v3.25.4
Expense Example
Feb. 27, 2026
USD ($)
Credit Suisse Floating Rate High Income Fund | Credit Suisse Floating Rate High Income Fund | Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 567
Expense Example, with Redemption, 3 Years 786
Expense Example, with Redemption, 5 Years 1,022
Expense Example, with Redemption, 10 Years 1,698
Credit Suisse Floating Rate High Income Fund | Credit Suisse Floating Rate High Income Fund | Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 273
Expense Example, with Redemption, 3 Years 559
Expense Example, with Redemption, 5 Years 970
Expense Example, with Redemption, 10 Years 2,118
Credit Suisse Floating Rate High Income Fund | Credit Suisse Floating Rate High Income Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 72
Expense Example, with Redemption, 3 Years 248
Expense Example, with Redemption, 5 Years 439
Expense Example, with Redemption, 10 Years 991
Credit Suisse Strategic Income Fund | Credit Suisse Strategic Income Fund | Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 576
Expense Example, with Redemption, 3 Years 843
Expense Example, with Redemption, 5 Years 1,130
Expense Example, with Redemption, 10 Years 1,947
Credit Suisse Strategic Income Fund | Credit Suisse Strategic Income Fund | Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 282
Expense Example, with Redemption, 3 Years 618
Expense Example, with Redemption, 5 Years 1,079
Expense Example, with Redemption, 10 Years 2,359
Credit Suisse Strategic Income Fund | Credit Suisse Strategic Income Fund | Class I  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 81
Expense Example, with Redemption, 3 Years 308
Expense Example, with Redemption, 5 Years 554
Expense Example, with Redemption, 10 Years $ 1,259