v3.25.4
Expense Example - CAPITAL INCOME BUILDER
Dec. 30, 2025
USD ($)
Class A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year $ 631
Expense Example, with Redemption, 3 Years 750
Expense Example, with Redemption, 5 Years 880
Expense Example, with Redemption, 10 Years 1,259
Class 529-A  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 409
Expense Example, with Redemption, 3 Years 535
Expense Example, with Redemption, 5 Years 673
Expense Example, with Redemption, 10 Years 1,074
Class C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 235
Expense Example, with Redemption, 3 Years 421
Expense Example, with Redemption, 5 Years 729
Expense Example, with Redemption, 10 Years 1,395
Class 529-C  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 239
Expense Example, with Redemption, 3 Years 434
Expense Example, with Redemption, 5 Years 750
Expense Example, with Redemption, 10 Years 1,150
Class 529-E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 86
Expense Example, with Redemption, 3 Years 268
Expense Example, with Redemption, 5 Years 466
Expense Example, with Redemption, 10 Years 1,037
Class 529-T  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 312
Expense Example, with Redemption, 3 Years 444
Expense Example, with Redemption, 5 Years 587
Expense Example, with Redemption, 10 Years 1,005
Class T  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 307
Expense Example, with Redemption, 3 Years 428
Expense Example, with Redemption, 5 Years 560
Expense Example, with Redemption, 10 Years 946
Class F-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 65
Expense Example, with Redemption, 3 Years 205
Expense Example, with Redemption, 5 Years 357
Expense Example, with Redemption, 10 Years 798
Class 529-F-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 70
Expense Example, with Redemption, 3 Years 221
Expense Example, with Redemption, 5 Years 384
Expense Example, with Redemption, 10 Years 859
Class F-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 38
Expense Example, with Redemption, 3 Years 119
Expense Example, with Redemption, 5 Years 208
Expense Example, with Redemption, 10 Years 468
Class F-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 27
Expense Example, with Redemption, 3 Years 84
Expense Example, with Redemption, 5 Years 146
Expense Example, with Redemption, 10 Years 331
Class 529-F-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 36
Expense Example, with Redemption, 3 Years 113
Expense Example, with Redemption, 5 Years 197
Expense Example, with Redemption, 10 Years 443
Class 529-F-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 32
Expense Example, with Redemption, 3 Years 100
Expense Example, with Redemption, 5 Years 174
Expense Example, with Redemption, 10 Years 393
Class R-1  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 137
Expense Example, with Redemption, 3 Years 428
Expense Example, with Redemption, 5 Years 739
Expense Example, with Redemption, 10 Years 1,624
Class R-2  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 137
Expense Example, with Redemption, 3 Years 428
Expense Example, with Redemption, 5 Years 739
Expense Example, with Redemption, 10 Years 1,624
Class R-3  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 93
Expense Example, with Redemption, 3 Years 290
Expense Example, with Redemption, 5 Years 504
Expense Example, with Redemption, 10 Years 1,120
Class R-4  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 62
Expense Example, with Redemption, 3 Years 195
Expense Example, with Redemption, 5 Years 340
Expense Example, with Redemption, 10 Years 762
Class R-5  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 31
Expense Example, with Redemption, 3 Years 97
Expense Example, with Redemption, 5 Years 169
Expense Example, with Redemption, 10 Years 381
Class R-6  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 27
Expense Example, with Redemption, 3 Years 84
Expense Example, with Redemption, 5 Years 146
Expense Example, with Redemption, 10 Years 331
Class R-2E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 108
Expense Example, with Redemption, 3 Years 337
Expense Example, with Redemption, 5 Years 585
Expense Example, with Redemption, 10 Years 1,294
Class R-5E  
Prospectus [Line Items]  
Expense Example, with Redemption, 1 Year 42
Expense Example, with Redemption, 3 Years 132
Expense Example, with Redemption, 5 Years 230
Expense Example, with Redemption, 10 Years $ 518