v3.26.1
Annual Fund Operating Expenses - WASHINGTON MUTUAL INVESTORS FUND
Jun. 30, 2026
Class A  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.24%
Other Expenses (as a percentage of Assets): 0.09%
Expenses (as a percentage of Assets) 0.55%
Class 529-A  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.23%
Other Expenses (as a percentage of Assets): 0.13%
Expenses (as a percentage of Assets) 0.58%
Class C  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 1.00%
Other Expenses (as a percentage of Assets): 0.09%
Expenses (as a percentage of Assets) 1.31%
Class 529-C  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 1.00%
Other Expenses (as a percentage of Assets): 0.14%
Expenses (as a percentage of Assets) 1.36%
Class 529-E  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.50%
Other Expenses (as a percentage of Assets): 0.12%
Expenses (as a percentage of Assets) 0.84%
Class F-1  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.15%
Expenses (as a percentage of Assets) 0.62%
Class 529-F-2  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.13%
Expenses (as a percentage of Assets) 0.35%
Class F-3  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.04%
Expenses (as a percentage of Assets) 0.26%
Class 529-F-3  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.09%
Expenses (as a percentage of Assets) 0.31%
Class F-2  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.15%
Expenses (as a percentage of Assets) 0.37%
R-6  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.04%
Expenses (as a percentage of Assets) 0.26%
Class R-1  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 1.00%
Other Expenses (as a percentage of Assets): 0.13%
Expenses (as a percentage of Assets) 1.35%
Class R-2  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.75%
Other Expenses (as a percentage of Assets): 0.38%
Expenses (as a percentage of Assets) 1.35%
Class R-3  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.50%
Other Expenses (as a percentage of Assets): 0.19%
Expenses (as a percentage of Assets) 0.91%
Class R-4  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.25%
Other Expenses (as a percentage of Assets): 0.14%
Expenses (as a percentage of Assets) 0.61%
Class R-5  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.09%
Expenses (as a percentage of Assets) 0.31%
Class R-2E  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.60%
Other Expenses (as a percentage of Assets): 0.24%
Expenses (as a percentage of Assets) 1.06%
Class R-5E  
Prospectus [Line Items]  
Management Fees (as a percentage of Assets) 0.22%
Distribution and Service (12b-1) Fees 0.00%
Other Expenses (as a percentage of Assets): 0.19%
Expenses (as a percentage of Assets) 0.41%