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Annual Total Returns (Vanguard U.S. Growth Fund - Investor Shares Retail) (Vanguard U.S. Growth Fund, Vanguard U.S. Growth Fund - Investor Shares)
12 Months Ended
Aug. 31, 2013
Vanguard U.S. Growth Fund | Vanguard U.S. Growth Fund - Investor Shares
 
Annual Total Return  
2013 35.49%
2012 18.43%
2011 (0.68%)
2010 11.53%
2009 34.95%
2008 (37.82%)
2007 10.15%
2006 1.77%
2005 11.15%
2004 7.03%