Shareholder Report, Average Annual Return (Details)
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12 Months Ended |
60 Months Ended |
120 Months Ended |
Aug. 31, 2026 |
Aug. 31, 2026 |
Aug. 31, 2026 |
| C000085513 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Investor Shares
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| C000092010 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
19.69%
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12.04%
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15.05%
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| C000092009 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092012 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
29.67%
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11.77%
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11.68%
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| C000092011 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092014 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
10.76%
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11.82%
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17.86%
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| C000092013 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092016 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
26.50%
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6.90%
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10.61%
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| C000092015 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092017 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
30.13%
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8.51%
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10.04%
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| C000092018 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092020 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
23.35%
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5.08%
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10.70%
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| C000092019 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| C000092022 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
ETF Shares Net Asset Value
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| Average Annual Return, Percent |
20.07%
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11.71%
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14.73%
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| C000092021 |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Institutional Shares
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| Without Sales Load [Member] | C000085513 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
22.93%
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8.92%
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10.27%
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| Without Sales Load [Member] | C000092010 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
19.71%
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12.04%
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15.04%
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| Without Sales Load [Member] | C000092009 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
19.72%
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12.05%
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15.07%
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| Without Sales Load [Member] | C000092012 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
29.63%
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11.76%
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11.68%
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| Without Sales Load [Member] | C000092011 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
29.65%
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11.78%
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11.70%
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| Without Sales Load [Member] | C000092014 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
10.76%
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11.82%
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17.86%
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| Without Sales Load [Member] | C000092013 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
10.78%
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11.83%
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17.88%
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| Without Sales Load [Member] | C000092016 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
26.54%
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6.90%
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10.61%
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| Without Sales Load [Member] | C000092015 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
26.54%
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6.91%
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10.64%
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| Without Sales Load [Member] | C000092017 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
29.95%
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8.48%
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10.04%
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| Without Sales Load [Member] | C000092018 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
29.97%
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8.54%
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10.12%
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| Without Sales Load [Member] | C000092020 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
23.35%
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5.08%
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10.69%
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| Without Sales Load [Member] | C000092019 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
23.37%
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5.13%
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10.77%
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| Without Sales Load [Member] | C000092022 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
20.05%
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11.72%
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14.74%
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| Without Sales Load [Member] | C000092021 |
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| Average Annual Return [Line Items] |
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| Average Annual Return, Percent |
20.06%
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11.74%
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14.77%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Dow Jones U.S. Total Stock Market Float Adjusted Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Dow Jones U.S. Total Stock Market Float Adjusted Index
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| Average Annual Return, Percent |
20.15%
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11.70%
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14.78%
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| NACC2 Index: Russell 2500 Value Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2500 Value Index
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| Average Annual Return, Percent |
30.78%
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10.38%
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10.81%
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| NACC2 Index: Russell 1000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Index
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| Average Annual Return, Percent |
19.77%
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12.10%
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15.13%
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| NACC2 Index: Russell 1000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Index
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| Average Annual Return, Percent |
19.77%
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12.10%
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15.13%
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| NACC2 Index: Russell 1000 Value Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Value Index
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| Average Annual Return, Percent |
29.72%
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11.84%
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11.76%
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| NACC2 Index: Russell 1000 Value Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Value Index
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| Average Annual Return, Percent |
29.72%
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11.84%
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11.76%
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| NACC2 Index: Russell 1000 Growth Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Growth Index
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| Average Annual Return, Percent |
10.82%
|
11.88%
|
17.95%
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| NACC2 Index: Russell 1000 Growth Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 1000 Growth Index
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| Average Annual Return, Percent |
10.82%
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11.88%
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17.95%
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| NACC2 Index: Russell 2000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Index
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| Average Annual Return, Percent |
26.46%
|
6.85%
|
10.55%
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| NACC2 Index: Russell 2000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Index
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| Average Annual Return, Percent |
26.46%
|
6.85%
|
10.55%
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| NACC2 Index: Russell 2000 Value Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Value Index
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| Average Annual Return, Percent |
29.95%
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8.52%
|
10.08%
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| NACC2 Index: Russell 2000 Value Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Value Index
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| Average Annual Return, Percent |
29.95%
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8.52%
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10.08%
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| NACC2 Index: Russell 2000 Growth Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Growth Index
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| Average Annual Return, Percent |
23.25%
|
5.04%
|
10.66%
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| NACC2 Index: Russell 2000 Growth Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 2000 Growth Index
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| Average Annual Return, Percent |
23.25%
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5.04%
|
10.66%
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| NACC2 Index: Russell 3000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 3000 Index
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| Average Annual Return, Percent |
20.10%
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11.80%
|
14.84%
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| NACC2 Index: Russell 3000 Index |
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| Average Annual Return [Line Items] |
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| Line Graph and Table Measure Name |
Russell 3000 Index
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| Average Annual Return, Percent |
20.10%
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11.80%
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14.84%
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