Vanguard Growth Index Fund
Vanguard Mid-Cap Growth Index Fund
Vanguard Mid-Cap Value Index Fund
Vanguard Small-Cap Growth Index Fund
Vanguard Small-Cap Value Index Fund
Vanguard Value Index Fund
Vanguard Value Index Fund - Investor Shares
Vanguard Growth Index Fund - Investor Shares
Vanguard Value Index Fund - Admiral Shares
Vanguard Growth Index Fund - Admiral Shares
Vanguard Mid-Cap Growth Index Fund - Investor Shares
Vanguard Mid-Cap Value Index Fund - Investor Shares
Vanguard Small-Cap Value Index Fund - Investor Shares
Vanguard Small-Cap Growth Index Fund - Investor Shares
Vanguard Small-Cap Value Index Fund - Institutional Shares
Vanguard Small-Cap Growth Index Fund - Institutional Shares
Vanguard Value Index Fund - Institutional Shares
Vanguard Growth Index Fund - Institutional Shares
Vanguard Mid-Cap Growth Index Fund - ETF Shares
Vanguard Mid-Cap Value Index Fund - ETF Shares
Vanguard Small-Cap Value Index Fund - ETF Shares
Vanguard Small-Cap Growth Index Fund - ETF Shares
Vanguard Value Index Fund - ETF Shares
Vanguard Growth Index Fund - ETF Shares
Vanguard Value Index Fund - Signal Shares
Vanguard Growth Index Fund - Signal Shares
Vanguard Mid-Cap Growth Index Fund - Admiral Shares
Vanguard Mid-Cap Value Index Fund - Admiral Shares
Vanguard Small-Cap Value Index Fund - Admiral Shares
Vanguard Small-Cap Growth Index Fund - Admiral Shares
S&P 500 Value Index
S&P 500 Growth Index
S&P SmallCap 600 Growth Index
S&P SmallCap 600 Value Index
Spliced Value Index
Spliced Growth Index
Spliced Small Cap Value Index
Spliced Small Cap Growth Index
MSCI US Prime Market Value Index
MSCI US Prime Market Growth Index
MSCI US Small Cap Value Index
MSCI US Small Cap Growth Index
MSCI US Mid Cap Value Index
MSCI US Mid Cap Growth Index
S&P 500 Value Index
S&P 500 Growth Index
S&P SmallCap 600 Growth Index
S&P SmallCap 600 Value Index
Spliced Value Index
Spliced Growth Index
Spliced Small Cap Value Index
Spliced Small Cap Growth Index
MSCI US Prime Market Value Index
MSCI US Prime Market Growth Index
MSCI US Small Cap Value Index
MSCI US Small Cap Growth Index
MSCI US Mid Cap Value Index
MSCI US Mid Cap Growth Index
ETF
Institutional
Participant
Participant:
Retail
Signal
Acquired Fund Fees and Expenses (based on estimates)
Acquired Fund Fees and Expenses
Return After Taxes on Distributions and Sale of Fund Shares
Return After Taxes on Distributions
Annual Fund Operating Expenses [Expenses that you pay each year as a percentage of the value of your investment]
1990
1991
1992
1993
1994
1995
1996
1997
1998
1999
2000
2001
2002
2003
2004
2005
2006
2007
2008
2009
2010
2011
2012
2013
2014
Annual Return Caption
Annual Return Column
Annual Return Inception Date
Average Annual Return Caption
Average Annual Return Column
Inception Date
Average Annual Return Label
Since Inception
One Year
Five Years
Ten Years
Bar Chart and Performance Table
Bar Chart and Performance Table Section:
Bar Chart Closing:
Bar Chart Closing
Bar Chart Does Not Reflect Sales Loads
Bar Chart Footnotes
Bar Chart
Bar Chart Highest Quarterly Return
Bar Chart Highest Quarterly Return Date
Bar Chart Lowest Quarter Return
Bar Chart Lowest Quarter Return Date
Bar Chart Narrative:
Bar Chart Narrative
Bar Chart Reason Selected Class Different from Immediately Preceding Period
Bar Chart Returns for Class Not Offered in Prospectus
Annual Total Return
Bar Chart:
Year to Date Return
Date
Dividend Expenses on Securities Sold Short
Borrowing Expenses on Securities Sold Short
Other Operating Expenses
12b-1 Distribution Fee
Distribution or Similar (Non 12b-1) Fees / Assets
Exchange Fee
Exchange Fee / Redemption
Expense Breakpoint Discounts
Expense Breakpoint, Minimum Investment Required
Expense Example
Expense Example, with Redemption, Caption
Expense Example, with Redemption, Column
Expense Example Heading
Expense Example Closing
Expense Example Footnotes
EXAMPLE
Expense Example, Narrative [Text Block]
Expense Example, No Redemption:
Expense Example, no Redemption, Caption
Expense Example, no Redemption, Column
Expense Example, No Redemption Narrative [Text Block]
Expense Example, No Redemption
1 YEAR
3 YEAR
5 YEAR
10 YEAR
Expense Example, With Redemption
1 YEAR,
3 YEAR,
5 YEAR,
10 YEAR,
Expense Exchange Traded Fund Commissions
Expense Footnotes:
Expense Footnotes
Expenses Heading
Fees and Expenses of the Fund
Expenses:
Deferred Charges Narrative
Expenses Explanation of Nonrecurring Account Fee
Expenses Not Correlated to Ratio Due to Acquired Fund Fees
