v3.24.0.1
Document and Entity Information
Total
Prospectus:  
Document Type 485BPOS
Document Period End Date Dec. 31, 2023
Entity Registrant Name AMERICAN FUNDS FUNDAMENTAL INVESTORS
Entity Central Index Key 0000039473
Entity Inv Company Type N-1A
Amendment Flag false
Document Creation Date Feb. 15, 2024
Document Effective Date Mar. 01, 2024
Prospectus Date Mar. 01, 2024
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class A  
Prospectus:  
Trading Symbol ANCFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-1  
Prospectus:  
Trading Symbol RFNAX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-2  
Prospectus:  
Trading Symbol RFNBX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-3  
Prospectus:  
Trading Symbol RFNCX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-4  
Prospectus:  
Trading Symbol RFNEX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-5  
Prospectus:  
Trading Symbol RFNFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class C  
Prospectus:  
Trading Symbol AFICX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class F-1  
Prospectus:  
Trading Symbol AFIFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-A  
Prospectus:  
Trading Symbol CFNAX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-C  
Prospectus:  
Trading Symbol CFNCX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-E  
Prospectus:  
Trading Symbol CFNEX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-F-1  
Prospectus:  
Trading Symbol CFNFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class F-2  
Prospectus:  
Trading Symbol FINFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-6  
Prospectus:  
Trading Symbol RFNGX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-2E  
Prospectus:  
Trading Symbol RFEBX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class R-5E  
Prospectus:  
Trading Symbol RFNHX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class F-3  
Prospectus:  
Trading Symbol FUNFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-T  
Prospectus:  
Trading Symbol TIIIX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class T  
Prospectus:  
Trading Symbol TFFFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-F-2  
Prospectus:  
Trading Symbol FFXFX
AMERICAN FUNDS FUNDAMENTAL INVESTORS | Class 529-F-3  
Prospectus:  
Trading Symbol FEEFX