v3.26.3
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
Aug. 31, 2016
Aug. 31, 2026
Aug. 31, 2017
Aug. 31, 2018
Aug. 31, 2019
Aug. 31, 2020
Aug. 31, 2021
Aug. 31, 2022
Aug. 31, 2023
Aug. 31, 2024
Aug. 31, 2025
Aug. 31, 2026
C000153951 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Equity Income Fund (Class C/JHERX)                    
Accumulated Value $ 10,000   $ 11,315.773 $ 12,673.488894 $ 12,462.609009 $ 11,889.720196 $ 16,467.537837 $ 16,045.25533 $ 16,627.124481 $ 20,072.565126 $ 21,147.458817 $ 25,933.615139
C000153950 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Equity Income Fund (Class A/JHEIX)                    
Accumulated Value 9,500   10,826.12913 12,214.693432 12,099.348372 11,620.524162 16,209.155167 15,900.315812 16,592.600298 20,173.930056 21,410.209471 26,437.337146
C000008922 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Equity Income Fund (Class 1/JIEMX)                    
Accumulated Value 10,000   11,436.3377 12,946.870455 12,872.572897 12,411.566543 17,369.737532 17,112.025515 17,916.767113 21,869.185513 23,282.284148 28,869.671235
C000100841 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class A/JFCAX)                    
Accumulated Value 9,500   11,415.99458 13,789.528718 12,939.789828 16,709.134171 23,589.657365 19,545.061995 22,895.898891 29,223.463085 31,765.563043 34,020.011112
C000100842 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class C/JFCCX)                    
Accumulated Value 10,000   11,935.9146 14,315.066082 13,341.266677 17,106.190944 23,984.837678 19,731.590103 22,953.932405 29,093.800593 31,405.072918 33,393.100398
C000100843 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class I/JFCIX)                    
Accumulated Value 250,000   301,233.6475 365,177.122347 343,726.278566 445,015.057117 630,245.538954 523,737.194098 615,211.838788 787,720.400573 858,856.208172 922,350.62314
C000153970 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class R2/JFACX)                    
Accumulated Value 10,000   12,028.0838 14,533.762069 13,622.771765 17,571.844922 24,781.269076 20,520.942188 24,014.500646 30,628.016797 33,255.483485 35,574.359084
C000100846 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class R4/JFARX)                    
Accumulated Value 10,000   12,043.0178 14,569.909206 13,704.012508 17,736.789841 25,106.03652 20,853.472115 24,488.297576 31,335.484909 34,121.955615 36,603.845402
C000153971 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Fundamental All Cap Core Fund (Class R6/JFAIX)                    
Accumulated Value 1,000,000   1,206,032.61 1,463,492.375193 1,379,108.253665 1,787,203.01797 2,533,823.663971 2,108,048.981228 2,479,396.37589 3,177,996.082347 3,468,679.820369 3,729,275.907891
C000107913 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class R6/JHASX)                    
Accumulated Value 1,000,000   1,032,901.3 1,014,955.135705 1,070,422.433871 1,082,146.663747 1,223,164.182225 1,165,199.92389 1,230,115.48379 1,301,177.926764 1,328,857.845765 1,381,312.755134
C000113522 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class R2/JHARX)                    
Accumulated Value 10,000   10,270.8124 10,050.150363 10,549.168971 10,608.037132 11,949.047054 11,333.848574 11,918.409042 12,553.406263 12,771.335279 13,230.111399
C000107912 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class NAV)                    
Accumulated Value 10,000   10,329.3413 10,149.700627 10,704.183746 10,821.554157 12,246.291192 11,665.954393 12,315.887461 13,039.629849 13,318.051765 13,843.270712
C000107911 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class I/JHAIX)                    
Accumulated Value 250,000   257,726.82 253,240.28059 266,560.278711 269,196.589189 304,107.496916 289,344.996859 305,200.720751 322,920.082508 329,151.39061 341,906.783793
C000107910 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class C/JHACX)                    
