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Stock Based Compensation Plans (Details)
12 Months Ended
Jun. 30, 2012
Y
Jul. 02, 2011
Y
Jul. 03, 2010
Y
Volatility assumption on the basis of Avnet's Stock      
Expected term (years) 6.00 6.00 6.00
Risk-free interest rate 1.20% 1.80% 3.00%
Weighted average volatility 33.70% 33.70% 34.30%
Dividend yield 0.00% 0.00% 0.00%