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Commitments and Contingencies (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 6 Months Ended 3 Months Ended 0 Months Ended
Dec. 29, 2012
Dec. 31, 2011
Dec. 29, 2012
Dec. 31, 2011
Dec. 29, 2012
Minimum
Dec. 29, 2012
Maximum
Apr. 02, 2012
Pennsylvania legal matter
Dec. 31, 2011
Pennsylvania legal matter
Oct. 01, 2011
Pennsylvania legal matter
Changes in warranty reserve                  
Balance as of beginning of period $ 7.6 $ 7.6 $ 8.1 $ 7.9          
Provision for warranty 1.0 2.2 2.9 4.8          
Utilization of reserve (0.1) (0.2) (1.4) (4.6)          
Adjustments related to pre-existing warranties (including changes in estimates) (1.7) (2.1) (2.8) (0.6)          
Balance as of end of period 6.8 7.5 6.8 7.5          
Tax Matters                  
Range of estimated potential tax liability         0 34.2      
Product Warranties                  
Warranty Term for most products         3 months 1 year      
Legal Proceedings                  
Accrued legal obligations                 7.4
Accrued interest               0.2  
Settlement value             $ 7.9