Accumulated Value 10,000   10,211.0553 9,929.648214 10,353.44987 10,353.44987 11,587.402497 10,905.790579 11,389.052006 11,919.335948 12,037.481479 12,390.094581
C000107909 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Multi-Asset Absolute Return Fund (Class A/JHAAX)                    
Accumulated Value 9,500   9,766.266285 9,566.566551 10,044.777114 10,111.742328 11,397.47433 10,802.921092 11,358.286302 11,983.513053 12,182.804987 12,617.905217
C000127063 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class A/JHGEX)                    
Accumulated Value 9,500   10,606.075215 11,401.21575 11,769.560756 12,945.208056 16,478.740591 14,159.016413 16,171.80017 19,612.311035 21,210.22643 24,364.892764
C000152689 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class C/JGECX)                    
Accumulated Value 10,000   11,083.2414 11,824.337077 12,130.722914 13,249.419394 16,757.839283 14,302.842641 16,213.736459 19,516.44604 20,958.543171 23,922.449627
C000127064 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class I/JGEFX)                    
Accumulated Value 250,000   279,881.2175 301,721.017818 312,344.853215 344,461.781463 440,145.200503 379,216.521002 434,459.930544 528,208.315634 572,976.791016 660,853.662748
C000127065 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class NAV)                    
Accumulated Value 10,000   11,208.7654 12,097.008946 12,548.229194 13,852.51397 17,719.313585 15,287.346301 17,535.635684 21,343.383062 23,182.10292 26,750.978392
C000152690 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class R2/JGERX)                    
Accumulated Value 10,000   11,168.6189 11,998.437233 12,383.209837 13,605.492706 17,310.49286 14,866.128883 16,941.014263 20,536.476364 22,200.329357 25,504.189476
C000152691 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class R4/JGETX)                    
Accumulated Value 10,000   11,190.5801 12,057.273407 12,484.212777 13,758.949652 17,571.352482 15,133.269867 17,320.444436 21,055.394244 22,807.774489 26,253.354788
C000152692 [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Global Equity Fund (Class R6/JGEMX)                    
Accumulated Value 1,000,000   1,120,871.49 1,210,449.947843 1,254,410.475928 1,384,643.873303 1,770,968.015668 1,527,759.13627 1,750,758.376375 2,131,010.210142 2,314,527.162262 2,670,891.692243
Russell 1000 Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 1000 Index                    
Accumulated Value 10,000   11,615.8473 13,917.853151 14,264.522656 17,474.204866 23,109.996952 20,113.847089 23,212.07548 29,385.682795 34,156.859209 40,910.369124
Russell 3000 Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 3000 Index                    
Accumulated Value 10,000   11,606.2703 13,956.344354 14,139.162835 17,170.811434 22,844.564717 19,810.36014 22,733.842539 28,677.465858 33,219.954081 39,898.475046
Russell 3000 C000153971 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,160,627.03 1,395,634.435403 1,413,916.283519 1,717,081.14345 2,284,456.47173 1,981,036.014005 2,273,384.253925 2,867,746.585801 3,321,995.40815 3,989,847.504687
Russell 3000 C000100843 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 250,000   290,156.7575 348,908.608851 353,479.07088 429,270.285863 571,114.117933 495,259.003502 568,346.063482 716,936.646451 830,498.852038 997,461.876172
Bloomberg U S Aggregate Bond C000107913 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,004,921.06 994,377.337796 1,095,531.307198 1,166,448.850207 1,165,465.312201 1,031,251.0844 1,018,945.887086 1,093,295.321818 1,127,583.041975 1,148,902.581549
Bloomberg U S Aggregate Bond Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Bloomberg U.S. Aggregate Bond Index                    
Accumulated Value 10,000   10,049.2106 9,943.773378 10,955.313072 11,664.488502 11,654.653122 10,312.510844 10,189.458871 10,932.953218 11,275.83042 11,489.025816
