v3.25.2
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 109 Months Ended 120 Months Ended
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2025
C000099775        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Class A      
Average Annual Return, Percent (2.50%) 9.33%   1.16%
C000099777        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Class C      
Average Annual Return, Percent 1.57% 9.78%   0.99%
C000172345        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Class R6      
C000099779        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Class S      
C000099774        
Average Annual Return [Line Items]        
Line Graph and Table Measure Name Institutional Class      
Without Sales Load [Member] | C000099775        
Average Annual Return [Line Items]        
Average Annual Return, Percent 3.44% 10.63%   1.76%
Without Sales Load [Member] | C000099777        
Average Annual Return [Line Items]        
Average Annual Return, Percent 2.57% 9.78%   0.99%
Without Sales Load [Member] | C000172345        
Average Annual Return [Line Items]        
Average Annual Return, Percent 3.67% 10.98% 3.27%  
Without Sales Load [Member] | C000099779        
Average Annual Return [Line Items]        
Average Annual Return, Percent 3.55% 10.83%   1.96%
Without Sales Load [Member] | C000099774        
Average Annual Return [Line Items]        
Average Annual Return, Percent 3.50% 10.95%   2.09%
DWS Index: S&P 500® Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 15.16% 16.64%   13.65%
DWS Index: S&P 500® Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 15.16% 16.64%   13.65%
DWS Index: S&P 500® Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 15.16% 16.64% 14.67%  
DWS Index: S&P 500® Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 15.16% 16.64%   13.65%
DWS Index: S&P 500® Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 15.16% 16.64%   13.65%
DWS Index: Bloomberg Commodity Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.77% 12.68%   1.99%
DWS Index: Bloomberg Commodity Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.77% 12.68%   1.99%
DWS Index: Bloomberg Commodity Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.77% 12.68% 4.28%  
DWS Index: Bloomberg Commodity Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.77% 12.68%   1.99%
DWS Index: Bloomberg Commodity Index        
Average Annual Return [Line Items]        
Average Annual Return, Percent 5.77% 12.68%   1.99%