XML 41 R2.htm IDEA: XBRL DOCUMENT v3.24.3
Investment Objectives and Goals - BNY Mellon California AMT-Free Municipal Bond Fund, Inc.
May 31, 2024
Prospectus [Line Items]  
Risk/Return [Heading] Fund Summary
Objective [Heading] Investment Objective
Objective, Primary [Text Block]

The fund seeks as high a level of current income, exempt from federal and California state income taxes, as is consistent with the preservation of capital.