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Commitments and Contingencies (Details 2) (USD $)
In Millions, unless otherwise specified
1 Months Ended 12 Months Ended
Apr. 30, 2012
Jun. 30, 2012
Jul. 02, 2011
Legal Proceedings      
Settlement value $ 7.9    
Changes in warranty reserve      
Balance as of the beginning of the year   7.9 7.3
Provision for warranty   9.5 6.7
Utilization of reserve   (7.9) (4.7)
Adjustments related to pre-existing warranties (including changes in estimates)   (1.4) (1.4)
Balance as of the end of the year   8.1 7.9
Minimum
     
Product Warranties      
Warranty Term for most products   3 months  
Tax Matters      
Range of estimated potential tax liability   0  
Maximum
     
Product Warranties      
Warranty Term for most products   1 year  
Tax Matters      
Range of estimated potential tax liability   $ 34.2