Shareholder Report, Line Graph (Details) - USD ($) |
4 Months Ended | 11 Months Ended | 12 Months Ended | 16 Months Ended | 23 Months Ended | 24 Months Ended | 35 Months Ended | 36 Months Ended | 47 Months Ended | 48 Months Ended | 59 Months Ended | 60 Months Ended | 71 Months Ended | 72 Months Ended | 84 Months Ended | 96 Months Ended | 108 Months Ended | 120 Months Ended | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Apr. 25, 2025 |
Sep. 23, 2020 |
Aug. 31, 2016 |
Aug. 31, 2025 |
Aug. 31, 2021 |
Aug. 31, 2026 |
Aug. 31, 2017 |
Aug. 31, 2026 |
Aug. 31, 2022 |
Aug. 31, 2018 |
Aug. 31, 2023 |
Aug. 31, 2019 |
Aug. 31, 2024 |
Aug. 31, 2020 |
Aug. 31, 2025 |
Aug. 31, 2021 |
Aug. 31, 2026 |
Aug. 31, 2022 |
Aug. 31, 2023 |
Aug. 31, 2024 |
Aug. 31, 2025 |
Aug. 31, 2026 |
|
| C000106452 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class R6/JULAX) | |||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,173,758.45 | $ 1,316,761.15104 | $ 1,288,559.945792 | $ 1,498,397.796687 | $ 1,967,168.04113 | $ 1,628,201.165238 | $ 1,792,561.576346 | $ 2,162,533.970806 | $ 2,405,839.846098 | $ 2,904,286.653326 | |||||||||||
| C000009055 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class R5/JTLAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,728.0259 | 13,150.268589 | 12,861.518936 | 14,950.454945 | 19,607.858195 | 16,230.668543 | 17,856.019864 | 21,528.732453 | 23,952.177301 | 28,895.387652 | |||||||||||
| C000009054 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class R4/JSLAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,701.7742 | 13,099.497768 | 12,787.77963 | 14,829.896732 | 19,413.663581 | 16,024.97094 | 17,610.930584 | 21,196.745169 | 23,519.586673 | 28,332.198131 | |||||||||||
| C000113497 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class R2/JQLAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,670.1988 | 13,030.330011 | 12,689.106714 | 14,668.473238 | 19,164.498022 | 15,785.095025 | 17,290.692384 | 20,770.388204 | 22,989.81302 | 27,607.468008 | |||||||||||
| C000155628 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class I/JTAIX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 293,091.795 | 328,488.690385 | 321,071.803373 | 372,741.121328 | 488,809.448752 | 404,340.565765 | 444,663.82494 | 536,002.990489 | 595,745.283486 | 718,519.051084 | |||||||||||
| C000009052 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class C/JCLAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,602.4837 | 12,873.571757 | 12,460.454334 | 14,320.900597 | 18,602.203287 | 15,220.256134 | 16,574.638236 | 19,785.759421 | 21,761.022436 | 25,984.474787 | |||||||||||
| C000009050 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class A/JALAX) | |||||||||||||||||||||
| Accumulated Value | 9,550 | 11,160.359582 | 12,470.966365 | 12,159.338366 | 14,079.614523 | 18,407.656207 | 15,177.529476 | 16,640.695225 | 20,003.725981 | 22,161.511299 | 26,634.147288 | |||||||||||
| C000009056 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Aggressive Portfolio (Class 1/JILAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,726.0577 | 13,144.316757 | 12,864.91656 | 14,947.55049 | 19,608.530661 | 16,224.189645 | 17,857.836073 | 21,547.451977 | 23,953.453178 | 28,904.219232 | |||||||||||
| C000009068 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class 1/JILBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,139.6457 | 11,926.557736 | 12,184.011329 | 13,699.922625 | 16,554.064906 | 14,176.628375 | 15,128.016235 | 17,517.417113 | 19,049.281781 | 21,699.90781 | |||||||||||
| C000034075 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class 5/JHLAX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,144.3462 | 11,937.060485 | 12,201.32874 | 13,725.267989 | 16,591.369804 | 14,217.394983 | 15,178.562397 | 17,595.458093 | 19,128.389534 | 21,811.956636 | |||||||||||
| C000009062 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class A/JALBX) | |||||||||||||||||||||
| Accumulated Value | 9,550 | 10,600.950856 | 11,304.37801 | 11,504.959615 | 12,896.237009 | 15,525.924818 | 13,245.631774 | 14,084.029137 | 16,252.145004 | 17,607.860748 | 19,987.344615 | |||||||||||
| C000009064 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class C/JCLBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,017.0225 | 11,675.865344 | 11,800.030816 | 13,126.253979 | 15,682.889382 | 13,296.005058 | 14,035.839055 | 16,088.578411 | 17,300.72843 | 19,501.794228 | |||||||||||
| C000155629 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class I/JTBIX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 278,306.5375 | 297,763.840901 | 304,003.089139 | 341,592.089181 | 412,464.755032 | 353,048.695613 | 376,487.107777 | 435,951.687794 | 473,400.212425 | 539,314.767964 | |||||||||||
| C000113498 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class R2/JQLBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,087.9577 | 11,816.50948 | 12,015.49111 | 13,447.73741 | 16,189.734564 | 13,802.053892 | 14,658.720601 | 16,910.740287 | 18,293.806489 | 20,765.270841 | |||||||||||
| C000009066 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class R4/JSLBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,118.3022 | 11,874.910336 | 12,112.442267 | 13,583.074203 | 16,375.093443 | 14,004.87301 | 14,906.025527 | 17,236.824543 | 18,695.563387 | 21,255.454712 | |||||||||||
| C000009067 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class R5/JTSBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,138.148 | 11,918.599256 | 12,172.701647 | 13,684.629219 | 16,533.330567 | 14,164.395118 | 15,105.513224 | 17,506.701618 | 19,034.604604 | 21,681.856135 | |||||||||||
| C000106453 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Balanced Portfolio (Class R6/JULBX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,114,479.52 | 1,192,887.032621 | 1,219,073.503481 | 1,371,283.181044 | 1,657,557.413944 | 1,420,077.339935 | 1,515,999.545429 | 1,757,504.079294 | 1,910,634.407946 | 2,178,768.866638 | |||||||||||
| C000106454 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class R6/JULCX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,051,652.57 | 1,064,447.869071 | 1,130,716.721054 | 1,214,758.666049 | 1,320,080.015943 | 1,174,655.209496 | 1,215,545.168776 | 1,349,893.894172 | 1,437,444.124454 | 1,529,801.706255 | |||||||||||
| C000009076 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class R5/JTLRX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,508.9419 | 10,631.148073 | 11,287.995045 | 12,120.350352 | 13,163.888277 | 11,708.85751 | 12,109.979199 | 13,441.023101 | 14,305.393388 | 15,204.268347 | |||||||||||
| C000009075 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class R4/JSLCX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,488.3219 | 10,580.948046 | 11,220.528264 | 12,015.058359 | 13,034.425642 | 11,569.029948 | 11,941.297731 | 13,228.537863 | 14,051.529122 | 14,905.395301 | |||||||||||
| C000113499 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class R2/JQLCX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,461.2672 | 10,535.577138 | 11,145.74867 | 11,905.633826 | 12,884.289904 | 11,402.67503 | 11,753.899086 | 12,991.921997 | 13,757.268587 | 14,570.016649 | |||||||||||
| C000155630 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class I/JTOIX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 262,815.5625 | 265,536.502531 | 282,016.507764 | 302,444.587836 | 328,576.199452 | 292,092.997435 | 301,943.176564 | 334,935.16382 | 356,264.588656 | 378,737.655592 | |||||||||||
| C000009073 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class C/JCLCX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,398.0878 | 10,408.142335 | 10,934.949523 | 11,616.464675 | 12,484.771596 | 10,984.787214 | 11,247.493234 | 12,351.791915 | 13,007.580909 | 13,690.21082 | |||||||||||
| C000009071 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class A/JALRX) | |||||||||||||||||||||
| Accumulated Value | 9,550 | 10,000.861612 | 10,082.158516 | 10,666.44017 | 11,412.227427 | 12,360.008122 | 10,946.907428 | 11,290.086955 | 12,484.376062 | 13,238.528756 | 14,030.256188 | |||||||||||
| C000009077 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Conservative Portfolio (Class 1/JILCX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,511.0406 | 10,634.951789 | 11,293.105458 | 12,128.091476 | 13,174.712903 | 11,717.905322 | 12,130.774936 | 13,464.550486 | 14,319.492352 | 15,232.63478 | |||||||||||
| C000009086 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class 1/JILGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,447.1258 | 12,540.018501 | 12,530.841214 | 14,345.029965 | 18,117.861355 | 15,242.858239 | 16,577.620613 | 19,644.017745 | 21,677.627162 | 25,519.218321 | |||||||||||
| C000034076 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class 5/JHLGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,447.4173 | 12,547.468542 | 12,545.481525 | 14,361.419903 | 18,163.765378 | 15,286.120534 | 16,622.960257 | 19,714.200522 | 21,755.853399 | 25,649.711254 | |||||||||||
