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Shareholder Fees (Vanguard Wellesley Income Fund, USD $)
12 Months Ended
Sep. 30, 2012
Vanguard Wellesley Income Fund - Investor Shares
 
Shareholder Fees (fees paid directly from your investment]  
Sales charge (load) imposed on purchases none
Purchase Fee none
Sales charge (load) imposed on reinvested dividends none
Redemption Fee none
Account Service Fee (for fund account balances below $10,000) $ 20
Vanguard Wellesley Income Fund - Admiral Shares
 
Shareholder Fees (fees paid directly from your investment]  
Sales charge (load) imposed on purchases none
Purchase Fee none
Sales charge (load) imposed on reinvested dividends none
Redemption Fee none
Account Service Fee (for fund account balances below $10,000) $ 20