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Shareholder Report, Average Annual Return (Details) 74200001100_Franklin California Intermediate-Term Tax-Free Income Fund_Class R6_TSR Annual {Class R6}
12 Months Ended 60 Months Ended 120 Months Ended
Jun. 30, 2026
Jun. 30, 2026
Jun. 30, 2026
Class R6      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Class R6    
Average Annual Return, Percent 5.84% 1.09% 1.61%
Bloomberg Municipal Bond Index [Member]      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Bloomberg Municipal Bond Index    
Average Annual Return, Percent 7.03% 1.05% 2.15%
Bloomberg Municipal M.F. CA Intermediate Index [Member]      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Bloomberg Municipal M.F. CA Intermediate Index    
Average Annual Return, Percent 4.79% 1.07% 1.82%