| C000009080 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class A/JALGX) | |||||||||||||||||||||
| Accumulated Value | 9,550 | 10,894.968329 | 11,890.751765 | 11,837.939229 | 13,497.293121 | 16,992.88904 | 14,243.721845 | 15,431.868455 | 18,222.323723 | 20,028.787225 | 23,519.958459 | |||||||||||
| C000009082 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class C/JCLGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,321.2245 | 12,267.88333 | 12,127.282714 | 13,735.33833 | 17,172.016265 | 14,288.597073 | 15,380.862442 | 18,027.285482 | 19,686.066696 | 22,945.003694 | |||||||||||
| C000155631 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class I/JTGIX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 286,043.1925 | 313,193.86885 | 312,737.066196 | 357,854.069669 | 451,882.441591 | 379,869.393775 | 412,561.762925 | 488,812.995683 | 538,857.728839 | 634,616.045063 | |||||||||||
| C000113500 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class R2/JQLGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,393.0038 | 12,430.309909 | 12,363.029116 | 14,080.259547 | 17,719.191252 | 14,830.495468 | 16,054.032552 | 18,940.836096 | 20,812.557018 | 24,409.734438 | |||||||||||
| C000009084 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class R4/JSLGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,418.7748 | 12,481.466731 | 12,448.229833 | 14,217.244663 | 17,924.665317 | 15,045.318779 | 16,329.111908 | 19,313.929052 | 21,262.76398 | 24,995.145794 | |||||||||||
| C000009085 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class R5/JTLGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,438.5801 | 12,531.120751 | 12,519.173706 | 14,328.540086 | 18,101.210589 | 15,226.433523 | 16,559.217105 | 19,621.456657 | 21,646.879558 | 25,505.130835 | |||||||||||
| C000106455 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Growth Portfolio (Class R6/JULGX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,145,275.11 | 1,255,052.500859 | 1,254,643.50435 | 1,436,682.77918 | 1,816,134.147824 | 1,527,676.416961 | 1,662,155.617922 | 1,970,508.223335 | 2,175,444.566361 | 2,563,615.47088 | |||||||||||
| C000106456 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class R6/JULMX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,081,272.96 | 1,123,945.462243 | 1,173,977.98441 | 1,289,083.978249 | 1,478,375.209494 | 1,295,485.057517 | 1,361,184.804918 | 1,541,546.392374 | 1,655,772.081942 | 1,824,734.234676 | |||||||||||
| C000009104 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class R5/JTLMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,804.1691 | 11,224.103168 | 11,717.221233 | 12,854.191367 | 14,741.332426 | 12,915.00664 | 13,561.286875 | 15,358.15603 | 16,484.775988 | 18,152.620726 | |||||||||||
| C000009103 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class R4/JSLMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,791.813 | 11,181.432091 | 11,650.62768 | 12,756.821108 | 14,590.954622 | 12,765.012649 | 13,378.675442 | 15,112.825106 | 16,190.551343 | 17,793.67368 | |||||||||||
| C000113501 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class R2/JQLMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,764.6448 | 11,125.474294 | 11,562.411165 | 12,632.621352 | 14,418.952586 | 12,578.30725 | 13,156.259462 | 14,817.211433 | 15,843.51773 | 17,375.146078 | |||||||||||
| C000155632 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class I/JTMIX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 270,009.36 | 280,373.342572 | 292,345.72729 | 320,709.562888 | 367,623.923083 | 321,882.500265 | 337,831.243828 | 382,129.865665 | 410,285.736792 | 451,249.854582 | |||||||||||
| C000009101 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class C/JCLMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,689.4858 | 10,986.844419 | 11,348.399275 | 12,321.197565 | 13,974.368004 | 12,120.052378 | 12,592.279555 | 14,103.067131 | 14,979.106224 | 16,326.51173 | |||||||||||
| C000009099 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class A/JALMX) | |||||||||||||||||||||
| Accumulated Value | 9,550 | 10,288.247566 | 10,642.473782 | 11,069.990468 | 12,109.926516 | 13,829.055438 | 12,081.349645 | 12,646.255553 | 14,259.304545 | 15,255.338784 | 16,739.588359 | |||||||||||
| C000034077 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class 5/JHLMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,812.2172 | 11,231.576072 | 11,733.187132 | 12,887.948284 | 14,781.239052 | 12,953.850875 | 13,612.205215 | 15,417.008982 | 16,573.290977 | 18,250.62586 | |||||||||||
| C000009105 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager Lifestyle Moderate Portfolio (Class 1/JILMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,806.1765 | 11,227.467178 | 11,722.20653 | 12,862.383242 | 14,741.737828 | 12,925.310278 | 13,573.570943 | 15,360.897773 | 16,501.914015 | 18,172.618946 | |||||||||||
| C000037309 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2010 Lifetime Portfolio (Class 1/JLAOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,823.7668 | 11,245.900632 | 11,799.297795 | 12,849.394237 | 14,519.677999 | 13,028.057975 | 13,632.909929 | 15,233.011111 | 16,312.177484 | 17,699.108304 | |||||||||||
| C000037307 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2010 Lifetime Portfolio (Class A/JLAAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,232.89764 | 10,605.911113 | 11,083.201295 | 12,025.687363 | 13,543.049751 | 12,104.57567 | 12,633.866035 | 14,049.995068 | 14,990.730191 | 16,209.448823 | |||||||||||
| C000153956 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2010 Lifetime Portfolio (Class I/JHRLX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 270,415.0825 | 280,793.502496 | 294,776.920643 | 320,411.576515 | 361,826.40047 | 324,780.876823 | 339,233.898658 | 379,336.847853 | 405,454.242935 | 439,681.08047 | |||||||||||
| C000113503 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2010 Lifetime Portfolio (Class R2/JLAEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,775.0736 | 11,146.293742 | 11,648.971081 | 12,617.043097 | 14,206.419208 | 12,701.874317 | 13,226.296221 | 14,717.758192 | 15,690.663529 | 16,934.130569 | |||||||||||
| C000106459 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2010 Lifetime Portfolio (Class R6/JLAIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,082,938.9 | 1,125,727.321224 | 1,183,070.114833 | 1,287,512.242582 | 1,457,063.056042 | 1,308,173.198796 | 1,369,576.637935 | 1,530,755.100221 | 1,639,784.708912 | 1,779,995.631899 | |||||||||||
| C000106460 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class R6/JLBJX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,092,883.58 | 1,147,106.048013 | 1,195,652.734542 | 1,318,070.237594 | 1,513,960.689584 | 1,340,056.430797 | 1,405,644.380556 | 1,584,601.310086 | 1,704,693.758956 | 1,869,837.961347 | |||||||||||
| C000037339 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class R5/JLBHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,934.2603 | 11,460.536636 | 11,950.278373 | 13,152.056684 | 15,098.482292 | 13,338.721417 | 14,003.100322 | 15,760.921268 | 16,928.522468 | 18,564.540248 | |||||||||||
| C000037338 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class R4/JLBGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,904.0689 | 11,407.936437 | 11,870.817907 | 13,040.393446 | 15,031.834571 | 13,279.973161 | 13,916.682404 | 15,667.66171 | 16,834.639134 | 18,418.668578 | |||||||||||
| C000113504 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class R2/JLBKX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,887.7608 | 11,340.536063 | 11,779.979341 | 12,901.126977 | 14,765.31312 | 12,988.702215 | 13,568.933131 | 15,218.306019 | 16,280.27822 | 17,763.434684 | |||||||||||
| C000153957 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class I/JHREX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 273,178.275 | 286,433.576044 | 298,500.352348 | 328,269.756668 | 376,632.321793 | 332,592.708172 | 348,951.666331 | 392,474.174382 | 421,805.162717 | 461,687.093935 | |||||||||||
| C000037330 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class A/JLBAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,337.244595 | 10,806.94325 | 11,223.352173 | 12,305.728104 | 14,081.571049 | 12,410.638169 | 12,975.810068 | 14,552.657238 | 15,593.00764 | 17,037.026024 | |||||||||||
| C000037340 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2015 Lifetime Portfolio (Class 1/JLBOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,934.217 | 11,460.502186 | 11,951.489009 | 13,168.98815 | 15,104.039005 | 13,361.965427 | 14,027.972016 | 15,788.693625 | 16,980.223388 | 18,597.94642 | |||||||||||
