v3.25.2
Shareholder Report, Holdings (Details)
Jun. 30, 2025
C000090373 | Equinix  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000090373 | BHP Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000090373 | Welltower  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000090373 | Prologis  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000090373 | Freeport-McMoRan  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000090373 | American Tower  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000090373 | Agnico Eagle Mines  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000090373 | Rio Tinto  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000090373 | Franco-Nevada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000090373 | Public Storage  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000090373 | Gold  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
C000090373 | Diversified Metals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000090373 | Industrial Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000090373 | Integrated Oil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000090373 | Steel  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000090373 | Oil & Gas Exploration & Production  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000090373 | Multi-Family Residential Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000090373 | Retail Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000090373 | Health Care Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000090373 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 42.00%
C000159678 | Equinix  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000159678 | BHP Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000159678 | Welltower  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000159678 | Prologis  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000159678 | Freeport-McMoRan  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000159678 | American Tower  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000159678 | Agnico Eagle Mines  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000159678 | Rio Tinto  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000159678 | Franco-Nevada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000159678 | Public Storage  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000159678 | Gold  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
C000159678 | Diversified Metals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000159678 | Industrial Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000159678 | Integrated Oil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000159678 | Steel  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000159678 | Oil & Gas Exploration & Production  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000159678 | Multi-Family Residential Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000159678 | Retail Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000159678 | Health Care Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000159678 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 42.00%
C000219347 | Equinix  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000219347 | BHP Group  
Holdings [Line Items]  
Percent of Net Asset Value 2.70%
C000219347 | Welltower  
Holdings [Line Items]  
Percent of Net Asset Value 2.40%
C000219347 | Prologis  
Holdings [Line Items]  
Percent of Net Asset Value 2.10%
C000219347 | Freeport-McMoRan  
Holdings [Line Items]  
Percent of Net Asset Value 1.90%
C000219347 | American Tower  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000219347 | Agnico Eagle Mines  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000219347 | Rio Tinto  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000219347 | Franco-Nevada  
Holdings [Line Items]  
Percent of Net Asset Value 1.70%
C000219347 | Public Storage  
Holdings [Line Items]  
Percent of Net Asset Value 1.60%
C000219347 | Gold  
Holdings [Line Items]  
Percent of Net Asset Value 14.30%
C000219347 | Diversified Metals & Mining  
Holdings [Line Items]  
Percent of Net Asset Value 9.00%
C000219347 | Industrial Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000219347 | Integrated Oil & Gas  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000219347 | Steel  
Holdings [Line Items]  
Percent of Net Asset Value 5.40%
C000219347 | Oil & Gas Exploration & Production  
Holdings [Line Items]  
Percent of Net Asset Value 5.30%
C000219347 | Multi-Family Residential Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000219347 | Retail Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.10%
C000219347 | Health Care Real Estate Investment Trusts  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000219347 | Other Holdings Grouping  
Holdings [Line Items]  
Percent of Net Asset Value 42.00%