Bloomberg U S Aggregate Bond C000107911 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 250,000   251,230.265 248,594.334449 273,882.826799 291,612.212551 291,366.328049 257,812.771099 254,736.47177 273,323.830453 281,895.760492 287,225.645385
MSCI World Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   MSCI World Index                    
Accumulated Value 10,000   11,618.552 13,141.094574 13,175.378113 15,386.969415 19,966.825927 16,956.796769 19,602.745341 24,392.66754 28,216.633828 33,965.191708
MSCI World C000152692 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,161,855.2 1,314,109.457396 1,317,537.811277 1,538,696.941449 1,996,682.592617 1,695,679.676789 1,960,274.534006 2,439,266.75387 2,821,663.382645 3,396,519.170593
MSCI World C000127064 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 250,000   290,463.8 328,527.364349 329,384.452819 384,674.235362 499,170.648154 423,919.919197 490,068.633501 609,816.688467 705,415.845661 849,129.792648
Russell 1000 Value Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   Russell 1000 Value Index                    
Accumulated Value 10,000   11,157.749 12,549.025906 12,626.463937 12,732.567523 17,372.939406 16,291.443178 17,691.541372 21,433.228422 23,432.453741 30,397.355544
Thirty MSCI ACWI 70 Bloomberg Global Aggregate Bond USD Hedged C000107913 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,050,946.98 1,092,230.321306 1,175,747.931271 1,265,099.236275 1,374,645.317733 1,214,970.834011 1,271,011.959065 1,425,346.734205 1,527,125.128628 1,645,158.431827
ICE BofA 0 3 Month U S Treasury Bill C000107913 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,005,574.51 1,020,354.444148 1,044,003.403171 1,055,665.025585 1,056,343.153127 1,060,972.555869 1,107,106.443566 1,168,335.297559 1,221,421.298975 1,268,137.194824
Thirty MSCI ACWI 70 Bloomberg Global Aggregate Bond USD Hedged Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   30% MSCI ACWI/ 70% Bloomberg Global Aggregate Bond (USD Hedged) Index                    
Accumulated Value 10,000   10,509.4698 10,922.303213 11,757.479313 12,650.992363 13,746.453178 12,149.708341 12,710.119592 14,253.467344 15,271.251288 16,451.58432
ICE BofA 0 3 Month U S Treasury Bill Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   ICE BofA 0-3 Month U.S. Treasury Bill Index                    
Accumulated Value 10,000   10,055.7451 10,203.544441 10,440.034031 10,556.650255 10,563.43153 10,609.725557 11,071.064434 11,683.352974 12,214.212988 12,681.371946
Thirty MSCI ACWI 70 Bloomberg Global Aggregate Bond USD Hedged C000107911 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 250,000   262,736.745 273,057.580327 293,936.982818 316,274.809069 343,661.329434 303,742.708504 317,752.989768 356,336.683553 381,781.282159 411,289.607959
ICE BofA 0 3 Month U S Treasury Bill C000107911 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 250,000   251,393.6275 255,088.611037 261,000.850793 263,916.256396 264,085.788282 265,243.138967 276,776.610891 292,083.824389 305,355.324743 317,034.298705
MSCI World Value Index [Member]                        
Account Value [Line Items]                        
Line Graph and Table Measure Name   MSCI World Value Index                    
Accumulated Value 10,000   11,494.4183 12,332.462085 12,059.991997 11,867.384036 15,594.573696 14,433.058034 15,911.036806 19,336.45948 21,644.410362 26,712.021788
MSCI World Value C000152692 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value 1,000,000   1,149,441.83 1,233,246.208517 1,205,999.199763 1,186,738.403623 1,559,457.369651 1,443,305.803466 1,591,103.680643 1,933,645.948079 2,164,441.036317 2,671,202.178905
MSCI World Value C000127064 Index [Member]                        
Account Value [Line Items]                        
Accumulated Value $ 250,000   $ 287,360.4575 $ 308,311.552129 $ 301,499.79994 $ 296,684.600905 $ 389,864.342412 $ 360,826.450866 $ 397,775.92016 $ 483,411.487019 $ 541,110.259079 $ 667,800.544726