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Shareholders' equity (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2012
Jul. 02, 2011
Jul. 03, 2010
Illustration of accumulated balances of comprehensive income      
Accumulated translation adjustments, net $ 90,798 $ 461,213 $ 131,329
Accumulated pension liability adjustments, net of income taxes (136,630) (84,002) (103,967)
Total $ (45,832) $ 377,211 $ 27,362