| C000037351 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class 1/JLDOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,084.253 | 11,781.922375 | 12,172.611392 | 13,602.328908 | 15,871.956788 | 13,834.590037 | 14,553.538126 | 16,513.817775 | 17,794.443206 | 19,736.638173 | |||||||||||
| C000037341 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class A/JLDAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,489.6967 | 11,110.832971 | 11,431.530832 | 12,725.69238 | 14,798.943221 | 12,864.576904 | 13,476.486293 | 15,217.633498 | 16,355.078101 | 18,073.109383 | |||||||||||
| C000153958 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class I/JHRVX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 276,908.9325 | 294,154.358378 | 303,666.9897 | 339,349.582782 | 395,590.121483 | 345,015.522635 | 362,178.326709 | 411,011.906169 | 442,946.21604 | 490,781.240307 | |||||||||||
| C000113505 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class R2/JLDEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,036.8906 | 11,670.778187 | 11,994.424505 | 13,349.535514 | 15,511.745631 | 13,475.764023 | 14,088.174027 | 15,908.661822 | 17,090.712463 | 18,862.12345 | |||||||||||
| C000037349 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class R4/JLDGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,054.614 | 11,729.561307 | 12,089.355395 | 13,474.165184 | 15,704.799621 | 13,663.968606 | 14,343.709916 | 16,234.074331 | 17,463.203015 | 19,319.858977 | |||||||||||
| C000037350 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class R5/JLDHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,084.2839 | 11,781.965528 | 12,170.062883 | 13,598.22244 | 15,865.809661 | 13,842.685067 | 14,543.429886 | 16,500.090726 | 17,797.187938 | 19,715.563733 | |||||||||||
| C000106461 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2020 Lifetime Portfolio (Class R6/JLDIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,109,173.96 | 1,179,709.936932 | 1,218,438.374915 | 1,362,485.717438 | 1,590,979.599825 | 1,388,503.994708 | 1,459,759.048318 | 1,657,517.23403 | 1,787,066.576544 | 1,981,303.343127 | |||||||||||
| C000106462 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class R6/JLEIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,127,464.25 | 1,215,031.241398 | 1,243,082.704119 | 1,413,071.852327 | 1,696,562.101249 | 1,452,912.065571 | 1,537,780.001019 | 1,763,787.543147 | 1,912,544.02642 | 2,145,874.665399 | |||||||||||
| C000037361 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class R5/JLEHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,267.7857 | 12,136.498061 | 12,396.317304 | 14,095.522168 | 16,912.157912 | 14,475.992176 | 15,312.355508 | 17,533.278691 | 19,020.661614 | 21,326.962104 | |||||||||||
| C000037360 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class R4/JLEGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,245.0521 | 12,094.916029 | 12,325.36506 | 13,983.53993 | 16,746.22862 | 14,307.562426 | 15,116.140009 | 17,270.633166 | 18,696.138447 | 20,917.65961 | |||||||||||
| C000113506 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class R2/JLEEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,220.4678 | 12,035.121898 | 12,240.585138 | 13,851.542231 | 16,553.35771 | 14,108.254125 | 14,865.852417 | 16,939.118376 | 18,281.735428 | 20,419.251839 | |||||||||||
| C000153959 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class I/JHRNX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 281,525.5825 | 303,298.557091 | 309,885.576956 | 352,060.969892 | 422,132.548403 | 361,208.344339 | 381,807.893673 | 437,323.315035 | 473,600.49103 | 531,098.143348 | |||||||||||
| C000037352 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class A/JLEAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,660.728335 | 11,449.630334 | 11,655.49629 | 13,198.252163 | 15,788.573996 | 13,463.022988 | 14,194.399962 | 16,202.904718 | 17,506.655729 | 19,545.645593 | |||||||||||
| C000037362 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2025 Lifetime Portfolio (Class 1/JLEOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,267.7456 | 12,136.424898 | 12,397.573455 | 14,096.987821 | 16,915.340235 | 14,480.099766 | 15,336.33717 | 17,559.689678 | 19,030.882974 | 21,338.422828 | |||||||||||
| C000037373 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class 1/JLFOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,429.1677 | 12,467.64885 | 12,607.682988 | 14,553.091843 | 17,887.543835 | 15,002.074446 | 16,059.519967 | 18,705.44408 | 20,494.942101 | 23,407.407206 | |||||||||||
| C000037363 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class A/JLFAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,814.68334 | 11,764.975081 | 11,845.727635 | 13,631.069506 | 16,680.438035 | 13,955.200246 | 14,871.078364 | 17,253.083083 | 18,847.262094 | 21,438.840356 | |||||||||||
| C000153960 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class I/JHRGX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 285,540.43 | 311,278.244847 | 314,271.792164 | 362,807.305488 | 445,679.855422 | 373,890.011719 | 399,463.98757 | 465,427.148277 | 509,562.766979 | 581,483.663574 | |||||||||||
| C000113507 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class R2/JLFEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,373.6629 | 12,358.05513 | 12,429.577621 | 14,294.224697 | 17,479.924094 | 14,613.322471 | 15,547.852334 | 18,033.266552 | 19,682.559897 | 22,360.563289 | |||||||||||
| C000037371 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class R4/JLFGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,399.1584 | 12,411.300732 | 12,518.324495 | 14,425.123193 | 17,694.863848 | 14,815.248597 | 15,824.975643 | 18,386.569831 | 20,110.598502 | 22,912.9008 | |||||||||||
| C000037372 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class R5/JLFHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,420.3249 | 12,469.437515 | 12,597.778078 | 14,542.24588 | 17,875.8619 | 15,002.553418 | 16,043.293151 | 18,687.848417 | 20,475.51342 | 23,365.042035 | |||||||||||
| C000106463 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2030 Lifetime Portfolio (Class R6/JLFIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,142,595.83 | 1,248,139.634879 | 1,261,813.978128 | 1,457,376.671781 | 1,792,341.146187 | 1,505,075.981102 | 1,610,341.747758 | 1,876,651.917673 | 2,057,165.057616 | 2,350,654.213458 | |||||||||||
| C000106464 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class R6/JLHIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,154,577.84 | 1,275,885.454267 | 1,275,310.042686 | 1,488,040.86352 | 1,870,851.547835 | 1,550,670.365778 | 1,676,484.920801 | 1,982,829.597149 | 2,194,774.411415 | 2,551,089.123569 | |||||||||||
| C000037383 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class R5/JLHHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,538.6913 | 12,733.875291 | 12,716.694492 | 14,841.338768 | 18,646.091683 | 15,449.085012 | 16,692.11283 | 19,729.303018 | 21,825.627286 | 25,373.186134 | |||||||||||
| C000037382 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class R4/JLHGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,517.5263 | 12,688.358749 | 12,641.969856 | 14,718.410497 | 18,446.406666 | 15,270.80906 | 16,462.059373 | 19,440.16477 | 21,462.826628 | 24,896.298748 | |||||||||||
| C000113508 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class R2/JLHEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,490.7299 | 12,629.966366 | 12,557.479832 | 14,583.252981 | 18,241.933176 | 15,045.687631 | 16,172.313686 | 19,051.061532 | 20,973.586452 | 24,275.839467 | |||||||||||
| C000153961 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class I/JHRMX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 288,526.4575 | 318,238.058055 | 317,668.141429 | 370,080.408214 | 464,548.239755 | 384,694.065069 | 415,037.382645 | 490,706.670369 | 541,824.84043 | 629,600.946804 | |||||||||||
| C000037374 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class A/JLHAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,929.57558 | 12,027.935737 | 11,972.840815 | 13,913.569348 | 17,406.238816 | 14,379.760199 | 15,483.129121 | 18,235.722603 | 20,106.746767 | 23,277.07364 | |||||||||||
| C000037384 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2035 Lifetime Portfolio (Class 1/JLHOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,548.7019 | 12,755.219386 | 12,742.230619 | 14,858.937222 | 18,669.690871 | 15,470.104267 | 16,716.596316 | 19,778.794752 | 21,861.733449 | 25,415.161028 | |||||||||||
| C000037395 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class 1/JLIOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,626.4624 | 12,932.475594 | 12,833.222465 | 15,090.945498 | 19,306.521292 | 15,881.576464 | 17,355.136625 | 20,770.681834 | 23,212.0711 | 27,363.899126 | |||||||||||
| C000037385 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class A/JLIAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 11,002.209065 | 12,193.224051 | 12,060.122939 | 14,131.996342 | 18,015.224312 | 14,750.439607 | 16,059.179146 | 19,170.301279 | 21,333.062847 | 25,064.992702 | |||||||||||
