [Text] Shareholder Fees [Table] Operating Expenses Caption [Text] Annual Fund Operating Expenses [Table] Expense Footnotes [Text Block] Expenses Deferred Charges [Text Block] Expenses Range of Exchange Fees [Text Block] Expense Example [Heading] Expense Example by Year [Heading] Expense Example Narrative [Text Block] Expense Example by, Year, Caption [Text] Expense Example, With Redemption [Table] Expense Example, No Redemption Narrative [Text Block] Expense Example, No Redemption, By Year, Caption [Text] Expense Example, No Redemption [Table] Expense Example Footnotes [Text Block] Expense Example Closing [Text Block] Portfolio Turnover [Heading] Portfolio Turnover [Text Block] Strategy [Heading] Strategy Narrative [Text Block] Risk [Heading] Risk Narrative [Text Block] Risk Footnotes [Text Block] Risk Closing [Text Block] Bar Chart and Performance Table [Heading] Performance Narrative [Text Block] Bar Chart Narrative [Text Block] Bar Chart [Heading] Bar Chart [Table] Bar Chart Footnotes [Text Block] Bar Chart Closing [Text Block] Performance Table Heading Performance Table Narrative Performance [Table] Market Index Performance [Table] Performance Table Footnotes Performance Table Closing [Text Block] Shareholder Fees: Maximum Sales Charge (Load) Imposed on Purchases (as a % of offering price) Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) Maximum Deferred Sales Charge (Load) (as a % of lesser of amount invested or redemption value) Maximum Deferred Sales Charge (as a percentage) Maximum Annual Maintenance Fee Maximum Account Fee Shareholder Fees Column [Text] Maximum Cumulative Sales Charge (as a percentage of Offering Price) Maximum Cumulative Sales Charge (as a percentage) Maximum Deferred Sales Charge (as a percentage of Offering Price) Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee (as a percentage of Amount Redeemed) Redemption Fee Redemption Fee Exchange Fee (as a percentage of Amount Redeemed) Exchange Fee Maximum Account Fee (as a percentage of Assets) Shareholder Fee, Other Operating Expenses: Management Fees Management Fees (as a percentage of Assets) Distribution and Service (12b-1) Fees Distribution and Service (12b-1) Fees Other Expenses Other Expenses (as a percentage of Assets): Other Expenses Total Annual Fund Operating Expenses Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses Fee Waiver and/or Expense Reimbursement Fee Waiver or Reimbursement Fee Waiver and/or Expense Reimbursement Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement Net Expenses (as a percentage of Assets) Total Annual Fund Operating Expenses After Fee Waiver and/or Expense Reimbursement Operating Expenses Column [Text] Distribution or Similar (Non 12b-1) Fees Component1 Other Expenses Component2 Other Expenses Component3 Other Expenses Acquired Fund Fees and Expenses (estimated indirect expenses of underlying funds) Acquired Fund Fees and Expenses Expense Example: 1 Year Expense Example, with Redemption, 1 Year 3 Years Expense Example, with Redemption, 3 Years 5 Years Expense Example, with Redemption, 5 Years 10 Years Expense Example, with Redemption, 10 Years Expense Example, By Year, Column [Text] Column Expense Example, No Redemption: Expense Example, No Redemption, By Year, Column [Text] Column Expense Example, No Redemption, 1 Year 1 Year Expense Example, No Redemption, 3 Years 3 Years Expense Example, No Redemption, 5 Years 5 Years Expense Example, No Redemption, 10 Years 10 Years Bar Chart Table: Annual Return Caption [Text] Caption Column Annual Return, Column [Text] Inception Date Annual Return, Inception Date Annual Return 1990 Annual Return 1991 Annual Return 1992 Annual Return 1993 Annual Return 1994 Annual Return 1995 Annual Return 1996 Annual Return 1997 Annual Return 1998 Annual Return 1999 Annual Return 2000 Annual Return 2001 Annual Return 2002 2002 Annual Return 2003 2003 Annual Return 2004 2004 2005 Annual Return 2005 2006 Annual Return 2006 Annual Return 2007 2007 2008 Annual Return 2008 Annual Return 2009 2009 2010 Annual Return 2010 Annual Return 2011 2011 Annual Return 2012 Annual Return 2013 Annual Return 2014 Annual Return 2015 Annual Return 2016 Annual Return 2017 Annual Return 2018 Annual Return 2019 Annual Return 2020 S&P 500 Index. S&P 500 Index (reflects no deduction for fees, expenses or taxes) S And P Five Hundred Index [Member] Lipper Large-Cap Core Funds Universe Average. Lipper Large Cap Core Funds Universe Average [Member] Lipper Large-Cap Core Funds Universe Average (net of fees and expenses) Average Annual Return: 1 Year 1 Year 5 Years 5 Years 10 Years 10 Years Label Since Inception Life of Class Inception Date Risk/Return Detail [Table] Fee Waiver or Reimbursement over Assets, Date of Termination Portfolio Turnover, Rate Expense Breakpoint Discounts [Text] Expense Breakpoint, Minimum Investment Required [Amount] Expense Exchange Traded Fund Commissions [Text] Expenses Represent Both Master and Feeder [Text]