v3.26.1
Expense Example - Oakmark Bond Fund
Jun. 30, 2026
USD ($)
R6 Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 31
Expense Example, with Redemption, 3 Years 129
Expense Example, with Redemption, 5 Years 237
Expense Example, with Redemption, 10 Years 552
Advisor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 46
Expense Example, with Redemption, 3 Years 164
Expense Example, with Redemption, 5 Years 293
Expense Example, with Redemption, 10 Years 668
Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 36
Expense Example, with Redemption, 3 Years 156
Expense Example, with Redemption, 5 Years 287
Expense Example, with Redemption, 10 Years 670
Investor Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 76
Expense Example, with Redemption, 3 Years 237
Expense Example, with Redemption, 5 Years 411
Expense Example, with Redemption, 10 Years $ 918