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Summary of Significant Accounting Policies (Revenue Recognition) (Details) (USD $)
In Millions, unless otherwise specified
12 Months Ended
Dec. 29, 2013
Dec. 30, 2012
Jan. 01, 2012
Change in Accounting Estimate [Line Items]      
Favorable effect of change in accounting estimate on operating income $ 21.4 $ 18.0 $ 4.7
Unfavorable effect of change in accounting estimate on operating income 23.2 19.2 4.4
Contracts Accounted for under Percentage of Completion [Member]
     
Change in Accounting Estimate [Line Items]      
Net effect of change in accounting estimate on operating income $ 1.8 $ 1.2 $ 0.3