Expense Example, No Redemption (Vanguard Small-Cap Growth Index Fund Retail)	Vanguard Small-Cap Growth Index Fund Vanguard Small-Cap Growth Index Fund - Investor Shares 1/1/2014 - 12/31/2014 USD ($)	Vanguard Small-Cap Growth Index Fund Vanguard Small-Cap Growth Index Fund - Admiral Shares 1/1/2014 - 12/31/2014 USD ($)
Expense Example, No Redemption:
1 YEAR	24	9
3 YEAR	74	29
5 YEAR	130	51
10 YEAR	293	115

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You would pay the following expenses if you did not redeem your shares. Include the second 1-, 3-, 5-, and 10-year periods and related narrative explanation only if a sales charge (load) or other fee is charged upon redemption.

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