v3.26.1
Shareholder Report, Average Annual Return (Details)
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C000129136                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares CSI China Internet ETF                                          
C000129571                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Bosera MSCI China A 50 Connect Index ETF                                          
C000180685                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares MSCI One Belt One Road Index ETF                                          
C000176655                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Emerging Markets Consumer Technology Index ETF                                          
C000157444                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares MSCI China Clean Technology Index ETF                                          
C000198139                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Electric Vehicles and Future Mobility Index ETF                                          
C000195635                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares MSCI All China Health Care Index ETF                                          
C000195632                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Asia Pacific High Income USD Bond ETF                                          
C000210156                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares MSCI Emerging Markets ex China Index ETF                                          
C000214065                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Global Carbon Strategy ETF                                          
C000222186                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Value Line<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Dynamic Dividend Equity Index ETF                                          
C000223083                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Mount Lucas Managed Futures Index Strategy ETF                                          
C000220718                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares SSE STAR Market 50 Index ETF                                          
C000223017                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Hang Seng TECH Index ETF                                          
C000229247                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares California Carbon Allowance Strategy ETF                                          
C000240471                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares KWEB Covered Call Strategy ETF                                          
C000249202                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Hedgeye Hedged Equity Index ETF                                          
C000250789                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Artificial Intelligence and Technology ETF                                          
C000251229                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Sustainable Ultra Short Duration Index ETF                                          
C000249978                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares China Alpha Index ETF                                          
C000254137                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name KraneShares Man Buyout Beta Index ETF                                          
Without Sales Load [Member] | C000129136                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent (15.27%)                 (15.07%)                       (0.13%)
Without Sales Load [Member] | C000129571                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 27.37%                 (0.58%)                       4.68%
Without Sales Load [Member] | C000180685                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 27.53%                 2.15%                     4.07%  
Without Sales Load [Member] | C000176655                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 25.77%                 (6.11%)                   (0.31%)    
Without Sales Load [Member] | C000157444                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 10.87%                 (6.02%)                 2.96%      
Without Sales Load [Member] | C000198139                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 48.24%                 (3.95%)               4.45%        
Without Sales Load [Member] | C000195635                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 12.90%                 (11.69%)             (2.28%)          
Without Sales Load [Member] | C000195632                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 6.30%                 (0.42%)           1.47%            
Without Sales Load [Member] | C000210156                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 43.97%                 8.26%         9.86%              
Without Sales Load [Member] | C000214065                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 6.82%                 8.70%       14.49%                
Without Sales Load [Member] | C000222186                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 9.31%                 9.07%     11.40%                  
Without Sales Load [Member] | C000223083                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 8.02%                 5.46%   7.05%                    
Without Sales Load [Member] | C000220718                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 28.85%                 (3.29%) (6.33%)                      
Without Sales Load [Member] | C000223017                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent (14.71%)               (11.40%)                          
Without Sales Load [Member] | C000229247                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent (8.84%)             (4.54%)                            
Without Sales Load [Member] | C000240471                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent (0.27%)           6.22%                              
Without Sales Load [Member] | C000249202                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 14.92%         10.31%                                
Without Sales Load [Member] | C000250789                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 33.06%       17.39%                                  
Without Sales Load [Member] | C000251229                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 4.16%     4.52%                                    
Without Sales Load [Member] | C000249978                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 57.43%   42.01%                                      
