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Pension Plans (Narrative) (Details) (USD $)
In Millions
6 Months Ended 12 Months Ended
Jul. 02, 2011
Jul. 03, 2010
Dec. 31, 2011
Jan. 01, 2011
Pension Plans        
Estimated net actuarial loss that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost     $ 3.3  
Estimated net prior service cost that will be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost     0.2  
Contribution to defined benefit pension plans 1.2 1.0 2.2 4.1
Expected contribution to defined benefit pension plans $ 1.0