| C000153962 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class I/JHRDX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 290,454.8925 | 322,881.94184 | 320,148.142413 | 376,196.749831 | 481,364.157606 | 395,399.031915 | 431,713.775915 | 516,808.424986 | 576,620.188594 | 679,812.224038 | |||||||||||
| C000113509 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class R2/JLIEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,569.0408 | 12,807.894643 | 12,657.015723 | 14,814.394813 | 18,876.510759 | 15,438.323269 | 16,803.069965 | 20,027.016188 | 22,258.54389 | 26,156.947113 | |||||||||||
| C000037393 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class R4/JLIGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,600.39 | 12,873.202539 | 12,751.96851 | 14,963.815428 | 19,110.746426 | 15,678.910057 | 17,101.71862 | 20,438.048099 | 22,775.738347 | 26,815.776253 | |||||||||||
| C000037394 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class R5/JLIHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,624.9801 | 12,928.96737 | 12,828.184776 | 15,093.094701 | 19,314.035602 | 15,880.289976 | 17,348.274939 | 20,772.253827 | 23,185.660897 | 27,344.793086 | |||||||||||
| C000106465 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2040 Lifetime Portfolio (Class R6/JLIIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,162,363.67 | 1,293,634.850739 | 1,284,435.567525 | 1,511,303.906183 | 1,934,706.531549 | 1,591,935.504014 | 1,738,703.345113 | 2,084,311.859611 | 2,328,508.523967 | 2,746,993.058903 | |||||||||||
| C000106466 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class R6/JLJIX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,163,365.18 | 1,296,973.959788 | 1,285,371.8922 | 1,513,133.326077 | 1,959,462.732341 | 1,604,351.417579 | 1,770,947.284824 | 2,142,508.247057 | 2,412,883.939277 | 2,881,194.743872 | |||||||||||
| C000037405 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class R5/JLJHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,635.2374 | 12,963.410454 | 12,835.417647 | 15,108.981616 | 19,544.374108 | 16,002.131614 | 17,667.298068 | 21,348.814056 | 24,041.727842 | 28,696.380655 | |||||||||||
| C000037404 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class R4/JLJGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,600.3544 | 12,903.185099 | 12,757.775364 | 14,975.548888 | 19,344.592495 | 15,794.802706 | 17,411.204276 | 20,997.496403 | 23,587.664199 | 28,110.884692 | |||||||||||
| C000113510 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class R2/JLJEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,579.8935 | 12,842.343101 | 12,667.315064 | 14,830.503464 | 19,102.520898 | 15,573.028915 | 17,096.015547 | 20,588.41935 | 23,069.090821 | 27,422.424346 | |||||||||||
| C000153963 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class I/JHROX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 290,490.8675 | 323,521.26812 | 319,892.517698 | 376,516.305186 | 486,768.509991 | 398,039.90303 | 439,327.161169 | 530,992.386739 | 596,867.15887 | 712,055.191003 | |||||||||||
| C000037396 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class A/JLJAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 11,004.311225 | 12,228.384478 | 12,070.429947 | 14,140.154778 | 18,230.999264 | 14,873.760567 | 16,355.193515 | 19,713.326895 | 22,103.018371 | 26,282.6251 | |||||||||||
| C000037406 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2045 Lifetime Portfolio (Class 1/JLJOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,627.2104 | 12,966.094258 | 12,842.794481 | 15,109.439571 | 19,554.5755 | 16,007.448247 | 17,660.061686 | 21,373.310759 | 24,036.524879 | 28,707.421134 | |||||||||||
| C000037417 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class 1/JLKOX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,617.8783 | 12,947.176649 | 12,822.178003 | 15,090.038678 | 19,526.174598 | 15,961.202992 | 17,667.342906 | 21,460.284156 | 24,269.372903 | 29,235.413972 | |||||||||||
| C000037407 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class A/JLKAX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 11,007.60801 | 12,218.666364 | 12,055.823799 | 14,129.687104 | 18,215.895261 | 14,835.090496 | 16,369.870063 | 19,810.897454 | 22,332.221062 | 26,791.047754 | |||||||||||
| C000153964 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class I/JHRPX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 290,479.78 | 323,271.272593 | 320,173.493296 | 376,179.473411 | 486,485.075681 | 397,413.983176 | 439,903.360092 | 533,917.377079 | 603,348.435946 | 726,320.5068 | |||||||||||
| C000113511 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class R2/JLKEX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.6326 | 12,842.532398 | 12,657.151599 | 14,823.968618 | 19,089.593902 | 15,530.753936 | 17,119.913483 | 20,704.582147 | 23,304.871033 | 27,940.81674 | |||||||||||
| C000037415 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class R4/JLKGX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,598.0086 | 12,893.492591 | 12,747.245573 | 14,960.892723 | 19,322.80473 | 15,769.112931 | 17,416.296595 | 21,104.939682 | 23,826.088407 | 28,622.329323 | |||||||||||
| C000037416 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class R5/JLKHX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,628.9277 | 12,959.832194 | 12,823.567853 | 15,089.662333 | 19,520.542644 | 15,970.455944 | 17,675.003468 | 21,460.461082 | 24,280.194414 | 29,238.660511 | |||||||||||
| C000106467 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2050 Lifetime Portfolio (Class R6/JLKRX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,163,125.26 | 1,296,670.603327 | 1,284,995.718349 | 1,512,666.273943 | 1,957,394.590594 | 1,601,140.945528 | 1,772,976.84884 | 2,155,367.407154 | 2,439,488.606929 | 2,938,621.246725 | |||||||||||
| C000138477 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class R6/JLKTX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,162,791.92 | 1,296,233.537018 | 1,285,905.848161 | 1,513,226.020805 | 1,959,148.004294 | 1,603,075.264266 | 1,774,043.064862 | 2,156,373.525547 | 2,441,001.957369 | 2,939,167.983434 | |||||||||||
| C000138476 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class R5/JLKSX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,624.428 | 12,943.960181 | 12,818.988058 | 15,090.788991 | 19,528.626647 | 15,971.74098 | 17,663.188119 | 21,459.511 | 24,279.912213 | 29,220.489269 | |||||||||||
| C000138475 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class R4/JLKQX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,609.9094 | 12,924.267359 | 12,789.694071 | 15,031.984131 | 19,420.374678 | 15,872.583727 | 17,549.121574 | 21,291.826417 | 24,055.919399 | 28,944.042769 | |||||||||||
| C000138473 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class R2/JLKNX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,593.5131 | 12,866.87525 | 12,693.361063 | 14,860.719208 | 19,139.775774 | 15,577.180787 | 17,163.455888 | 20,753.768178 | 23,362.387127 | 27,996.413334 | |||||||||||
| C000153974 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class I/JHRTX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 290,119.66 | 323,392.659866 | 320,127.221887 | 376,369.384307 | 486,546.2411 | 397,577.879418 | 439,853.388918 | 534,193.306519 | 603,232.21975 | 726,319.552392 | |||||||||||
| C000138479 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class A/JLKLX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,994.66939 | 12,213.536899 | 12,054.447398 | 14,135.070213 | 18,215.927885 | 14,839.197797 | 16,364.431091 | 19,816.670328 | 22,322.988266 | 26,784.737283 | |||||||||||
| C000138478 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2055 Lifetime Portfolio (Class 1/JLKUX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,622.1645 | 12,949.950073 | 12,827.792028 | 15,089.673495 | 19,532.582347 | 15,973.797995 | 17,686.165179 | 21,472.483975 | 24,281.78617 | 29,252.372453 | |||||||||||
| C000167626 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class 1/JRETX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,609.9786 | 12,936.566914 | 12,817.341702 | 15,081.104705 | 19,532.470112 | 15,966.494235 | 17,684.051373 | 21,500.704333 | 24,314.481083 | 29,280.475076 | |||||||||||
| C000167627 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class A/JJERX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,981.34801500 | 12,197.83396500 | 12,039.67050700 | 14,110.45651100 | 18,212.07131000 | 14,830.10933700 | 16,364.20955200 | 19,814.28959800 | 22,339.84946400 | 26,802.64410700 | |||||||||||
| C000167619 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class I/JMENX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 290,102.4475 | 323,321.164941 | 319,879.792659 | 376,170.818305 | 486,676.529655 | 397,803.131813 | 440,314.801078 | 534,991.89724 | 604,590.084535 | 728,043.262539 | |||||||||||