Expenses Other Expenses Had Extraordinary Expenses Been Included
Net Expenses / Assets
Expenses / Assets
Range of Exchange Fees Narrative
Expenses Represent Both Master and Feeder
Expenses Restated to Reflect Current
Fee Waiver or Reimbursement
Fee Waiver or Reimbursement, Date of Termination
Highest Quarterly Return Label
Index No Deduction for Fees, Expenses, Taxes
Lowest Quarterly Return Label
Management Expenses
Market Index Performance
Account Service Fee (for fund account balances below $10,000)
Maximum Account Fee / Assets
Sales charge (load) imposed on purchases
Purchase Fee
Maximum deferred sales charge (load) (as a percentage of the amount redeemed)
Maximum Deferred Sales Charge / Other
Maximum Sales Charge Imposed on Purchases / Offering Price
Sales charge (load) imposed on reinvested dividends
7-Day Tax Equivalent Yield
Money Market Seven Day Yield
Money Market 7-Day Yield Caption
Money Market 7-Day Yield Column
7-Day Yield Phone
Total Annual Fund Operating Expenses
Net Expenses / Assets:
Investment objective:
Investment objective
Secondary objectives
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Operating Expenses Caption
Operating Expenses Column
Other Expenses, New Fund, Based on Estimates
Other Expenses
Other Expenses:
Performance Additional Market Index
Performance Availability Phone
Performance Availability Website Address
Performance Information Illustrates Variability of Returns
Performance Measure [Axis]
Return Before Taxes
Performance Narrative:
Performance Narrative
Performance One Year or Less
Past Performance Does Not Indiciate Future Returns
Performance Table Closing:
Performance Table Closing
Performance Table Does Reflect Sales Loads
Performance Table Explains why after Tax Higher
Performance Table Footnotes, Reason Performance Information for Class Different from Immediately Preceding Period
Performance Table Footnotes
Bar Chart and Performance Table:
Performance Table Market Index Changed
Performance Table Narrative
Performance Table Not Relevant to Tax Deferred
One Class of After-Tax Shown
Bar Chart and Performance Table Section
Performance
Performance Table Uses Highest Federal Rate
Portfolio Turnover:
Portfolio Turnover Heading
PortfolioTurnover, Rate
Portfolio Turnover
Prospectus Date
Prospectus:
Share Class [Axis]
Prospectus [Table]
Redemption Fee USD
Redemption Fee
Risk
Risk Caption
Risk Closing [Text Block]
Risk Column
Risk Footnotes
Risk:
May Lose Money
Money Market Fund
Risk Narrative
Nondiversified
Not Insured Depository Institution
Risk/Return:
Risk/Return Detail [Table]
Risk/Return
RiskSection:
Share Classes
Other
Shareholder Fees (fees paid directly from your investment]
Shareholder Fees Caption
Shareholder Fees Column
Shareholder Fees (Fees paid directly from your investment) [Table]
Strategy:
StrategyNarrative
Strategy Portfolio Concentration
Strategy Section:
30-DayTax Equivalent Yield
Thirty Day Yield:
30-Day Yield Caption
30-Day Yield Column
30-Day Yield Phone
Year to Date Return Label
Series [Axis]
All Series
All Prospectuses
Prospectus [Axis]
Document Creation Date
Document Effective Date
Document Period End Date
Document Type
Registrant Name
Central Index Key
Amendment Flag
Amendment Description
Coregistrant Axis [Axis]
Coregistrant Domain
Transaction Fee on Conversion to ETF Shares
Transaction Fee On Purchases and Sales
Transaction Fee On Reinvested Dividends
Average Annual Returns for Periods Ended December 31, 2012
Supplement Text:
Supplement Text
Redemption Fee Parenthetical
Purchase Fee Parenthetical
Based on Market Value
Comparative Benchmark
Fund Operating Expenses Excluding AFFE
Acquired Fund Fees and Expenses
Return Before Taxes
Dividend Expenses on Securities Sold Short
Borrowing Expenses on Securities Sold Short
Other Operating Expenses
12b-1 Distribution Fee
Management Expenses
Account Service Fee (for fund account balances below $10,000)
Sales Charge (Load) Imposed on Purchases
Purchase Fee
Sales Charge (Load) Imposed on Reinvested Dividends
Total Annual Fund Operating Expenses
Other Expenses
Redemption Fee
Acquired Fund Fees and Expenses
Return Before Taxes
Dividend Expenses on Securities Sold Short
Borrowing Expenses on Securities Sold Short
Other Operating Expenses
12b-1 Distribution Fee
Management Expenses
Account Service Fee (for fund account balances below $10,000)
Sales Charge (Load) Imposed on Purchases
Purchase Fee
Sales Charge (Load) Imposed on Reinvested Dividends
Total Annual Fund Operating Expenses
Other Expenses
Redemption Fee