v3.26.1
Shareholder Report, Line Graph (Details) - USD ($)
 12 Months Ended 24 Months Ended 36 Months Ended 48 Months Ended 60 Months Ended 72 Months Ended 84 Months Ended 96 Months Ended 108 Months Ended 120 Months Ended
Jun. 30, 2016
Jun. 30, 2026
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2024
Jun. 30, 2025
Jun. 30, 2026
C000126248 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class R6 Shares)                    
Accumulated Value $ 5,000,000   $ 5,968,655 $ 6,829,676 $ 6,509,066 $ 4,939,554 $ 9,129,623 $ 8,845,500 $ 9,533,353 $ 11,079,216 $ 11,700,525 $ 13,742,444
C000177425 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class R5 Shares)                    
Accumulated Value 10,000   11,925 13,633 12,981 9,842 18,169 17,587 18,934 21,982 23,193 27,213
C000177424 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class R4 Shares)                    
Accumulated Value 10,000   11,907 13,590 12,920 9,781 18,028 17,427 18,733 21,715 22,877 26,804
C000177423 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class R3 Shares)                    
Accumulated Value 10,000   11,878 13,524 12,825 9,686 17,807 17,169 18,410 21,289 22,372 26,148
C000126247 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class R2 Shares)                    
Accumulated Value 10,000   11,850 13,458 12,732 9,590 17,589 16,916 18,094 20,871 21,875 25,503
C000011783 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class L Shares)                    
Accumulated Value 3,000,000   3,577,635 4,089,760 3,893,711 2,952,241 5,450,072 5,275,549 5,680,165 6,594,790 6,957,108 8,163,796
C000126246 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class I Shares)                    
Accumulated Value 1,000,000   1,190,675 1,359,158 1,292,175 978,077 1,803,157 1,743,250 1,875,132 2,175,187 2,292,796 2,687,942
C000011786 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class C Shares)                    
Accumulated Value 10,000   11,817 13,388 12,635 9,492 17,368 16,666 17,791 20,484 21,537 25,187
C000011784 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Undiscovered Managers Behavioral Value Fund (Class A Shares)                    
Accumulated Value 9,475   11,256 12,815 12,154 9,178 16,875 16,274 17,460 20,204 21,243 24,843
Russell 3000 C000126248 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 5,000,000   5,925,478 6,801,152 7,412,064 7,896,036 11,383,277 9,805,132 11,663,562 14,360,766 16,557,359 20,336,331
Russell 3000 C000011783 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 3,000,000   3,555,287 4,080,691 4,447,238 4,737,621 6,829,966 5,883,079 6,998,137 8,616,460 9,934,415 12,201,799
Russell 3000 C000126246 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,185,096 1,360,230 1,482,413 1,579,207 2,276,655 1,961,026 2,332,712 2,872,153 3,311,472 4,067,266
Russell 3000 Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 3000 Index                    
Accumulated Value 10,000   11,851 13,602 14,824 15,792 22,767 19,610 23,327 28,722 33,115 40,673
Russell 2000 Value C000126248 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 5,000,000   6,242,850 7,060,619 6,620,359 5,463,317 9,466,819 7,925,573 8,401,709 9,317,137 9,832,874 14,061,594
Russell 2000 Value C000011783 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 3,000,000   3,745,710 4,236,371 3,972,215 3,277,990 5,680,091 4,755,344 5,041,025 5,590,282 5,899,724 8,436,956
Russell 2000 Value C000126246 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,248,570 1,412,124 1,324,072 1,092,663 1,893,364 1,585,115 1,680,342 1,863,427 1,966,575 2,812,319
Russell 2000 Value Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 2000 Value Index                    
Accumulated Value $ 10,000   $ 12,486 $ 14,121 $ 13,241 $ 10,927 $ 18,934 $ 15,851 $ 16,803 $ 18,634 $ 19,666 $ 28,123