v3.26.1
S000005650 [Member] Expense Example - Wilmington U.S. Government Money Market Fund
Apr. 30, 2026
USD ($)
Service Class Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 67
Expense Example, with Redemption, 3 Years 222
Expense Example, with Redemption, 5 Years 390
Expense Example, with Redemption, 10 Years 878
Select Class Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 33
Expense Example, with Redemption, 3 Years 133
Expense Example, with Redemption, 5 Years 244
Expense Example, with Redemption, 10 Years 566
Administrative Class Shares  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 61
Expense Example, with Redemption, 3 Years 216
Expense Example, with Redemption, 5 Years 384
Expense Example, with Redemption, 10 Years 872
Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 26
Expense Example, with Redemption, 3 Years 94
Expense Example, with Redemption, 5 Years 168
Expense Example, with Redemption, 10 Years 387
Preferred Institutional Class  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 16
Expense Example, with Redemption, 3 Years 63
Expense Example, with Redemption, 5 Years 113
Expense Example, with Redemption, 10 Years $ 263