v3.26.3
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 118 Months Ended 119 Months Ended 120 Months Ended
Aug. 31, 2026
Aug. 31, 2026
Aug. 31, 2026
Aug. 31, 2026
Aug. 31, 2026
C000008885 [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Core Bond Fund (Class NAV/JHCDX)        
Average Annual Return, Percent 1.55% (0.46%)     1.28%
C000073278 [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Mid Value Fund (Class NAV/JMVNX)        
Average Annual Return, Percent 22.00% 12.12%     11.20%
C000095456 [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Capital Appreciation Value Fund (Class NAV/JCAVX)        
Average Annual Return, Percent 10.24% 7.90%     11.05%
C000173477 [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name International Strategic Equity Allocation Fund (Class NAV)        
Average Annual Return, Percent 26.73% 8.42% 8.84%    
C000173478 [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name U.S. Sector Rotation Fund (Class NAV)        
Average Annual Return, Percent 19.75% 12.08%   14.65%  
Bloomberg U S Aggregate Bond Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Bloomberg U.S. Aggregate Bond Index        
Average Annual Return, Percent 1.89% (0.29%)     1.40%
Russell 3000 Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Russell 3000 Index        
Average Annual Return, Percent 20.10% 11.80%     14.84%
Standard & Poor's 500 Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name S&P 500 Index        
Average Annual Return, Percent 20.38% 12.79%   15.51% 15.37%
MSCI ACWI ex USA Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name MSCI ACWI ex USA Index        
Average Annual Return, Percent 27.35% 9.37% 9.83%    
Russell Midcap Value Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name Russell Midcap Value Index        
Average Annual Return, Percent 24.55% 9.56%     10.53%
Forty Bloomberg U S Aggregate Bond Index 60 S And P 500 Index [Member]          
Average Annual Return [Line Items]          
Line Graph and Table Measure Name 40% Bloomberg U.S. Aggregate Bond Index/ 60% S&P 500 Index        
Average Annual Return, Percent 12.82% 7.59%     9.84%