v3.26.3
Shareholder Report, Holdings (Details)
Jul. 31, 2026
C000021867 | Welltower, Inc.FR_95040Q104  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000021867 | Prologis, Inc.FR_74340W103  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000021867 | Equinix, Inc.FR_29444U700  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021867 | CubeSmartFR_229663109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021867 | Simon Property Group, Inc.FR_828806109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021867 | Digital Realty Trust, Inc.FR_253868103  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000021867 | AvalonBay Communities, Inc.FR_053484101  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000021867 | Highwoods Properties, Inc.FR_431284108  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000021867 | Essex Property Trust, Inc.FR_297178105  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021867 | Brixmor Property Group, Inc.FR_11120U105  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000021867 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
C000021867 | Sector Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000021867 | SectorOffice REITs  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021867 | SectorDiversified REITs  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000021867 | SectorResidential REITs  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000021867 | SectorReal Estate Management & Development  
Holdings [Line Items]  
Percent of Net Asset Value 11.20%
C000021867 | SectorHealth Care REITs  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000021867 | SectorIndustrial REITs  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000021867 | SectorRetail REITs  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000021867 | SectorSpecialized REITs  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
C000021867 | Hong Kong  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021867 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000021867 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000021867 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000021867 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 68.10%
C000021869 | Welltower, Inc.FR_95040Q104  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000021869 | Prologis, Inc.FR_74340W103  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000021869 | Equinix, Inc.FR_29444U700  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021869 | CubeSmartFR_229663109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021869 | Simon Property Group, Inc.FR_828806109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021869 | Digital Realty Trust, Inc.FR_253868103  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000021869 | AvalonBay Communities, Inc.FR_053484101  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000021869 | Highwoods Properties, Inc.FR_431284108  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000021869 | Essex Property Trust, Inc.FR_297178105  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021869 | Brixmor Property Group, Inc.FR_11120U105  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000021869 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
C000021869 | Sector Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000021869 | SectorOffice REITs  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021869 | SectorDiversified REITs  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000021869 | SectorResidential REITs  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000021869 | SectorReal Estate Management & Development  
Holdings [Line Items]  
Percent of Net Asset Value 11.20%
C000021869 | SectorHealth Care REITs  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000021869 | SectorIndustrial REITs  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000021869 | SectorRetail REITs  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000021869 | SectorSpecialized REITs  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
C000021869 | Hong Kong  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021869 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000021869 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000021869 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000021869 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 68.10%
C000128774 | Welltower, Inc.FR_95040Q104  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000128774 | Prologis, Inc.FR_74340W103  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000128774 | Equinix, Inc.FR_29444U700  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000128774 | CubeSmartFR_229663109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000128774 | Simon Property Group, Inc.FR_828806109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000128774 | Digital Realty Trust, Inc.FR_253868103  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000128774 | AvalonBay Communities, Inc.FR_053484101  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000128774 | Highwoods Properties, Inc.FR_431284108  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000128774 | Essex Property Trust, Inc.FR_297178105  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000128774 | Brixmor Property Group, Inc.FR_11120U105  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000128774 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
C000128774 | Sector Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000128774 | SectorOffice REITs  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000128774 | SectorDiversified REITs  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000128774 | SectorResidential REITs  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000128774 | SectorReal Estate Management & Development  
Holdings [Line Items]  
Percent of Net Asset Value 11.20%
C000128774 | SectorHealth Care REITs  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000128774 | SectorIndustrial REITs  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000128774 | SectorRetail REITs  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000128774 | SectorSpecialized REITs  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
C000128774 | Hong Kong  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000128774 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000128774 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000128774 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000128774 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 68.10%
C000021870 | Welltower, Inc.FR_95040Q104  
Holdings [Line Items]  
Percent of Net Asset Value 11.60%
C000021870 | Prologis, Inc.FR_74340W103  
Holdings [Line Items]  
Percent of Net Asset Value 6.40%
C000021870 | Equinix, Inc.FR_29444U700  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021870 | CubeSmartFR_229663109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021870 | Simon Property Group, Inc.FR_828806109  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000021870 | Digital Realty Trust, Inc.FR_253868103  
Holdings [Line Items]  
Percent of Net Asset Value 3.90%
C000021870 | AvalonBay Communities, Inc.FR_053484101  
Holdings [Line Items]  
Percent of Net Asset Value 3.70%
C000021870 | Highwoods Properties, Inc.FR_431284108  
Holdings [Line Items]  
Percent of Net Asset Value 3.40%
C000021870 | Essex Property Trust, Inc.FR_297178105  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021870 | Brixmor Property Group, Inc.FR_11120U105  
Holdings [Line Items]  
Percent of Net Asset Value 3.10%
C000021870 | Other Line  
Holdings [Line Items]  
Percent of Net Asset Value 10.80%
C000021870 | Sector Other Net Line  
Holdings [Line Items]  
Percent of Net Asset Value 1.20%
C000021870 | SectorOffice REITs  
Holdings [Line Items]  
Percent of Net Asset Value 5.10%
C000021870 | SectorDiversified REITs  
Holdings [Line Items]  
Percent of Net Asset Value 7.80%
C000021870 | SectorResidential REITs  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000021870 | SectorReal Estate Management & Development  
Holdings [Line Items]  
Percent of Net Asset Value 11.20%
C000021870 | SectorHealth Care REITs  
Holdings [Line Items]  
Percent of Net Asset Value 12.30%
C000021870 | SectorIndustrial REITs  
Holdings [Line Items]  
Percent of Net Asset Value 13.80%
C000021870 | SectorRetail REITs  
Holdings [Line Items]  
Percent of Net Asset Value 18.20%
C000021870 | SectorSpecialized REITs  
Holdings [Line Items]  
Percent of Net Asset Value 20.40%
C000021870 | Hong Kong  
Holdings [Line Items]  
Percent of Net Asset Value 3.30%
C000021870 | United Kingdom  
Holdings [Line Items]  
Percent of Net Asset Value 3.80%
C000021870 | Australia  
Holdings [Line Items]  
Percent of Net Asset Value 6.30%
C000021870 | Japan  
Holdings [Line Items]  
Percent of Net Asset Value 7.70%
C000021870 | United States  
Holdings [Line Items]  
Percent of Net Asset Value 68.10%