Amendment Flag Expense Example, with Redemption, 3 Years Bar Chart [Heading] Dow Jones Global Target 2030 Index {3} Dow Jones Global Target 2030 Index Share Class [Axis] Management Fees Bar Chart Closing [Text Block] Annual Fund Operating Expenses [Table] Class I {3} Class I Class I {1} Class I Series Annual Return 2010 Performance Narrative [Text Block] After Taxes on Distributions Madison Target Retirement 2050 Fund {4} Madison Target Retirement 2050 Fund Since Inception Expense Example, With Redemption [Table] Expense Narrative [Text Block] Prospectus Date Bar Chart and Performance Table [Heading] Expense Example, with Redemption, 10 Years Maximum Deferred Sales Charge (as a percentage of amount redeemed) Shareholder Fees: Bar Chart [Table] Risk [Heading] Strategy [Heading] Share Classes Expense Example, with Redemption, 1 Year Redemption Fee Within 30 days of Purchase (as a percentage of amount redeemed) Portfolio Turnover [Heading] Performance Measure [Axis] Plus: Acquired Fund Fees and Expenses Operating Expenses: Shareholder Fees Caption [Text] Objective, Primary [Text Block] Risk/Return: Expense Example: Portfolio Turnover [Text Block] Expense Example, No Redemption [Table] Annual Return 2009 Annual Fund Operating Expenses Maximum Sales Charge Imposed on Purchases (as a percentage of offering price) Expense Example Closing [Text Block] Operating Expenses Caption [Text] Dow Jones Global Target 2040 Index {4} Dow Jones Global Target 2040 Index Document Period End Date Document Type Risk/Return Detail [Table] Average Annual Return: Expense [Heading] Class I {4} Class I Madison Target Retirement 2040 Fund {3} Madison Target Retirement 2040 Fund Central Index Key Bar Chart Table: Expense Example, with Redemption, 5 Years Other Expenses Market Index Performance [Table] Expense Example Narrative [Text Block] Shareholder Fees [Table] Before Taxes Madison Target Retirement 2030 Fund {2} Madison Target Retirement 2030 Fund Distribution and/or Service (Rule 12b-1) Fees Dow Jones Global Target 2020 Index {2} Dow Jones Global Target 2020 Index 1 Year Shares {1} Shares Series [Axis] Risk Narrative [Text Block] Expense Example [Heading] Objective [Heading] After Taxes on Distributions and Sales Class I {2} Class I Madison Target Retirement 2020 Fund {1} Madison Target Retirement 2020 Fund Registrant Name Inception Date Total Annual Fund Operating Expenses Performance [Table] Performance Table Heading Strategy Narrative [Text Block] Annual Return 2008 Risk/Return [Heading]