| C000167621 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class R2/JVIMX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,592.3435 | 12,882.327429 | 12,718.271762 | 14,911.224604 | 19,238.359246 | 15,649.94064 | 17,264.518098 | 20,872.77493 | 23,514.510763 | 28,191.138977 | |||||||||||
| C000167623 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class R4/JROUX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,590.0281 | 12,903.569447 | 12,774.06974 | 15,005.680562 | 19,412.567436 | 15,848.341822 | 17,527.844489 | 21,271.173164 | 24,014.530619 | 28,858.238151 | |||||||||||
| C000167624 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class R5/JGHTX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,622.0489 | 12,943.399619 | 12,818.785874 | 15,083.385274 | 19,537.352078 | 15,979.613941 | 17,683.905444 | 21,486.444862 | 24,315.579238 | 29,268.271491 | |||||||||||
| C000167625 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2060 Lifetime Portfolio (Class R6/JESRX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,162,366.47 | 1,295,708.687951 | 1,284,569.03982 | 1,512,011.622588 | 1,958,718.642912 | 1,601,970.321789 | 1,775,100.204553 | 2,158,660.590568 | 2,441,880.508187 | 2,941,594.627306 | |||||||||||
| C000221539 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class R6/JABEX) | |||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,375,279.5 | $ 1,125,011.802742 | $ 1,247,592.22251 | $ 1,515,905.768603 | $ 1,716,571.869521 | $ 2,068,244.918487 | |||||||||||||||
| C000221538 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class R5/JABDX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 13,752.795 | 11,251.40914 | 12,468.293932 | 15,156.251878 | 17,142.580688 | 20,647.031944 | |||||||||||||||
| C000221537 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class R4/JABBX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 13,727.84 | 11,220.850053 | 12,416.808535 | 15,071.932203 | 17,037.092866 | 20,486.135613 | |||||||||||||||
| C000221536 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class R2/JAAZX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 13,713.9408 | 11,195.375983 | 12,376.20513 | 15,008.246858 | 16,908.830307 | 20,294.586683 | |||||||||||||||
| C000221535 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class I/JABSX) | |||||||||||||||||||||
| Accumulated Value | 250,000 | 343,482.375 | 280,658.311686 | 310,940.698003 | 377,484.597512 | 426,751.656245 | 513,469.338208 | |||||||||||||||
| C000221534 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class A/JAAWX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 13,013.364955 | 10,604.991653 | 11,703.152537 | 14,174.589414 | 15,970.720811 | 19,171.142265 | |||||||||||||||
| C000221540 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2065 Lifetime Portfolio (Class 1/JAAVX) | |||||||||||||||||||||
| Accumulated Value | 10,000 | 13,741.3365 | 11,244.953257 | 12,454.614035 | 15,129.688523 | 17,115.670444 | 20,617.147235 | |||||||||||||||
| C000259699 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2070 Lifetime Portfolio (Class 1/JHOPX) | |||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 11,470 | $ 13,842.402153 | |||||||||||||||||||
| C000259695 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2070 Lifetime Portfolio (Class A/JHOQX) | |||||||||||||||||||||
| Accumulated Value | 9,500 | 10,877.5 | 13,079.622137 | |||||||||||||||||||
| C000259698 [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Multimanager 2070 Lifetime Portfolio (Class R6/JHBZX) | |||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,147,000 | 1,384,697.90268 | |||||||||||||||||||
| Standard & Poor's 500 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P 500 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,000 | 10,000 | 11,832.5074 | 13,834.0945 | 11,623.4067 | 14,243.949098 | 12,280.856323 | 13,908.750015 | 14,238.979302 | 14,315.103326 | 18,102.778593 | 17,455.368033 | 20,977.428147 | 22,895.454097 | 25,252.586678 | 20,324.841803 | 23,565.539253 | 29,960.134815 | 34,717.685581 | 41,793.081509 | |
| 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 C000153958 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 | |||||||||||
| Bloomberg U S Aggregate Bond C000106461 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 | |||||||||||
| Standard And Poor s 500 C000167619 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 290,585.1675 | 347,718.750371 | 357,877.583157 | 436,384.200832 | 572,386.352436 | 508,121.045091 | 589,138.481344 | 749,003.370395 | 867,942.13956 | 1,044,827.037756 | |||||||||||
| Standard And Poor s 500 C000167625 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,162,340.67 | 1,390,875.001483 | 1,431,510.332629 | 1,745,536.803329 | 2,289,545.409746 | 2,032,484.180367 | 2,356,553.925378 | 2,996,013.481582 | 3,471,768.558244 | 4,179,308.15103 | |||||||||||
| Standard And Poor s 500 C000221535 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 345,852.3625 | 307,021.408063 | 355,974.482525 | 452,569.464785 | 524,435.703618 | 631,314.666877 | |||||||||||||||
| Standard And Poor s 500 C000221539 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,383,409.45 | 1,228,085.632251 | 1,423,897.930098 | 1,810,277.859135 | 2,097,742.814465 | 2,525,258.6675 | |||||||||||||||
| Standard And poor s 500 C000259698 index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,183,250.74 | 1,424,394.909808 | |||||||||||||||||||
| John Hancock Lifestyle Aggressive C000106452 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,151,730.15 | 1,311,376.856189 | 1,319,014.682185 | 1,501,665.359012 | 1,954,925.478145 | 1,677,176.019718 | 1,857,436.801847 | 2,247,917.419382 | 2,549,983.795321 | 3,134,021.042371 | |||||||||||
| Morningstar U S Aggressive Target Allocation C000106452 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,153,926.25 | 1,322,555.100994 | 1,335,486.555426 | 1,566,338.667913 | 2,011,908.575459 | 1,722,831.274182 | 1,960,649.283809 | 2,414,253.240183 | 2,779,430.433044 | 3,318,256.570215 | |||||||||||
| John Hancock Lifestyle Aggressive C000155628 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 287,932.5375 | 327,844.214047 | 329,753.670546 | 375,416.339753 | 488,731.369536 | 419,294.004929 | 464,359.200461 | 561,979.354845 | 637,495.94883 | 783,505.260593 | |||||||||||
| Morningstar U S Aggressive Target Allocation C000155628 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 288,481.5625 | 330,638.775249 | 333,871.638857 | 391,584.666979 | 502,977.143866 | 430,707.818547 | 490,162.320954 | 603,563.310048 | 694,857.608264 | 829,564.142557 | |||||||||||
| John Hancock Lifestyle Aggressive Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock Lifestyle Aggressive Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,517.3015 | 13,113.768562 | 13,190.146822 | 15,016.65359 | 19,549.254781 | 16,771.760197 | 18,574.368018 | 22,479.174193 | 25,499.837952 | 31,340.210422 | |||||||||||
| Morningstar U S Aggressive Target Allocation Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Morningstar U.S. Aggressive Target Allocation Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,539.2625 | 13,225.55101 | 13,354.865554 | 15,663.386679 | 20,119.085754 | 17,228.312741 | 19,606.492837 | 24,142.5324 | 27,794.304328 | 33,182.565699 | |||||||||||
| Morningstar U S Moderate Target Allocation Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Morningstar U.S. Moderate Target Allocation Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,988.5167 | 12,055.755946 | 12,587.327258 | 14,319.276902 | 16,900.392289 | 14,781.478227 | 16,092.86289 | 18,942.831018 | 21,057.40087 | 23,823.904508 | |||||||||||
| John Hancock Lifestyle Balanced Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock Lifestyle Balanced Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,974.0469 | 11,904.53491 | 12,467.653577 | 13,934.332759 | 16,576.579051 | 14,395.361997 | 15,332.840945 | 17,797.015392 | 19,514.595381 | 22,427.626264 | |||||||||||
| Morningstar U S Moderate Target Allocation C000155629 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 274,712.9175 | 301,393.898646 | 314,683.181457 | 357,981.922551 | 422,509.807228 | 369,536.955681 | 402,321.572269 | 473,570.775481 | 526,435.021784 | 595,597.612741 | |||||||||||
| John Hancock Lifestyle Balanced C000155629 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 274,351.1725 | 297,613.372751 | 311,691.339433 | 348,358.31899 | 414,414.476303 | 359,884.049961 | 383,321.023668 | 444,925.384855 | 487,864.884589 | 560,690.656668 | |||||||||||
| Morningstar U S Moderate Target Allocation C000106453 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,098,851.67 | 1,205,575.594585 | 1,258,732.725827 | 1,431,927.690205 | 1,690,039.228913 | 1,478,147.822724 | 1,609,286.289075 | 1,894,283.101925 | 2,105,740.087138 | 2,382,390.450965 | |||||||||||
