v3.26.1
Shareholder Report, Holdings (Details)
Mar. 31, 2026
C000174122 | Samsung Electronics9254585  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000174122 | Taiwan Semiconductor Manufacturing9254625  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000174122 | Tencent Holdings9254551  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000174122 | Alibaba Group Holding9254523  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000174122 | Kia9254582  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000174122 | Petroleo Brasileiro - Petrobras9254441  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000174122 | BYD9254525  
Holdings [Line Items]  
Percent of Total Investments 3.10%
C000174122 | Vale9254449  
Holdings [Line Items]  
Percent of Total Investments 3.10%
C000174122 | Contemporary Amperex Technology9254489  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000174122 | Sociedad Quimica y Minera de Chile9254443  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000174122 | Greece  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000174122 | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000174122 | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000174122 | Vietnam  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000174122 | Turkey  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000174122 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000174122 | India  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000174122 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000174122 | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000174122 | South Korea  
Holdings [Line Items]  
Percent of Net Asset Value 11.90%
C000174122 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000174122 | China  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
C000174121 | Samsung Electronics9254585  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000174121 | Taiwan Semiconductor Manufacturing9254625  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000174121 | Tencent Holdings9254551  
Holdings [Line Items]  
Percent of Total Investments 3.50%
C000174121 | Alibaba Group Holding9254523  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000174121 | Kia9254582  
Holdings [Line Items]  
Percent of Total Investments 3.40%
C000174121 | Petroleo Brasileiro - Petrobras9254441  
Holdings [Line Items]  
Percent of Total Investments 3.30%
C000174121 | BYD9254525  
Holdings [Line Items]  
Percent of Total Investments 3.10%
C000174121 | Vale9254449  
Holdings [Line Items]  
Percent of Total Investments 3.10%
C000174121 | Contemporary Amperex Technology9254489  
Holdings [Line Items]  
Percent of Total Investments 2.90%
C000174121 | Sociedad Quimica y Minera de Chile9254443  
Holdings [Line Items]  
Percent of Total Investments 2.50%
C000174121 | Greece  
Holdings [Line Items]  
Percent of Net Asset Value 1.80%
C000174121 | Zambia  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000174121 | Chile  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000174121 | Vietnam  
Holdings [Line Items]  
Percent of Net Asset Value 2.60%
C000174121 | Turkey  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000174121 | Mexico  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000174121 | India  
Holdings [Line Items]  
Percent of Net Asset Value 6.80%
C000174121 | South Africa  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000174121 | Taiwan  
Holdings [Line Items]  
Percent of Net Asset Value 9.80%
C000174121 | South Korea  
Holdings [Line Items]  
Percent of Net Asset Value 11.90%
C000174121 | Brazil  
Holdings [Line Items]  
Percent of Net Asset Value 13.70%
C000174121 | China  
Holdings [Line Items]  
Percent of Net Asset Value 25.00%
C000253898 | EDP Renovaveis SA9254402  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000253898 | Clearway Energy Inc9254320  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000253898 | NextEra Energy Inc9254331  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000253898 | BKW AG9254367  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000253898 | Dominion Energy Inc9254326  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000253898 | ReNew Energy Global PLC9254340  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000253898 | ERG SPA9254395  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000253898 | Enel SPA9254394  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000253898 | Exelon Corp9254329  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000253898 | Algonquin Power & Utilities9254312  
Holdings [Line Items]  
Percent of Total Investments 3.80%
C000253898 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000253898 | China  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000253898 | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000253898 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000253898 | France  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000253898 | Singapore  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253898 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000253898 | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000253898 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
C000253898 | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
C000253898 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000253898 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 33.00%
C000253897 | EDP Renovaveis SA9254402  
Holdings [Line Items]  
Percent of Total Investments 6.20%
C000253897 | Clearway Energy Inc9254320  
Holdings [Line Items]  
Percent of Total Investments 5.30%
C000253897 | NextEra Energy Inc9254331  
Holdings [Line Items]  
Percent of Total Investments 5.20%
C000253897 | BKW AG9254367  
Holdings [Line Items]  
Percent of Total Investments 4.80%
C000253897 | Dominion Energy Inc9254326  
Holdings [Line Items]  
Percent of Total Investments 4.70%
C000253897 | ReNew Energy Global PLC9254340  
Holdings [Line Items]  
Percent of Total Investments 4.20%
C000253897 | ERG SPA9254395  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000253897 | Enel SPA9254394  
Holdings [Line Items]  
Percent of Total Investments 4.10%
C000253897 | Exelon Corp9254329  
Holdings [Line Items]  
Percent of Total Investments 4.00%
C000253897 | Algonquin Power & Utilities9254312  
Holdings [Line Items]  
Percent of Total Investments 3.80%
C000253897 | India  
Holdings [Line Items]  
Percent of Net Asset Value 4.20%
C000253897 | China  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000253897 | Belgium  
Holdings [Line Items]  
Percent of Net Asset Value 2.00%
C000253897 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 2.50%
C000253897 | France  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000253897 | Singapore  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000253897 | Switzerland  
Holdings [Line Items]  
Percent of Net Asset Value 4.80%
C000253897 | Italy  
Holdings [Line Items]  
Percent of Net Asset Value 8.20%
C000253897 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 8.30%
C000253897 | Spain  
Holdings [Line Items]  
Percent of Net Asset Value 9.90%
C000253897 | Canada  
Holdings [Line Items]  
Percent of Net Asset Value 10.20%
C000253897 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 33.00%