v3.25.1
Shareholder Report, Average Annual Return (Details)
 12 Months Ended 14 Months Ended
Mar. 31, 2025
Mar. 31, 2025
C000247858    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name KraneShares 90% KWEB Defined Outcome January 2027 ETF  
C000247859    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name KraneShares 100% KWEB Defined Outcome January 2027 ETF  
Without Sales Load [Member] | C000247858    
Average Annual Return [Line Items]    
Average Annual Return, Percent 21.38% 21.03%
Without Sales Load [Member] | C000247859    
Average Annual Return [Line Items]    
Average Annual Return, Percent 14.92% 13.74%
MSCI China All Shares Index (Net) (USD)    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name MSCI China All Shares Index (Net) (USD)  
Average Annual Return, Percent 28.47% 29.70%
MSCI China All Shares Index (Net) (USD)    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name MSCI China All Shares Index (Net) (USD)  
Average Annual Return, Percent 28.47% 29.70%
CSI Overseas China Internet Index    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name CSI Overseas China Internet Index  
Average Annual Return, Percent 36.11% 39.18%
CSI Overseas China Internet Index    
Average Annual Return [Line Items]    
Line Graph and Table Measure Name CSI Overseas China Internet Index  
Average Annual Return, Percent 36.11% 39.18%