XML 11 R2.htm IDEA: XBRL DOCUMENT v2.4.0.6
Participant
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses (Vanguard Admiral Treasury Money Market Fund Participant) Vanguard Admiral Treasury Money Market Fund
Vanguard Admiral Treasury Money Market Fund - Investor Shares
Management Expenses 0.10%
12b-1 Distribution Fee none
Other Expenses 0.02%
Total Annual Fund Operating Expenses [1][2] 0.12%
[1] Vanguard and the Fund's Board have voluntarily agreed to temporarily limit certain net operating expenses in excess of the Fund's daily yield so as to maintain a zero or positive yield for the Fund. Vanguard and the Fund's Board may terminate the temporary expense limitation at any time.
[2] Vanguard and the Fund's Board have voluntarily agreed to temporarily limit certain net operating expenses in excess of the Fund|s daily yield so as to maintain a zero or positive yield for the Fund. Vanguard and the Fund|s Board may terminate the temporary expense limitation at any time.
Expense Example, No Redemption (Vanguard Admiral Treasury Money Market Fund Participant) Vanguard Admiral Treasury Money Market Fund (USD $)
1 YEAR
3 YEAR
5 YEAR
10 YEAR
Vanguard Admiral Treasury Money Market Fund - Investor Shares
 12 39 68 154
Retail
Annual Fund Operating Expenses (Expenses that you pay each year as a percentage of the value of your investment)
Annual Fund Operating Expenses (Vanguard Admiral Treasury Money Market Fund Retail) Vanguard Admiral Treasury Money Market Fund
Vanguard Admiral Treasury Money Market Fund - Investor Shares
Management Expenses 0.10%
12b-1 Distribution Fee none
Other Expenses 0.02%
Total Annual Fund Operating Expenses [1][2] 0.12%
[1] Vanguard and the Fund's Board have voluntarily agreed to temporarily limit certain net operating expenses in excess of the Fund's daily yield so as to maintain a zero or positive yield for the Fund. Vanguard and the Fund's Board may terminate the temporary expense limitation at any time.
[2] Vanguard and the Fund's Board have voluntarily agreed to temporarily limit certain net operating expenses in excess of the Fund|s daily yield so as to maintain a zero or positive yield for the Fund. Vanguard and the Fund|s Board may terminate the temporary expense limitation at any time.
Expense Example, No Redemption (Vanguard Admiral Treasury Money Market Fund Retail) Vanguard Admiral Treasury Money Market Fund (USD $)
1 YEAR
3 YEAR
5 YEAR
10 YEAR
Vanguard Admiral Treasury Money Market Fund - Investor Shares
 12 39 68 154