| John Hancock Lifestyle Balanced C000106453 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,097,404.69 | 1,190,453.491002 | 1,246,765.357728 | 1,393,433.275954 | 1,657,657.905204 | 1,439,536.199838 | 1,533,284.094665 | 1,779,701.539411 | 1,951,459.538347 | 2,242,762.62666 | |||||||||||
| John Hancock Lifestyle Conservative C000155630 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 261,921.87 | 268,868.226576 | 287,724.229551 | 310,262.971842 | 334,724.709555 | 298,984.545637 | 308,407.348557 | 342,236.411837 | 365,478.18623 | 389,538.19634 | |||||||||||
| Morningstar U S Conservative Target Allocation C000155630 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 259,605.1175 | 268,518.602096 | 289,205.481961 | 312,853.279191 | 333,466.890803 | 296,068.652362 | 305,637.357312 | 340,252.643246 | 362,969.845747 | 386,010.815845 | |||||||||||
| John Hancock Lifestyle Conservative C000106454 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,047,687.48 | 1,075,472.906305 | 1,150,896.918207 | 1,241,051.887373 | 1,338,898.838225 | 1,195,938.182553 | 1,233,629.394233 | 1,368,945.647353 | 1,461,912.744925 | 1,558,152.785365 | |||||||||||
| Morningstar U S Conservative Target Allocation C000106454 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,038,420.47 | 1,074,074.408385 | 1,156,821.927844 | 1,251,413.116763 | 1,333,867.563212 | 1,184,274.609449 | 1,222,549.429249 | 1,361,010.572986 | 1,451,879.382989 | 1,544,043.263379 | |||||||||||
| John Hancock Lifestyle Conservative Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock Lifestyle Conservative Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,476.8748 | 10,754.729063 | 11,508.96918200 | 12,410.51887400 | 13,388.98838300 | 11,959.381826 | 12,336.293943 | 13,689.456474 | 14,619.12745 | 15,581.527854 | |||||||||||
| Morningstar U S Conservative Target Allocation Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Morningstar U.S. Conservative Target Allocation Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,384.2047 | 10,740.744084 | 11,568.219279 | 12,514.131168 | 13,338.675633 | 11,842.746095 | 12,225.494293 | 13,610.10573 | 14,518.79383 | 15,440.432634 | |||||||||||
| Morningstar U S Moderately Aggressive Target Allocation Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Morningstar U.S. Moderately Aggressive Target Allocation Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,288.9016 | 12,638.514396 | 12,954.027578 | 14,948.317352 | 18,438.714923 | 15,906.620978 | 17,736.277193 | 21,355.016391 | 24,211.104619 | 28,230.807012 | |||||||||||
| John Hancock Lifestyle Growth Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock Lifestyle Growth Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,293.8231 | 12,601.076686 | 12,871.071891 | 14,534.681487 | 18,228.891859 | 15,758.902897 | 17,199.111239 | 20,457.227284 | 22,913.410776 | 27,360.811925 | |||||||||||
| Morningstar U S Moderately Aggressive Target Allocation C000155631 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 282,222.54 | 315,962.859902 | 323,850.689441 | 373,707.933802 | 460,967.873079 | 397,665.524444 | 443,406.929813 | 533,875.409763 | 605,277.615466 | 705,770.17529 | |||||||||||
| John Hancock Lifestyle Growth C000155631 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 282,345.5775 | 315,026.917159 | 321,776.797296 | 363,367.037198 | 455,722.296515 | 393,972.572463 | 429,977.781017 | 511,430.682161 | 572,835.26947 | 684,020.298205 | |||||||||||
| Morningstar U S Moderately Aggressive Target Allocation C000106455 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,128,890.16 | 1,263,851.439609 | 1,295,402.757765 | 1,494,831.735209 | 1,843,871.492319 | 1,590,662.097778 | 1,773,627.719256 | 2,135,501.639058 | 2,421,110.461871 | 2,823,080.701168 | |||||||||||
| John Hancock Lifestyle Growth C000106455 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,129,382.31 | 1,260,107.668635 | 1,287,107.189182 | 1,453,468.14879 | 1,822,889.186056 | 1,575,890.289848 | 1,719,911.124062 | 2,045,722.728636 | 2,291,341.077873 | 2,736,081.19281 | |||||||||||
| John Hancock Lifestyle Moderate C000155632 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 267,686.165 | 282,340.258635 | 299,956.328509 | 329,572.516604 | 372,978.489191 | 327,931.1282 | 343,102.41586 | 389,210.738376 | 420,320.574545 | 465,296.183218 | |||||||||||
| Morningstar U S Moderately Conservative Target Allocation C000155632 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 266,741.835 | 282,307.888209 | 299,644.119201 | 331,275.361463 | 369,939.154886 | 325,420.436527 | 344,353.286881 | 393,362.362925 | 428,037.88853 | 469,061.202421 | |||||||||||
| John Hancock Lifestyle Moderate C000106456 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,070,744.66 | 1,129,361.034539 | 1,199,825.314035 | 1,318,290.066416 | 1,491,913.956763 | 1,311,724.512799 | 1,372,409.663438 | 1,556,842.953501 | 1,681,282.298175 | 1,861,184.732868 | |||||||||||
| Morningstar U S Moderately Conservative Target Allocation C000106456 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,066,967.34 | 1,129,231.552835 | 1,198,576.476801 | 1,325,101.445849 | 1,479,756.619542 | 1,301,681.746105 | 1,377,413.147522 | 1,573,449.451697 | 1,712,151.554118 | 1,876,244.809682 | |||||||||||
| John Hancock Lifestyle Moderate Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock Lifestyle Moderate Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,707.4466 | 11,293.610345 | 11,998.25314 | 13,182.900664 | 14,919.139567 | 13,117.245127 | 13,724.096633 | 15,568.429533 | 16,812.82298 | 18,611.847327 | |||||||||||
| Morningstar U S Moderately Conservative Target Allocation Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | Morningstar U.S. Moderately Conservative Target Allocation Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,669.6734 | 11,292.315528 | 11,985.764768 | 13,251.014458 | 14,797.566195 | 13,016.817461 | 13,774.131475 | 15,734.494517 | 17,121.515541 | 18,762.448097 | |||||||||||
| S And P Target Date 2010 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2010 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,635.32 | 11,207.094159 | 11,702.70851 | 12,774.136295 | 14,162.538646 | 12,708.160077 | 13,379.023593 | 15,016.162264 | 16,168.10658 | 17,540.937923 | |||||||||||
| John Hancock 2010 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2010 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,686.6505 | 11,217.951329 | 11,919.282277 | 12,887.714784 | 14,448.148464 | 13,021.541463 | 13,608.607373 | 15,260.217776 | 16,368.837499 | 17,806.685351 | |||||||||||
| S And P Target Date 2010 C000153956 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 265,883 | 280,177.353987 | 292,567.71276 | 319,353.407398 | 354,063.466186 | 317,704.00196 | 334,475.589869 | 375,404.056657 | 404,202.66456 | 438,523.448135 | |||||||||||
| John Hancock 2010 Lifetime C000153956 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 267,166.2625 | 280,448.783228 | 297,982.056941 | 322,192.869621 | 361,203.711633 | 325,538.536611 | 340,215.184359 | 381,505.444437 | 409,220.937513 | 445,167.133828 | |||||||||||
| S And P Target Date 2010 C000106459 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,063,532 | 1,120,709.415948 | 1,170,270.851041 | 1,277,413.629591 | 1,416,253.864741 | 1,270,816.007838 | 1,337,902.359475 | 1,501,616.226627 | 1,616,810.658238 | 1,754,093.792539 | |||||||||||
| John Hancock 2010 Lifetime C000106459 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,068,665.05 | 1,121,795.132912 | 1,191,928.227762 | 1,288,771.478483 | 1,444,814.84653 | 1,302,154.146443 | 1,360,860.737434 | 1,526,021.777745 | 1,636,883.750048 | 1,780,668.535307 | |||||||||||
| John Hancock 2015 Lifetime C000153957 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 269,075.06 | 284,941.09782 | 302,466.397192 | 329,758.17311 | 375,197.477571 | 334,846.215754 | 351,110.48669 | 396,646.70793 | 426,722.377129 | 469,930.258106 | |||||||||||
| S And P Target Date 2015 C000153957 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 269,125.23 | 286,135.217498 | 297,266.289493 | 325,135.337071 | 366,423.116044 | 327,798.590958 | 345,863.40085 | 390,050.895108 | 420,763.654709 | 459,647.753654 | |||||||||||
| John Hancock 2015 Lifetime C000106460 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,076,300.24 | 1,139,764.391282 | 1,209,865.58877 | 1,319,032.692441 | 1,500,789.910283 | 1,339,384.863015 | 1,404,441.94676 | 1,586,586.831719 | 1,706,889.508514 | 1,879,721.032421 | |||||||||||
| S And P Target Date 2015 C000106460 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,076,500.92 | 1,144,540.869993 | 1,189,065.157975 | 1,300,541.348288 | 1,465,692.46418 | 1,311,194.363837 | 1,383,453.603407 | 1,560,203.58044 | 1,683,054.618843 | 1,838,591.014623 | |||||||||||
| John Hancock 2015 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2015 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,763.0024 | 11,397.643913 | 12,098.655888 | 13,190.326925 | 15,007.899104 | 13,393.848631 | 14,044.419468 | 15,865.868318 | 17,068.895086 | 18,797.210325 | |||||||||||
