v3.26.1
S000021046 [Member] Expense Example - S000021046 [Member]
Feb. 28, 2026
USD ($)
C000159975 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 84
Expense Example, with Redemption, 3 Years 264
Expense Example, with Redemption, 5 Years 460
Expense Example, with Redemption, 10 Years 1,024
C000159976 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 80
Expense Example, with Redemption, 3 Years 249
Expense Example, with Redemption, 5 Years 433
Expense Example, with Redemption, 10 Years 966
C000253709 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
C000059843 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 686
Expense Example, with Redemption, 3 Years 922
Expense Example, with Redemption, 5 Years 1,177
Expense Example, with Redemption, 10 Years 1,903
C000059844 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 294
Expense Example, with Redemption, 3 Years 600
Expense Example, with Redemption, 5 Years 1,032
Expense Example, with Redemption, 10 Years 2,038
C000059845 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 144
Expense Example, with Redemption, 3 Years 446
Expense Example, with Redemption, 5 Years 771
Expense Example, with Redemption, 10 Years 1,691
C000059846 [Member]  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years $ 1,120