v3.26.3
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 60 Months Ended 120 Months Ended
Jul. 31, 2026
Jul. 31, 2026
Jul. 31, 2026
C000202324      
Average Annual Return [Line Items]      
Average Annual Return, Percent (1.13%) 2.26% 2.82%
C000202325      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.30% 2.32% 2.62%
Without Sales Load [Member] | C000202326      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.25% 3.34% 3.49%
Without Sales Load [Member] | C000202324      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.99% 3.10% 3.24%
Without Sales Load [Member] | C000202325      
Average Annual Return [Line Items]      
Average Annual Return, Percent 2.27% 2.32% 2.62%
Without Sales Load [Member] | C000202327      
Average Annual Return [Line Items]      
Average Annual Return, Percent 3.33% 3.42% 3.58%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.60% (1.91%) 0.25%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.60% (1.91%) 0.25%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.60% (1.91%) 0.25%
Bloomberg Global Aggregate Bond Index      
Average Annual Return [Line Items]      
Average Annual Return, Percent 1.60% (1.91%) 0.25%
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 3.82% 3.59% 2.37%
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 3.82% 3.59% 2.37%
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 3.82% 3.59% 2.37%
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 3.82% 3.59% 2.37%