| S And P Target Date 2015 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2015 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,765.0092 | 11,445.4087 | 11,890.65158 | 13,005.413483 | 14,656.924642 | 13,111.943639 | 13,834.536035 | 15,602.035805 | 16,830.546189 | 18,385.910147 | |||||||||||
| S And P Target Date 2020 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2020 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,889.1926 | 11,670.546071 | 12,075.478308 | 13,222.910061 | 15,046.531967 | 13,369.236518 | 14,212.667291 | 16,165.494172 | 17,515.029554 | 19,262.496346 | |||||||||||
| John Hancock 2020 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2020 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,929.933 | 11,762.146733 | 12,436.185256 | 13,714.431345 | 15,846.049912 | 14,001.447054 | 14,730.212852 | 16,762.213308 | 18,083.612443 | 20,165.752346 | |||||||||||
| S And P Target Date 2020 C000153958 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 272,229.815 | 291,763.651764 | 301,886.957683 | 330,572.751497 | 376,163.299138 | 334,230.912908 | 355,316.68223 | 404,137.354261 | 437,875.738814 | 481,562.40861 | |||||||||||
| John Hancock 2020 Lifetime C000153958 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 273,248.325 | 294,053.668332 | 310,904.631395 | 342,860.783608 | 396,151.247772 | 350,036.176321 | 368,255.321274 | 419,055.332682 | 452,090.311049 | 504,143.808627 | |||||||||||
| S And P Target Date 2020 C000106461 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,088,919.26 | 1,167,054.607055 | 1,207,547.830733 | 1,322,291.005988 | 1,504,653.196553 | 1,336,923.651632 | 1,421,266.72892 | 1,616,549.417044 | 1,751,502.955256 | 1,926,249.634441 | |||||||||||
| John Hancock 2020 Lifetime C000106461 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,092,993.3 | 1,176,214.673327 | 1,243,618.525581 | 1,371,443.134434 | 1,584,604.991088 | 1,400,144.705283 | 1,473,021.285095 | 1,676,221.330727 | 1,808,361.244195 | 2,016,575.234507 | |||||||||||
| John Hancock 2025 Lifetime C000106462 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,110,221.09 | 1,215,026.749153 | 1,275,578.117508 | 1,431,071.880891 | 1,701,314.378642 | 1,484,263.361278 | 1,571,809.86007 | 1,805,553.311409 | 1,953,785.211892 | 2,206,712.515573 | |||||||||||
| S And P Target Date 2025 C000106462 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,101,420.15 | 1,195,215.459872 | 1,226,777.753564 | 1,352,887.329276 | 1,582,308.785563 | 1,398,753.387179 | 1,498,861.873361 | 1,713,240.789612 | 1,868,874.666774 | 2,085,303.71564 | |||||||||||
| John Hancock 2025 Lifetime C000153959 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 277,555.2725 | 303,756.687288 | 318,894.529377 | 357,767.970223 | 425,328.594661 | 371,065.84032 | 392,952.465018 | 451,388.327853 | 488,446.302974 | 551,678.128894 | |||||||||||
| S And P Target Date 2025 C000153959 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 275,355.0375 | 298,803.864968 | 306,694.438391 | 338,221.832319 | 395,577.196391 | 349,688.346795 | 374,715.468341 | 428,310.197404 | 467,218.666695 | 521,325.928912 | |||||||||||
| John Hancock 2025 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2025 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,102.2109 | 12,150.267492 | 12,755.781176 | 14,310.71881 | 17,013.143788 | 14,842.633614 | 15,718.098602 | 18,055.533116 | 19,537.852121 | 22,067.125158 | |||||||||||
| S And P Target Date 2025 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2025 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,014.2015 | 11,952.154599 | 12,267.777536 | 13,528.873293 | 15,823.087856 | 13,987.533872 | 14,988.618734 | 17,132.407897 | 18,688.746669 | 20,853.037158 | |||||||||||
| S And P Target Date 2030 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2030 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,125.9402 | 12,226.19266 | 12,431.857027 | 13,796.45324 | 16,552.329956 | 14,512.977302 | 15,762.483983 | 18,293.213521 | 20,112.308967 | 22,821.265226 | |||||||||||
| John Hancock 2030 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2030 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,288.4939 | 12,538.506082 | 13,034.792691 | 14,820.392966 | 18,074.978531 | 15,567.148644 | 16,670.330355 | 19,453.308145 | 21,264.086847 | 24,501.541518 | |||||||||||
| S And P Target Date 2030 C000106463 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,112,594.02 | 1,222,619.265957 | 1,243,185.702654 | 1,379,645.323946 | 1,655,232.9955 | 1,451,297.730068 | 1,576,248.398202 | 1,829,321.352002 | 2,011,230.896566 | 2,282,126.522422 | |||||||||||
| John Hancock 2030 Lifetime C000106463 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,128,849.39 | 1,253,850.608158 | 1,303,479.26908 | 1,482,039.296548 | 1,807,497.853022 | 1,556,714.864356 | 1,667,033.035501 | 1,945,330.814503 | 2,126,408.684669 | 2,450,154.151741 | |||||||||||
| S And P Target Date 2030 C000153960 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 278,148.505 | 305,654.816489 | 310,796.425663 | 344,911.330986 | 413,808.248874 | 362,824.432516 | 394,062.099549 | 457,330.337999 | 502,807.72414 | 570,531.630604 | |||||||||||
| John Hancock 2030 Lifetime C000153960 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 282,212.3475 | 313,462.652039 | 325,869.817269 | 370,509.824136 | 451,874.463254 | 389,178.716088 | 416,758.258874 | 486,332.703624 | 531,602.171165 | 612,538.537933 | |||||||||||
| John Hancock 2035 Lifetime C000106464 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,144,907.2 | 1,288,861.328255 | 1,321,769.515223 | 1,516,079.04496 | 1,895,799.431809 | 1,620,181.304493 | 1,754,781.301148 | 2,076,163.512649 | 2,293,141.783472 | 2,692,101.352664 | |||||||||||
| S And P Target Date 2035 C000106464 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,123,884.49 | 1,248,904.782531 | 1,258,323.822576 | 1,405,469.064578 | 1,735,113.457079 | 1,507,243.921751 | 1,659,348.813706 | 1,955,581.372528 | 2,173,682.728278 | 2,513,862.66236 | |||||||||||
| John Hancock 2035 Lifetime C000153961 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 286,226.8 | 322,215.332064 | 330,442.378806 | 379,019.76124 | 473,949.857952 | 405,045.326123 | 438,695.325287 | 519,040.878162 | 573,285.445868 | 673,025.338166 | |||||||||||
| S And P Target Date 2035 C000153961 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 280,971.1225 | 312,226.195633 | 314,580.955644 | 351,367.266145 | 433,778.36427 | 376,810.980438 | 414,837.203427 | 488,895.343133 | 543,420.682071 | 628,465.665592 | |||||||||||
| John Hancock 2035 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2035 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,449.072 | 12,888.613283 | 13,217.695153 | 15,160.79045 | 18,957.994319 | 16,201.813046 | 17,547.813013 | 20,761.635128 | 22,931.417836 | 26,921.013528 | |||||||||||
| S And P Target Date 2035 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2035 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,238.8449 | 12,489.047825 | 12,583.238225 | 14,054.690645 | 17,351.13457 | 15,072.439217 | 16,593.488137 | 19,555.813725 | 21,736.827282 | 25,138.626623 | |||||||||||
| S And P Target Date 2040 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2040 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,316.1313 | 12,672.04939 | 12,694.699158 | 14,235.22629 | 17,923.275051 | 15,478.732651 | 17,247.891116 | 20,600.319558 | 23,115.510424 | 27,226.205904 | |||||||||||
| John Hancock 2040 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2040 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.0332 | 13,187.317062 | 13,350.939622 | 15,428.079876 | 19,713.1854 | 16,794.737997 | 18,413.09373 | 22,054.45886 | 24,664.95385 | 29,426.398633 | |||||||||||
| S And P Target Date 2040 C000153962 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 282,903.2825 | 316,801.234745 | 317,367.478936 | 355,880.65724 | 448,081.876272 | 386,968.316267 | 431,197.277901 | 515,007.988942 | 577,887.7606 | 680,655.147595 | |||||||||||
| John Hancock 2040 Lifetime C000153962 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 289,450.83 | 329,682.926547 | 333,773.490536 | 385,701.996895 | 492,829.634996 | 419,868.44991 | 460,327.343228 | 551,361.471477 | 616,623.846219 | 735,659.965781 | |||||||||||
| S And P Target Date 2040 C000106465 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,131,613.13 | 1,267,204.938979 | 1,269,469.915743 | 1,423,522.628958 | 1,792,327.505087 | 1,547,873.265067 | 1,724,789.111601 | 2,060,031.955763 | 2,311,551.042394 | 2,722,620.590375 | |||||||||||
| John Hancock 2040 Lifetime C000106465 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,157,803.32 | 1,318,731.706186 | 1,335,093.962142 | 1,542,807.98758 | 1,971,318.539984 | 1,679,473.799639 | 1,841,309.372909 | 2,205,445.885906 | 2,466,495.384875 | 2,942,639.863123 | |||||||||||
