Shareholder Report, Holdings (Details) | Jun. 30, 2024 |
C000064595 | American Tower Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7.80% |
C000064595 | National Grid PLC | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6.90% |
C000064595 | PG&E Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.20% |
C000064595 | Sempra | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064595 | Vinci SA | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064595 | Enbridge, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.80% |
C000064595 | ONEOK, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.70% |
C000064595 | Williams Companies, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.80% |
C000064595 | Pembina Pipeline Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064595 | NiSource, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064595 | Country Other Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064595 | SectorUtilities | |
Holdings [Line Items] | |
Percent of Net Asset Value | 44% |
C000064595 | SectorEnergy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 27% |
C000064595 | SectorIndustrials | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064595 | SectorReal Estate | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064595 | SectorCommunication Services | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4% |
C000064595 | United States | |
Holdings [Line Items] | |
Percent of Net Asset Value | 56% |
C000064595 | Canada | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064595 | Spain | |
Holdings [Line Items] | |
Percent of Net Asset Value | 8% |
C000064595 | United Kingdom | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7% |
C000064595 | France | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6% |
C000064595 | Italy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3% |
C000064595 | China | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064595 | Hong Kong | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064595 | Japan | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064595 | Mexico | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064595 | AssetCommon Stocks | |
Holdings [Line Items] | |
Percent of Net Asset Value | 99% |
C000064595 | AssetMaster Limited Partnerships | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064595 | AssetCash Equivalents | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064595 | Asset Other Net Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064596 | American Tower Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7.80% |
C000064596 | National Grid PLC | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6.90% |
C000064596 | PG&E Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.20% |
C000064596 | Sempra | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064596 | Vinci SA | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064596 | Enbridge, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.80% |
C000064596 | ONEOK, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.70% |
C000064596 | Williams Companies, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.80% |
C000064596 | Pembina Pipeline Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064596 | NiSource, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064596 | Country Other Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064596 | SectorUtilities | |
Holdings [Line Items] | |
Percent of Net Asset Value | 44% |
C000064596 | SectorEnergy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 27% |
C000064596 | SectorIndustrials | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064596 | SectorReal Estate | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064596 | SectorCommunication Services | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4% |
C000064596 | United States | |
Holdings [Line Items] | |
Percent of Net Asset Value | 56% |
C000064596 | Canada | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064596 | Spain | |
Holdings [Line Items] | |
Percent of Net Asset Value | 8% |
C000064596 | United Kingdom | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7% |
C000064596 | France | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6% |
C000064596 | Italy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3% |
C000064596 | China | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064596 | Hong Kong | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064596 | Japan | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064596 | Mexico | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064596 | AssetCommon Stocks | |
Holdings [Line Items] | |
Percent of Net Asset Value | 99% |
C000064596 | AssetMaster Limited Partnerships | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064596 | AssetCash Equivalents | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064596 | Asset Other Net Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000148174 | American Tower Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7.80% |
C000148174 | National Grid PLC | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6.90% |
C000148174 | PG&E Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.20% |
C000148174 | Sempra | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000148174 | Vinci SA | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000148174 | Enbridge, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.80% |
C000148174 | ONEOK, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.70% |
C000148174 | Williams Companies, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.80% |
C000148174 | Pembina Pipeline Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000148174 | NiSource, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000148174 | Country Other Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000148174 | SectorUtilities | |
Holdings [Line Items] | |
Percent of Net Asset Value | 44% |
C000148174 | SectorEnergy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 27% |
C000148174 | SectorIndustrials | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000148174 | SectorReal Estate | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000148174 | SectorCommunication Services | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4% |
