v3.26.1
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jan. 31, 2026
Jan. 31, 2026
Jan. 31, 2026
C000016770      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Class A    
Average Annual Return, Percent 3.85% (0.78%) 1.88%
C000016773      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Class C    
Average Annual Return, Percent 4.99% (0.97%) 1.41%
C000016774      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Class S    
C000016775      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name Institutional Class    
Without Sales Load [Member] | C000016770      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.78% (0.23%) 2.16%
Without Sales Load [Member] | C000016773      
Average Annual Return [Line Items]      
Average Annual Return, Percent 5.99% (0.97%) 1.41%
Without Sales Load [Member] | C000016774      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.06% 0.02% 2.42%
Without Sales Load [Member] | C000016775      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.98% 0.01% 2.43%
DWS Index: Bloomberg U.S. Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.85% (0.20%) 1.88%
DWS Index: Bloomberg U.S. Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.85% (0.20%) 1.88%
DWS Index: Bloomberg U.S. Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.85% (0.20%) 1.88%
DWS Index: Bloomberg U.S. Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.85% (0.20%) 1.88%