| John Hancock 2045 Lifetime C000153963 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 289,450.83 | 330,018.278489 | 332,750.090594 | 385,713.130569 | 499,627.494272 | 424,359.206817 | 470,158.352444 | 569,134.673624 | 643,647.79414 | 778,927.460491 | |||||||||||
| S And P Target Date 2045 C000153963 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 284,493.9225 | 319,680.796551 | 319,126.0193 | 358,653.031876 | 456,701.586971 | 393,040.683133 | 441,636.001302 | 531,689.318208 | 601,021.498964 | 717,221.270642 | |||||||||||
| John Hancock 2045 Lifetime C000106466 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,157,803.32 | 1,320,073.113956 | 1,331,000.362376 | 1,542,852.522275 | 1,998,509.977087 | 1,697,436.827266 | 1,880,633.409772 | 2,276,538.694491 | 2,574,591.176555 | 3,115,709.841958 | |||||||||||
| S And P Target Date 2045 C000106466 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,137,975.69 | 1,278,723.186202 | 1,276,504.077197 | 1,434,612.127499 | 1,826,806.347876 | 1,572,162.732524 | 1,766,544.005197 | 2,126,757.272819 | 2,404,085.995843 | 2,868,885.082552 | |||||||||||
| John Hancock 2045 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2045 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.0332 | 13,200.73114 | 13,310.003624 | 15,428.525223 | 19,985.099771 | 16,974.368273 | 18,806.334098 | 22,765.386945 | 25,745.911766 | 31,157.09842 | |||||||||||
| S And P Target Date 2045 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2045 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,379.7569 | 12,787.231862 | 12,765.040772 | 14,346.121275 | 18,268.063479 | 15,721.627325 | 17,665.440052 | 21,267.572728 | 24,040.859958 | 28,688.850825 | |||||||||||
| S And P Target Date 2050 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2050 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,437.7045 | 12,892.952467 | 12,834.388164 | 14,441.048982 | 18,502.923264 | 15,897.286101 | 17,927.26525 | 21,685.841542 | 24,565.146624 | 29,457.518626 | |||||||||||
| John Hancock 2050 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2050 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.0332 | 13,200.73114 | 13,310.003624 | 15,428.525223 | 19,985.310062 | 16,960.890522 | 18,859.889661 | 22,950.562952 | 26,154.414491 | 32,020.692473 | |||||||||||
| S And P Target Date 2050 C000106467 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,143,770.45 | 1,289,295.246655 | 1,283,438.816391 | 1,444,104.898188 | 1,850,292.326395 | 1,589,728.610115 | 1,792,726.525007 | 2,168,584.154206 | 2,456,514.662404 | 2,945,751.862575 | |||||||||||
| John Hancock 2050 Lifetime C000106467 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,157,803.32 | 1,320,073.113956 | 1,331,000.362376 | 1,542,852.522275 | 1,998,531.006167 | 1,696,089.052133 | 1,885,988.966073 | 2,295,056.295136 | 2,615,441.449072 | 3,202,069.247296 | |||||||||||
| S And P Target Date 2050 C000153964 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 285,942.6125 | 322,323.811664 | 320,859.704098 | 361,026.224547 | 462,573.081599 | 397,432.152529 | 448,181.631252 | 542,146.038552 | 614,128.665602 | 736,437.965645 | |||||||||||
| John Hancock 2050 Lifetime C000153964 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 289,450.83 | 330,018.278489 | 332,750.090594 | 385,713.130569 | 499,632.751542 | 424,022.263033 | 471,497.241518 | 573,764.073784 | 653,860.362268 | 800,517.311824 | |||||||||||
| John Hancock 2055 Lifetime C000138477 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,157,803.32 | 1,320,073.113956 | 1,331,000.362376 | 1,542,852.522275 | 1,998,531.006167 | 1,696,089.052133 | 1,885,988.966073 | 2,295,056.295136 | 2,615,441.449072 | 3,201,967.820476 | |||||||||||
| S And P Target Date 2055 C000138477 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,147,615.08 | 1,294,734.972319 | 1,288,184.105358 | 1,449,500.077357 | 1,861,920.594347 | 1,599,034.759525 | 1,804,587.38385 | 2,184,454.670325 | 2,480,885.343844 | 2,987,557.103412 | |||||||||||
| John Hancock 2055 Lifetime C000153974 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 289,450.83 | 330,018.278489 | 332,750.090594 | 385,713.130569 | 499,632.751542 | 424,022.263033 | 471,497.241518 | 573,764.073784 | 653,860.362268 | 800,491.955119 | |||||||||||
| S And P Target Date 2055 C000153974 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 286,903.77 | 323,683.74308 | 322,046.02634 | 362,375.01934 | 465,480.148588 | 399,758.689882 | 451,146.845963 | 546,113.667582 | 620,221.335962 | 746,889.275854 | |||||||||||
| John Hancock 2055 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2055 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.0332 | 13,200.73114 | 13,310.003624 | 15,428.525223 | 19,985.310062 | 16,960.890522 | 18,859.889661 | 22,950.562952 | 26,154.414491 | 32,019.678205 | |||||||||||
| S And P Target Date 2055 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2055 Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,476.1508 | 12,947.349723 | 12,881.841053 | 14,495.000773 | 18,619.205943 | 15,990.347595 | 18,045.873838 | 21,844.546703 | 24,808.853438 | 29,875.571034 | |||||||||||
| John Hancock 2060 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2060 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,578.0332 | 13,200.73114 | 13,310.003624 | 15,428.525223 | 19,985.310062 | 16,960.890522 | 18,859.889661 | 22,950.562952 | 26,154.414491 | 32,019.678205 | |||||||||||
| John Hancock 2060 Lifetime C000167619 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 289,450.83 | 330,018.278489 | 332,750.090594 | 385,713.130569 | 499,632.751542 | 424,022.263033 | 471,497.241518 | 573,764.073784 | 653,860.362268 | 800,491.955119 | |||||||||||
| S And P Target Date 2060 C000167619 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 287,602.8775 | 325,277.22662 | 323,639.143518 | 364,818.829556 | 468,214.012857 | 401,890.289944 | 453,941.962854 | 549,665.045017 | 624,153.090479 | 751,586.726556 | |||||||||||
| S And P Target Date 2060 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2060+ Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 10,000 | 13,322.5848 | 11,504.1151 | 11,435.406291 | 13,011.089065 | 12,916.48718 | 12,945.565741 | 15,640.196519 | 14,592.753183 | 17,759.683068 | 18,728.560515 | 21,385.686085 | 16,075.611598 | 18,157.678514 | 21,986.601801 | 24,966.12362 | 30,063.469063 | ||||
| S And P Target Date 2060 C000167625 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,150,411.51 | 1,301,108.906481 | 1,294,556.574072 | 1,459,275.318224 | 1,872,856.05143 | 1,607,561.159776 | 1,815,767.851414 | 2,198,660.180068 | 2,496,612.361914 | 3,006,346.90622 | |||||||||||
| John Hancock 2060 Lifetime C000167625 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,157,803.32 | $ 1,320,073.113956 | $ 1,331,000.362376 | $ 1,542,852.522275 | $ 1,998,531.006167 | $ 1,696,089.052133 | $ 1,885,988.966073 | $ 2,295,056.295136 | $ 2,615,441.449072 | $ 3,201,967.820476 | |||||||||||
| John Hancock 2065 Lifetime C000221535 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 336,853.85 | 285,877.039381 | 317,884.807551 | 386,833.402433 | 440,834.552404 | 539,693.997529 | |||||||||||||||
| S And P Target Date 2060 C000221535 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 250,000 | 333,064.62 | 285,885.15727 | 322,912.17949 | 391,004.912963 | 443,992.076685 | 534,642.152098 | |||||||||||||||
| John Hancock 2065 Lifetime C000221539 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,347,415.4 | 1,143,508.157523 | 1,271,539.230202 | 1,547,333.609731 | 1,763,338.209616 | 2,158,775.990114 | |||||||||||||||
| S And P Target Date 2060 C000221539 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,332,258.48 | 1,143,540.629081 | 1,291,648.717963 | 1,564,019.651856 | 1,775,968.306744 | 2,138,568.608397 | |||||||||||||||
| John Hancock 2065 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2065 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | $ 10,000 | $ 13,474.154 | $ 11,435.081575 | $ 12,715.392302 | $ 15,473.336097 | $ 17,633.382096 | $ 21,587.759901 | |||||||||||||||
| S And P Target Date 2065 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | S&P Target Date 2065+ Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,527.1433 | 13,903.940884 | |||||||||||||||||||
| John Hancock 2070 Lifetime Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Line Graph and Table Measure Name | John Hancock 2070 Lifetime Index | |||||||||||||||||||||
| Accumulated Value | 10,000 | 11,633.0444 | 14,241.815215 | |||||||||||||||||||
| John Hancock 2070 Lifetime C000259698 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | 1,000,000 | 1,163,304.44 | 1,424,181.521486 | |||||||||||||||||||
| S And P Target Date 2065 C000259698 Index [Member] | ||||||||||||||||||||||
| Account Value [Line Items] | ||||||||||||||||||||||
| Accumulated Value | $ 1,000,000 | $ 1,152,714.33 | $ 1,390,394.088448 | |||||||||||||||||||