C000148174 | United States | |
Holdings [Line Items] | |
Percent of Net Asset Value | 56% |
C000148174 | Canada | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000148174 | Spain | |
Holdings [Line Items] | |
Percent of Net Asset Value | 8% |
C000148174 | United Kingdom | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7% |
C000148174 | France | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6% |
C000148174 | Italy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3% |
C000148174 | China | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000148174 | Hong Kong | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000148174 | Japan | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000148174 | Mexico | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000148174 | AssetCommon Stocks | |
Holdings [Line Items] | |
Percent of Net Asset Value | 99% |
C000148174 | AssetMaster Limited Partnerships | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000148174 | AssetCash Equivalents | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000148174 | Asset Other Net Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064597 | American Tower Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7.80% |
C000064597 | National Grid PLC | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6.90% |
C000064597 | PG&E Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.20% |
C000064597 | Sempra | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064597 | Vinci SA | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064597 | Enbridge, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.80% |
C000064597 | ONEOK, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.70% |
C000064597 | Williams Companies, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.80% |
C000064597 | Pembina Pipeline Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064597 | NiSource, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064597 | Country Other Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064597 | SectorUtilities | |
Holdings [Line Items] | |
Percent of Net Asset Value | 44% |
C000064597 | SectorEnergy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 27% |
C000064597 | SectorIndustrials | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064597 | SectorReal Estate | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064597 | SectorCommunication Services | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4% |
C000064597 | United States | |
Holdings [Line Items] | |
Percent of Net Asset Value | 56% |
C000064597 | Canada | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064597 | Spain | |
Holdings [Line Items] | |
Percent of Net Asset Value | 8% |
C000064597 | United Kingdom | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7% |
C000064597 | France | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6% |
C000064597 | Italy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3% |
C000064597 | China | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064597 | Hong Kong | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064597 | Japan | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064597 | Mexico | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064597 | AssetCommon Stocks | |
Holdings [Line Items] | |
Percent of Net Asset Value | 99% |
C000064597 | AssetMaster Limited Partnerships | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064597 | AssetCash Equivalents | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064597 | Asset Other Net Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064598 | American Tower Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7.80% |
C000064598 | National Grid PLC | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6.90% |
C000064598 | PG&E Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.20% |
C000064598 | Sempra | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064598 | Vinci SA | |
Holdings [Line Items] | |
Percent of Net Asset Value | 5.10% |
C000064598 | Enbridge, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.80% |
C000064598 | ONEOK, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4.70% |
C000064598 | Williams Companies, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.80% |
C000064598 | Pembina Pipeline Corp. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064598 | NiSource, Inc. | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3.50% |
C000064598 | Country Other Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064598 | SectorUtilities | |
Holdings [Line Items] | |
Percent of Net Asset Value | 44% |
C000064598 | SectorEnergy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 27% |
C000064598 | SectorIndustrials | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064598 | SectorReal Estate | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064598 | SectorCommunication Services | |
Holdings [Line Items] | |
Percent of Net Asset Value | 4% |
C000064598 | United States | |
Holdings [Line Items] | |
Percent of Net Asset Value | 56% |
C000064598 | Canada | |
Holdings [Line Items] | |
Percent of Net Asset Value | 12% |
C000064598 | Spain | |
Holdings [Line Items] | |
Percent of Net Asset Value | 8% |
C000064598 | United Kingdom | |
Holdings [Line Items] | |
Percent of Net Asset Value | 7% |
C000064598 | France | |
Holdings [Line Items] | |
Percent of Net Asset Value | 6% |
C000064598 | Italy | |
Holdings [Line Items] | |
Percent of Net Asset Value | 3% |
C000064598 | China | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064598 | Hong Kong | |
Holdings [Line Items] | |
Percent of Net Asset Value | 2% |
C000064598 | Japan | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064598 | Mexico | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064598 | AssetCommon Stocks | |
Holdings [Line Items] | |
Percent of Net Asset Value | 99% |
C000064598 | AssetMaster Limited Partnerships | |
Holdings [Line Items] | |
Percent of Net Asset Value | 1% |
C000064598 | AssetCash Equivalents | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |
C000064598 | Asset Other Net Line | |
Holdings [Line Items] | |
Percent of Net Asset Value | 0% |