XML 13 R6.htm IDEA: XBRL DOCUMENT v2.4.0.8
Label Element Value
Risk/Return: rr_RiskReturnAbstract  
Document Type dei_DocumentType Other
Document Period End Date dei_DocumentPeriodEndDate Aug. 31, 2013
Registrant Name dei_EntityRegistrantName Vanguard Admiral Funds
Central Index Key dei_EntityCentralIndexKey 0000891190
Amendment Flag dei_AmendmentFlag false
Document Creation Date dei_DocumentCreationDate Apr. 17, 2014
Document Effective Date dei_DocumentEffectiveDate Apr. 17, 2014
Vanguard S&P Mid-Cap 400 Value Index Fund | ETF
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 74.00%
Vanguard S&P Mid-Cap 400 Value Index Fund | Institutional
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 74.00%
Vanguard S&P Mid-Cap 400 Value Index Fund | Vanguard S&P Mid-Cap 400 Value Index Fund - Institutional Shares
  
Risk/Return: rr_RiskReturnAbstract  
Sales charge (load) imposed on purchases rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Purchase Fee rr_MaximumCumulativeSalesChargeOverOther none
Sales charge (load) imposed on reinvested dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Account Service Fee (for certain fund account balances below $10,000) rr_MaximumAccountFee 20
Management Fees rr_ManagementFeesOverAssets none
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.08%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.08% [1]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 8
3 YEAR rr_ExpenseExampleNoRedemptionYear03 26
5 YEAR rr_ExpenseExampleNoRedemptionYear05 45
10 YEAR rr_ExpenseExampleNoRedemptionYear10 103
Vanguard S&P Mid-Cap 400 Value Index Fund | Vanguard S&P Mid-Cap 400 Value Index Fund - ETF Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.11%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.09%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.20% [1]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 20
3 YEAR rr_ExpenseExampleNoRedemptionYear03 64
5 YEAR rr_ExpenseExampleNoRedemptionYear05 113
10 YEAR rr_ExpenseExampleNoRedemptionYear10 255
Vanguard S&P Small-Cap 600 Growth Index Fund | ETF
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 39.00%
Vanguard S&P Small-Cap 600 Growth Index Fund | Institutional
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 39.00%
Vanguard S&P Small-Cap 600 Growth Index Fund | Vanguard S&P Small-Cap 600 Growth Index Fund - Institutional Shares
  
Risk/Return: rr_RiskReturnAbstract  
Sales charge (load) imposed on purchases rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Purchase Fee rr_MaximumCumulativeSalesChargeOverOther none
Sales charge (load) imposed on reinvested dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Account Service Fee (for certain fund account balances below $10,000) rr_MaximumAccountFee 20
Management Fees rr_ManagementFeesOverAssets 0.01%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.07%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.08% [1]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 8
3 YEAR rr_ExpenseExampleNoRedemptionYear03 26
5 YEAR rr_ExpenseExampleNoRedemptionYear05 45
10 YEAR rr_ExpenseExampleNoRedemptionYear10 103
Vanguard S&P Small-Cap 600 Growth Index Fund | Vanguard S&P Small-Cap 600 Growth Index Fund - ETF Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.04%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.16%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.20% [2]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 20
3 YEAR rr_ExpenseExampleNoRedemptionYear03 64
5 YEAR rr_ExpenseExampleNoRedemptionYear05 113
10 YEAR rr_ExpenseExampleNoRedemptionYear10 255
Vanguard S&P Small-Cap 600 Index Fund | ETF
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 12.00%
Vanguard S&P Small-Cap 600 Index Fund | Institutional
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 12.00%
Vanguard S&P Small-Cap 600 Index Fund | Vanguard S&P Small-Cap 600 Index Fund - Institutional Shares
  
Risk/Return: rr_RiskReturnAbstract  
Sales charge (load) imposed on purchases rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Purchase Fee rr_MaximumCumulativeSalesChargeOverOther none
Sales charge (load) imposed on reinvested dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Account Service Fee (for certain fund account balances below $10,000) rr_MaximumAccountFee 20
Management Fees rr_ManagementFeesOverAssets 0.02%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.06%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.08% [2]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 8
3 YEAR rr_ExpenseExampleNoRedemptionYear03 26
5 YEAR rr_ExpenseExampleNoRedemptionYear05 45
10 YEAR rr_ExpenseExampleNoRedemptionYear10 103
Vanguard S&P Small-Cap 600 Index Fund | Vanguard S&P Small-Cap 600 Index Fund - ETF Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.08%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.07%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.15% [2]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 15
3 YEAR rr_ExpenseExampleNoRedemptionYear03 48
5 YEAR rr_ExpenseExampleNoRedemptionYear05 85
10 YEAR rr_ExpenseExampleNoRedemptionYear10 192
Vanguard S&P Small-Cap 600 Value Index Fund | ETF
  
Risk/Return: rr_RiskReturnAbstract  
Prospectus Date rr_ProspectusDate Dec. 23, 2013
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 37.00%
Vanguard S&P Small-Cap 600 Value Index Fund | Institutional
  
Risk/Return: rr_RiskReturnAbstract  
Shareholder Fees Caption rr_ShareholderFeesCaption Shareholder Fees (Fees paid directly from your investment)
Operating Expenses Caption rr_OperatingExpensesCaption Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
PortfolioTurnover, Rate rr_PortfolioTurnoverRate 37.00%
Vanguard S&P Small-Cap 600 Value Index Fund | Vanguard S&P Small-Cap 600 Value Index Fund - Institutional Shares
  
Risk/Return: rr_RiskReturnAbstract  
Sales charge (load) imposed on purchases rr_MaximumCumulativeSalesChargeOverOfferingPrice none
Purchase Fee rr_MaximumCumulativeSalesChargeOverOther none
Sales charge (load) imposed on reinvested dividends rr_MaximumSalesChargeOnReinvestedDividendsAndDistributionsOverOther none
Redemption Fee rr_RedemptionFeeOverRedemption none
Account Service Fee (for certain fund account balances below $10,000) rr_MaximumAccountFee 20
Management Fees rr_ManagementFeesOverAssets 0.01%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.07%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.08% [1]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 8
3 YEAR rr_ExpenseExampleNoRedemptionYear03 26
5 YEAR rr_ExpenseExampleNoRedemptionYear05 45
10 YEAR rr_ExpenseExampleNoRedemptionYear10 103
Vanguard S&P Small-Cap 600 Value Index Fund | Vanguard S&P Small-Cap 600 Value Index Fund - ETF Shares
  
Risk/Return: rr_RiskReturnAbstract  
Management Fees rr_ManagementFeesOverAssets 0.06%
12b-1 Distribution Fee rr_DistributionAndService12b1FeesOverAssets none
Other Expenses rr_OtherExpensesOverAssets 0.14%
Total Annual Fund Operating Expenses rr_NetExpensesOverAssets 0.20% [2]
1 YEAR rr_ExpenseExampleNoRedemptionYear01 20
3 YEAR rr_ExpenseExampleNoRedemptionYear03 64
5 YEAR rr_ExpenseExampleNoRedemptionYear05 113
10 YEAR rr_ExpenseExampleNoRedemptionYear10 255
[1] 1 The expense information shown in the table has been restated to reflect the removal of expenses incurred indirectly by the Fund through its investment in business development companies. The Fund's benchmark index no longer includes business development companies.
[2] 1 The expense information shown in the table has been restated to reflect the removal of expenses incurred indirectly by the Fund through its investment in business development companies. The Fund|s benchmark index no longer includes business development companies.