v3.25.2
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jul. 31, 2025
Jul. 31, 2025
Jul. 31, 2025
C000202324      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.58% 3.35% 2.40%
C000202325      
Average Annual Return [Line Items]      
Average Annual Return, Percent 6.03% 3.40% 2.19%
Without Sales Load [Member] | C000202326      
Average Annual Return [Line Items]      
Average Annual Return, Percent 8.06% 4.45% 3.08%
Without Sales Load [Member] | C000202324      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.90% 4.20% 2.82%
Without Sales Load [Member] | C000202325      
Average Annual Return [Line Items]      
Average Annual Return, Percent 7.03% 3.40% 2.19%
Without Sales Load [Member] | C000202327      
Average Annual Return [Line Items]      
Average Annual Return, Percent 8.29% 4.54% 3.16%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.40% (2.07%) 1.00%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.40% (2.07%) 1.00%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.40% (2.07%) 1.00%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 4.40% (2.07%) 1.00%
ICE BofA 3-Month U.S. Treasury Bill Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA 3-Month U.S. Treasury Bill Index    
Average Annual Return, Percent 4.57% 2.83% 2.01%
ICE BofA 3-Month U.S. Treasury Bill Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA 3-Month U.S. Treasury Bill Index    
Average Annual Return, Percent 4.57% 2.83% 2.01%
ICE BofA 3-Month U.S. Treasury Bill Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA 3-Month U.S. Treasury Bill Index    
Average Annual Return, Percent 4.57% 2.83% 2.01%
ICE BofA 3-Month U.S. Treasury Bill Index      
Average Annual Return [Line Items]      
Line Graph and Table Measure Name ICE BofA 3-Month U.S. Treasury Bill Index    
Average Annual Return, Percent 4.57% 2.83% 2.01%