v3.25.2
Shareholder Report, Holdings (Details)
May 31, 2025
C000219203 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219203 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219203 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219203 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219203 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000219205 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219205 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219205 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219205 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219205 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000219200 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219200 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219200 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219200 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219200 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000219201 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219201 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219201 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219201 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219201 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000219204 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219204 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219204 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219204 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219204 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000219206 | Clean Power  
Holdings [Line Items]  
Percent of Net Asset Value 79.80%
C000219206 | Solar Tech  
Holdings [Line Items]  
Percent of Net Asset Value 9.70%
C000219206 | Bioenergy  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000219206 | Wind Tech  
Holdings [Line Items]  
Percent of Net Asset Value 3.50%
C000219206 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 0.10%
C000193455 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193455 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193455 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193455 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193455 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193455 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193455 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193455 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000193456 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193456 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193456 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193456 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193456 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193456 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193456 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193456 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000201753 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000201753 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000201753 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000201753 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000201753 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000201753 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000201753 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000201753 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000193459 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193459 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193459 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193459 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193459 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193459 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193459 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193459 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000193460 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193460 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193460 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193460 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193460 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193460 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193460 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193460 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000193457 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193457 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193457 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193457 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193457 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193457 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193457 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193457 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000193458 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 1.50%
C000193458 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 33.40%
C000193458 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.10%
C000193458 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 16.80%
C000193458 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 12.80%
C000193458 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000193458 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000193458 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 1.10%
C000124917 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000124917 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000124917 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000124917 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124917 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000124917 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000124917 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124917 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124917 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000124918 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000124918 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000124918 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000124918 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124918 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000124918 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000124918 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124918 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124918 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000201752 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000201752 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000201752 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000201752 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000201752 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000201752 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000201752 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000201752 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000201752 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000124921 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000124921 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000124921 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000124921 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124921 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000124921 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000124921 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124921 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124921 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000199576 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000199576 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000199576 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000199576 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000199576 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000199576 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000199576 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000199576 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000199576 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000124919 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000124919 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000124919 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000124919 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124919 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000124919 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000124919 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124919 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124919 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%
C000124920 | Other  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000124920 | Gathering + Processing  
Holdings [Line Items]  
Percent of Net Asset Value 39.40%
C000124920 | Natural Gas  
Holdings [Line Items]  
Percent of Net Asset Value 29.70%
C000124920 | Petroleum  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124920 | Liquefaction  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000124920 | Midstream  
Holdings [Line Items]  
Percent of Net Asset Value 3.00%
C000124920 | Upstream  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000124920 | Wholesale  
Holdings [Line Items]  
Percent of Net Asset Value 9.60%
C000124920 | Retail  
Holdings [Line Items]  
Percent of Net Asset Value 1.30%