Without Sales Load [Member] | C000254137                                            
Average Annual Return [Line Items]                                            
Average Annual Return, Percent 21.78% 7.06%                                        
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [1] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%                 (3.47%)                       4.49%
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [2] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%                 (3.47%)                       4.49%
MSCI ACWI Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [3],[4] MSCI ACWI Index (USD) (NR)                                          
Average Annual Return, Percent 20.01%                 9.49%                     10.53%  
MSCI Emerging Markets Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [5] MSCI Emerging Markets Index (USD) (NR)                                          
Average Annual Return, Percent 29.55%                 3.69%                   5.11%    
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [6] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%                 (3.47%)                 1.16%      
MSCI ACWI Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [7],[8] MSCI ACWI Index (USD) (NR)                                          
Average Annual Return, Percent 20.01%                 9.49%               9.44%        
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [9] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%                 (3.47%)             (0.34%)          
JP Morgan Asia Credit Index (JACI) (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [10] JP Morgan Asia Credit Index (JACI) (USD) (TR)                                          
Average Annual Return, Percent 5.31%                 1.37%           3.16%            
MSCI Emerging Markets Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [11] MSCI Emerging Markets Index (USD) (NR)                                          
Average Annual Return, Percent 29.55%                 3.69%         6.19%              
S&P 500 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [12] S&P 500 Index (USD) (TR)                                          
Average Annual Return, Percent 17.80%                 12.06%       14.71%                
S&P 500 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [13] S&P 500 Index (USD) (TR)                                          
Average Annual Return, Percent 17.80%                 12.06%     13.54%                  
Bloomberg Global Aggregate Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [14] Bloomberg Global Aggregate Index (USD) (TR)                                          
Average Annual Return, Percent 4.26%                 (1.46%)   (1.95%)                    
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [15] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%                 (3.47%) (5.51%)                      
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [16] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%               (4.27%)                          
S&P 500 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [17] S&P 500 Index (USD) (TR)                                          
Average Annual Return, Percent 17.80%             11.36%                            
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [18] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%           4.18%                              
S&P 500 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [19] S&P 500 Index (USD) (TR)                                          
Average Annual Return, Percent 17.80%         10.45%                                
S&P 500 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [20] S&P 500 Index (USD) (TR)                                          
Average Annual Return, Percent 17.80%       10.98%                                  
Bloomberg U.S. Aggregate Bond Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [21] Bloomberg U.S. Aggregate Bond Index (USD) (TR)                                          
Average Annual Return, Percent 4.35%     4.78%                                    
MSCI China All Shares Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [22] MSCI China All Shares Index (USD) (NR)                                          
Average Annual Return, Percent 10.36%   23.18%                                      
Russell 3000 Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [23] Russell 3000 Index (USD) (TR)                                          
Average Annual Return, Percent 18.09% 11.04%                                        
CSI Overseas China Internet Index (USD) (PR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [24] CSI Overseas China Internet Index (USD) (PR)                                          
Average Annual Return, Percent (15.65%)                 (15.12%)                       (0.10%)
Custom Blended KBA Index                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [25] Custom Blended KBA Index                                          
Average Annual Return, Percent 29.34%                 0.30%                       5.07%
MSCI Global China Infrastructure Exposure Index (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [4] MSCI Global China Infrastructure Exposure Index (NR)                                          
Average Annual Return, Percent 29.28%                 2.88%                     5.17%  
Solactive Emerging Markets Consumer Technology Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [26] Solactive Emerging Markets Consumer Technology Index (USD) (TR)                                          
Average Annual Return, Percent 26.32%                 (5.51%)                   0.56%    
MSCI China IMI Environment 10/40 Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [6],[27] MSCI China IMI Environment 10/40 Index (USD) (NR)                                          
Average Annual Return, Percent 11.96%                 (6.32%)                 2.42%      
Custom Blended KARS Index                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [28] Custom Blended KARS Index                                          
Average Annual Return, Percent 48.46%                 (3.18%)               5.02%        
MSCI China All Shares Healthcare 10/40 Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [9] MSCI China All Shares Healthcare 10/40 Index (USD) (NR)                                          
Average Annual Return, Percent 13.67%                 (11.03%)             (1.56%)          
Custom Blended KHYB Index                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [29] Custom Blended KHYB Index                                          
Average Annual Return, Percent 6.49%                 (1.03%)           1.55%            
