v3.26.3
Shareholder Report, Holdings (Details)
Jul. 31, 2026
C000008009 [Member] | Oceania [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 2.80%
C000008009 [Member] | Asia [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 17.60%
C000008009 [Member] | Europe [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 40.40%
C000008009 [Member] | Africa [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 4.00%
C000008009 [Member] | North America [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 28.90%
C000008009 [Member] | South America [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000008009 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000032424 [Member] | Data Center REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000032424 [Member] | Health Care REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000032424 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000032424 [Member] | Multi Family Residential REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000032424 [Member] | Other Specialized REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000032424 [Member] | Real Estate Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000032424 [Member] | Retail REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.60%
C000032424 [Member] | Self Storage REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000032424 [Member] | Telecom Tower REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000032424 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000032424 [Member] | Vanguard Real Estate II Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50% [1]
C000008010 [Member] | Data Center REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000008010 [Member] | Health Care REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000008010 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000008010 [Member] | Multi Family Residential REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000008010 [Member] | Other Specialized REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000008010 [Member] | Real Estate Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008010 [Member] | Retail REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.60%
C000008010 [Member] | Self Storage REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008010 [Member] | Telecom Tower REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000008010 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000008010 [Member] | Vanguard Real Estate II Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50% [2]
C000008012 [Member] | Data Center REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000008012 [Member] | Health Care REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000008012 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000008012 [Member] | Multi Family Residential REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000008012 [Member] | Other Specialized REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000008012 [Member] | Real Estate Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008012 [Member] | Retail REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.60%
C000008012 [Member] | Self Storage REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008012 [Member] | Telecom Tower REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000008012 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000008012 [Member] | Vanguard Real Estate II Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50% [3]
C000008011 [Member] | Data Center REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 8.60%
C000008011 [Member] | Health Care REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 15.00%
C000008011 [Member] | Industrial REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 10.00%
C000008011 [Member] | Multi Family Residential REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.70%
C000008011 [Member] | Other Specialized REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.60%
C000008011 [Member] | Real Estate Services [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008011 [Member] | Retail REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 12.60%
C000008011 [Member] | Self Storage REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 5.00%
C000008011 [Member] | Telecom Tower REITs [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 6.90%
C000008011 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 11.10%
C000008011 [Member] | Vanguard Real Estate II Index Fund [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50% [4]
C000211922 [Member] | Asia [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50%
C000211922 [Member] | Europe [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 28.50%
C000211922 [Member] | North America [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 56.30%
C000211922 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
C000211921 [Member] | Asia [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 14.50%
C000211921 [Member] | Europe [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 28.50%
C000211921 [Member] | North America [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 56.30%
C000211921 [Member] | Other Assets and Liabilities Net [Member]  
Holdings [Line Items]  
Percent of Net Asset Value 0.70%
[1] Vanguard Real Estate II Index Fund ("the Subsidiary") is the wholly owned subsidiary in which the Fund has invested a portion of its assets.
[2] Vanguard Real Estate II Index Fund ("the Subsidiary") is the wholly owned subsidiary in which the Fund has invested a portion of its assets.
[3]
Vanguard Real Estate II Index Fund ("the Subsidiary") is the wholly owned subsidiary in which the Fund has invested a portion of its assets.
[4]
Vanguard Real Estate II Index Fund ("the Subsidiary") is the wholly owned subsidiary in which the Fund has invested a portion of its assets.