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Investments (Details textual) (Non-marketable Equity Securities [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Sep. 30, 2012
Oct. 02, 2011
Apr. 01, 2012
Schedule of Cost-method Investments [Line Items]      
Cost-method Investments, Other than Temporary Impairment $ 0 $ 0  
Non-marketable equity securities [Abstract]      
Carrying value of non-marketable equity securities 2.3   1.7
Fox Enterprise [Member]
     
Non-marketable equity securities [Abstract]      
Carrying value of non-marketable equity securities $ 0.6