MSCI Emerging Markets ex China Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [11],[30] MSCI Emerging Markets ex China Index (USD) (NR)                                          
Average Annual Return, Percent 41.30%                 8.07%         9.08%              
S&P Global Carbon Credit Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [12] S&P Global Carbon Credit Index (USD) (TR)                                          
Average Annual Return, Percent 8.23%                 10.05%       15.69%                
Value Line® Dynamic Dividend Equity Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [31] Value Line<sup style="inset: 1.5px 0px 4px; box-sizing: border-box; color: rgb(0, 0, 0); display: inline; flex-wrap: nowrap; font-size: 12px; font-weight: 700; grid-area: auto; line-height: 0px; margin: 0px; overflow: visible; position: relative; text-align: center; text-align-last: auto; white-space-collapse: preserve-breaks;">®</sup> Dynamic Dividend Equity Index (USD) (NR)                                          
Average Annual Return, Percent 9.07%                 8.76%     11.07%                  
KFA MLM Index (USD) (PR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [32] KFA MLM Index (USD) (PR)                                          
Average Annual Return, Percent 9.26%                 7.48%   9.01%                    
SSE Science and Technology Innovation Board 50 Index (USD, TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [33] SSE Science and Technology Innovation Board 50 Index (USD, TR)                                          
Average Annual Return, Percent 29.50%                 (0.40%) (3.83%)                      
Hang Seng TECH Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [16] Hang Seng TECH Index (USD) (NR)                                          
Average Annual Return, Percent (13.61%)               (10.13%)                          
S&P Carbon Credit CCA Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [17] S&P Carbon Credit CCA Index (USD) (TR)                                          
Average Annual Return, Percent (8.64%)             (3.44%)                            
CSI Overseas China Internet Index (USD) (PR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [34] CSI Overseas China Internet Index (USD) (PR)                                          
Average Annual Return, Percent (15.65%)           (3.58%)                              
Hedgeye Hedged Equity Index (USD) (PR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [35] Hedgeye Hedged Equity Index (USD) (PR)                                          
Average Annual Return, Percent 16.83%         12.01%                                
Solactive Etna Artificial General Intelligence Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [36] Solactive Etna Artificial General Intelligence Index (USD) (NR)                                          
Average Annual Return, Percent 26.69%       13.02%                                  
Solactive ISS Sustainable Select 0-1 Year USD Corporate IG Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [21] Solactive ISS Sustainable Select 0-1 Year USD Corporate IG Index (USD) (TR)                                          
Average Annual Return, Percent 4.21%     4.60%                                    
Qi China Alpha Index (USD) (NR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [22] Qi China Alpha Index (USD) (NR)                                          
Average Annual Return, Percent 60.09%   44.14%                                      
Man Buyout Beta Index (USD) (TR)                                            
Average Annual Return [Line Items]                                            
Line Graph and Table Measure Name [23] Man Buyout Beta Index (USD) (TR)                                          
Average Annual Return, Percent 22.95% 8.10%                                        
[1] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[2] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[3] ACWI – All Country World Index
[4] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[5] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[6] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[7] ACWI – All Country World Index
[8] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[9] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[10] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[11] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[12] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[13] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[14] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[15] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[16] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[17] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[18] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[19] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[20] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[21] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[22] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[23] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[24] Price Return (PR) - Reflects no deductions for fees, expenses or taxes.
[25] Custom Blended KBA Index consists of: MSCI China A Index (inception to October 23, 2014), MSCI China A International Index (October 23, 2024 to December 26, 2017), MSCI China A Inclusion Index (December 27, 2017 to May 29, 2019), MSCI China A Index (May 29, 2019 to January 5. 2022), and MSCI China A 50 Connect Index (January 6, 2022 to present).
[26] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[27] IMI - Investable Market Index
[28] Custom Blended KARS Index consists of: Solactive Electric Vehicles and Future Mobility Index (Inception to June 15, 2021) and Bloomberg Electric Vehicles Total Return Index (June 16, 2021 to present).
[29] Custom Blended KHYB Index consist of: Solactive USD China Corporate High Yield Bond Index (Inception to July 31, 2021) and JP Morgan Asia Credit Index (JACI) Non-Investment Grade Corporate Index (August 1, 2021 to present.)
[30] The Fund's inception date predates the MSCI Emerging Markets ex China Index's inception date of March 9, 2017. Accordingly, the MSCI Emerging Markets ex China Index does not have 10 calendar years of performance and the table instead reflects the MSCI Emerging Markets ex China Index's performance for 1 year, five years, and from its inception on March 9, 2017.
[31] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).
[32] Price Return (PR) - Reflects no deductions for fees, expenses or taxes.
[33] Total Return (TR) - Reflects no deductions for fees, expenses or taxes.
[34] Price Return (PR) - Reflects no deductions for fees, expenses or taxes.
[35] Price Return (PR) - Reflects no deductions for fees, expenses or taxes.
[36] Net Return (NR) - Reflects no deductions for fees, expenses or taxes (except foreign withholding taxes).