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DREYFUS CALIFORNIA AMT-FREE MUNICIPAL BOND FUND  
Risk/Return: rr_RiskReturnAbstract  
Supplement [Text Block] ck0000720064_SupplementTextBlock

November 27, 2015


DREYFUS PREMIER CALIFORNIA AMT-FREE MUNICIPAL BOND FUND, INC.


- Dreyfus California AMT-Free Municipal Bond Fund


Supplement to Summary Prospectus dated November 27, 2015


And Statutory Prospectus dated October 1, 2015, As Revised November 27, 2015

Risk/Return [Heading] rr_RiskReturnHeading DREYFUS CALIFORNIA AMT-FREE MUNICIPAL BOND FUND
Strategy Narrative [Text Block] rr_StrategyNarrativeTextBlock

Until January 1, 2016, notwithstanding any contrary information contained in the summary or statutory prospectus, the fund will normally invest substantially all of its net assets in municipal bonds that provide income exempt from federal and California state income taxes.  Thereafter, the fund will normally invest at least 80% of its net assets, plus any borrowings for investment purposes, in such municipal bonds, and may invest a portion of its assets in municipal bonds (as defined in the summary prospectus dated October 1, 2015 and the statutory prospectus dated October 1, 2015, As Revised November 27, 2015, respectively) that do not pay income exempt from California state income taxes.