v3.25.2
Shareholder Fees - AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND
Sep. 30, 2025
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class A, Class F-1, Class F-2, Class F-3, Class T) | Class A  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.75% [1]
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class A, Class F-1, Class F-2, Class F-3, Class T) | Class T  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 2.50%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class A, Class F-1, Class F-2, Class F-3, Class T) | Class F-1  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class A, Class F-1, Class F-2, Class F-3, Class T) | Class F-2  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class A, Class F-1, Class F-2, Class F-3, Class T) | Class F-3  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
AMERICAN FUNDS SHORT-TERM TAX-EXEMPT BOND FUND (Class R-6) | Class R-6  
Prospectus [Line Items]  
Maximum Sales Charge Imposed on Purchases (as a percentage of Offering Price) 0.00%
Maximum Deferred Sales Charge (as a percentage of Offering Price) 0.00%
Maximum Sales Charge on Reinvested Dividends and Distributions (as a percentage) 0.00%
Redemption Fee (as a percentage of Amount Redeemed) 0.00%
[1] A contingent deferred sales charge of 0.75% applies on certain redemptions made within 18 months following purchases of $250,000 or more made without an initial sales charge. Contingent deferred sales charge is calculated based on the lesser of the offering price and market value of shares being sold.