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Income Taxes (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 29, 2012
Mar. 31, 2012
Sep. 29, 2012
Oct. 01, 2011
Income Tax Disclosure [Abstract]        
Effective tax rate     32.00% 34.70%
Unrecognized tax benefits, decreases resulting from prior period tax positions   $ 12.0    
Recognized tax expense   $ 5.6    
Significant change in unrecognized tax benefits is reasonably possible, other information We do not anticipate recognition of any material unrecognized tax benefits in the next twelve months.