v3.26.1
Expense Example - AMCAP FUND
Apr. 30, 2026
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 637
Expense Example, with Redemption, 3 Years 768
Expense Example, with Redemption, 5 Years 911
Expense Example, with Redemption, 10 Years 1,327
Class 529-A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 417
Expense Example, with Redemption, 3 Years 560
Expense Example, with Redemption, 5 Years 715
Expense Example, with Redemption, 10 Years 1,167
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 243
Expense Example, with Redemption, 3 Years 443
Expense Example, with Redemption, 5 Years 766
Expense Example, with Redemption, 10 Years 1,472
Class 529-C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 248
Expense Example, with Redemption, 3 Years 459
Expense Example, with Redemption, 5 Years 792
Expense Example, with Redemption, 10 Years 1,243
Class 529-E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 94
Expense Example, with Redemption, 3 Years 293
Expense Example, with Redemption, 5 Years 509
Expense Example, with Redemption, 10 Years 1,131
Class 529-T  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 320
Expense Example, with Redemption, 3 Years 468
Expense Example, with Redemption, 5 Years 630
Expense Example, with Redemption, 10 Years 1,099
Class T  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 315
Expense Example, with Redemption, 3 Years 453
Expense Example, with Redemption, 5 Years 603
Expense Example, with Redemption, 10 Years 1,040
Class F-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 73
Expense Example, with Redemption, 3 Years 227
Expense Example, with Redemption, 5 Years 395
Expense Example, with Redemption, 10 Years 883
Class 529-F-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 77
Expense Example, with Redemption, 3 Years 240
Expense Example, with Redemption, 5 Years 417
Expense Example, with Redemption, 10 Years 930
Class F-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 45
Expense Example, with Redemption, 3 Years 141
Expense Example, with Redemption, 5 Years 246
Expense Example, with Redemption, 10 Years 555
Class F-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 34
Expense Example, with Redemption, 3 Years 106
Expense Example, with Redemption, 5 Years 185
Expense Example, with Redemption, 10 Years 418
Class 529-F-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 44
Expense Example, with Redemption, 3 Years 138
Expense Example, with Redemption, 5 Years 241
Expense Example, with Redemption, 10 Years 542
Class 529-F-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 39
Expense Example, with Redemption, 3 Years 122
Expense Example, with Redemption, 5 Years 213
Expense Example, with Redemption, 10 Years 480
Class R-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 145
Expense Example, with Redemption, 3 Years 449
Expense Example, with Redemption, 5 Years 776
Expense Example, with Redemption, 10 Years 1,702
Class R-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 146
Expense Example, with Redemption, 3 Years 452
Expense Example, with Redemption, 5 Years 782
Expense Example, with Redemption, 10 Years 1,713
Class R-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 100
Expense Example, with Redemption, 3 Years 312
Expense Example, with Redemption, 5 Years 542
Expense Example, with Redemption, 10 Years 1,201
Class R-4  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 69
Expense Example, with Redemption, 3 Years 218
Expense Example, with Redemption, 5 Years 379
Expense Example, with Redemption, 10 Years 847
Class R-5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 39
Expense Example, with Redemption, 3 Years 122
Expense Example, with Redemption, 5 Years 213
Expense Example, with Redemption, 10 Years 480
Class R-6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 34
Expense Example, with Redemption, 3 Years 106
Expense Example, with Redemption, 5 Years 185
Expense Example, with Redemption, 10 Years 418
Class R-2E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 116
Expense Example, with Redemption, 3 Years 362
Expense Example, with Redemption, 5 Years 628
Expense Example, with Redemption, 10 Years 1,386
Class R-5E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 49
Expense Example, with Redemption, 3 Years 154
Expense Example, with Redemption, 5 Years 269
Expense Example, with Redemption, 10 Years $ 604