v3.25.3
Average Annual Total Returns
 12 Months Ended 60 Months Ended 86 Months Ended 120 Months Ended
Aug. 31, 2025
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Dec. 31, 2024
Bloomberg Municipal Bond Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   1.05% 0.99% 1.97% [1] 2.25%
Bloomberg California 1-15 Year Municipal Intermediate Index[Member]          
Prospectus [Line Items]          
Average Annual Return, Percent   0.78% 0.96% 1.67% [1]
A          
Prospectus [Line Items]          
Average Annual Return, Percent   (1.56%) (0.14%)   1.46%
C          
Prospectus [Line Items]          
Average Annual Return, Percent   (0.19%) (0.33%)   0.98%
Z          
Prospectus [Line Items]          
Average Annual Return, Percent   2.04% 0.82%   2.06%
Z | After Taxes on Distributions          
Prospectus [Line Items]          
Average Annual Return, Percent   2.04% 0.81%   2.06%
Z | After Taxes on Distributions and Sales          
Prospectus [Line Items]          
Average Annual Return, Percent   2.41% 1.22%   2.30%
R6          
Prospectus [Line Items]          
Average Annual Return, Percent   2.05% 0.82% 1.83%
Performance Inception Date Oct. 26, 2017        
[1] Since Inception returns for the Indexes are measured from the month-end closest to the inception date for Class R6 shares.