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Stock-Based Compensation (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Apr. 01, 2012
Years
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Shares available for grant 2,289,065
Shares of common stock reserved for issuance 3,995,175
Total compensation cost not yet recognized $ 29.6
Total compensation cost not yet recognized - period for recognition 2.0
Stock Incentive Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares authorized 10,500,000
Supplemental Stock Incentive Plan [Member]
 
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Number of shares authorized 500,000
Stock Options [Member]
 
Options Outstanding and Exercisable:  
Options outstanding, number 890,940
Options exercisable, number 283,029
Options outstanding, weighted average exercise price $ 28.36
Options exercisable, weighted average exercise price $ 21.38
Options outstanding, aggregate intrinsic value 18.5
Options exercisable, aggregate intrinsic value 7.8
Options outstanding, weighted average remaining contractual term 4.8
Options exercisable, weighted average remaining contractual term 2.5
Restricted Stock Units [Member]
 
Restricted Stock Units Nonvested and Expected to Vest  
Restricted stock units nonvested, number 815,172
Restricted stock units expected to vest, number 702,662
Restricted stock units nonvested, weighted average grant date per share fair value $ 32.24
Restricted stock units expected to vest, weighted average grant date per share fair value $ 32.00
Restricted stock units nonvested, aggregate intrinsic value 40.0
Restricted stock units expected to vest, aggregate intrinsic value $ 34.5
Restricted stock units nonvested, weighted average remaining term to vest 1.7
Restricted stock units expected to vest, weighted average remaining term to vest 1.7