Shareholder Report, Holdings (Details)	Apr. 30, 2026
C000112720 \| 87612G101 \| Targa Resources Corporation
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000112720 \| 29273V100 \| Energy Transfer, L.P.
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000112720 \| 23345M107 \| DT Midstream, Inc.
Holdings [Line Items]
Percent of Net Asset Value	9.00%
C000112720 \| 969457100 \| Williams Companies, Inc. (The)
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000112720 \| 293792107 \| Enterprise Products Partners, L.P.
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000112720 \| 16411R208 \| Cheniere Energy, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112720 \| 49456B101 \| Kinder Morgan, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112720 \| 50012A108 \| Kodiak Gas Services, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112720 \| 72651A207 \| Plains GP Holdings, L.P., Class A
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112720 \| 55336V100 \| MPLX, L.P.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112720 \| Energy03676B102
Holdings [Line Items]
Percent of Total Investments	99.40%
C000112720 \| Cash & Equivalent31846V336
Holdings [Line Items]
Percent of Total Investments	0.60%
C000112720 \| Money Market Funds
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000112720 \| Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000112720 \| Energy
Holdings [Line Items]
Percent of Net Asset Value	96.50%
C000124015 \| 87612G101 \| Targa Resources Corporation
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000124015 \| 29273V100 \| Energy Transfer, L.P.
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000124015 \| 23345M107 \| DT Midstream, Inc.
Holdings [Line Items]
Percent of Net Asset Value	9.00%
C000124015 \| 969457100 \| Williams Companies, Inc. (The)
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000124015 \| 293792107 \| Enterprise Products Partners, L.P.
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000124015 \| 16411R208 \| Cheniere Energy, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000124015 \| 49456B101 \| Kinder Morgan, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000124015 \| 50012A108 \| Kodiak Gas Services, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000124015 \| 72651A207 \| Plains GP Holdings, L.P., Class A
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000124015 \| 55336V100 \| MPLX, L.P.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000124015 \| Energy03676B102
Holdings [Line Items]
Percent of Total Investments	99.40%
C000124015 \| Cash & Equivalent31846V336
Holdings [Line Items]
Percent of Total Investments	0.60%
C000124015 \| Money Market Funds
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000124015 \| Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000124015 \| Energy
Holdings [Line Items]
Percent of Net Asset Value	96.50%
C000112721 \| 87612G101 \| Targa Resources Corporation
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000112721 \| 29273V100 \| Energy Transfer, L.P.
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000112721 \| 23345M107 \| DT Midstream, Inc.
Holdings [Line Items]
Percent of Net Asset Value	9.00%
C000112721 \| 969457100 \| Williams Companies, Inc. (The)
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000112721 \| 293792107 \| Enterprise Products Partners, L.P.
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000112721 \| 16411R208 \| Cheniere Energy, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112721 \| 49456B101 \| Kinder Morgan, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112721 \| 50012A108 \| Kodiak Gas Services, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112721 \| 72651A207 \| Plains GP Holdings, L.P., Class A
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112721 \| 55336V100 \| MPLX, L.P.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000112721 \| Energy03676B102
Holdings [Line Items]
Percent of Total Investments	99.40%
C000112721 \| Cash & Equivalent31846V336
Holdings [Line Items]
Percent of Total Investments	0.60%
C000112721 \| Money Market Funds
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000112721 \| Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000112721 \| Energy
Holdings [Line Items]
Percent of Net Asset Value	96.50%
C000203318 \| 87612G101 \| Targa Resources Corporation
Holdings [Line Items]
Percent of Net Asset Value	12.30%
C000203318 \| 29273V100 \| Energy Transfer, L.P.
Holdings [Line Items]
Percent of Net Asset Value	11.30%
C000203318 \| 23345M107 \| DT Midstream, Inc.
Holdings [Line Items]
Percent of Net Asset Value	9.00%
C000203318 \| 969457100 \| Williams Companies, Inc. (The)
Holdings [Line Items]
Percent of Net Asset Value	8.30%
C000203318 \| 293792107 \| Enterprise Products Partners, L.P.
Holdings [Line Items]
Percent of Net Asset Value	8.20%
C000203318 \| 16411R208 \| Cheniere Energy, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000203318 \| 49456B101 \| Kinder Morgan, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000203318 \| 50012A108 \| Kodiak Gas Services, Inc.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000203318 \| 72651A207 \| Plains GP Holdings, L.P., Class A
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000203318 \| 55336V100 \| MPLX, L.P.
Holdings [Line Items]
Percent of Net Asset Value	4.80%
C000203318 \| Energy03676B102
Holdings [Line Items]
Percent of Total Investments	99.40%
C000203318 \| Cash & Equivalent31846V336
Holdings [Line Items]
Percent of Total Investments	0.60%
C000203318 \| Money Market Funds
Holdings [Line Items]
Percent of Net Asset Value	0.60%
C000203318 \| Utilities
Holdings [Line Items]
Percent of Net Asset Value	2.10%
C000203318 \| Energy
Holdings [Line Items]
Percent of Net Asset Value	96.50%

Shareholder Report, Holdings (Details)

Apr. 30, 2026