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Stock-based Compensation and Other Stock Plans (Tables)
9 Months Ended
Sep. 28, 2013
Summary of Weighted-Average Assumptions of Fair Value Granted Using Black-Scholes Valuation Model

The following weighted-average assumptions were used in calculating the fair value of stock options granted during the three and nine month periods ended September 28, 2013, and September 29, 2012, using the Black-Scholes valuation model:

 

     Three Months Ended     Nine Months Ended  
     September 28,
2013
    September 29,
2012
    September 28,
2013
    September 29,
2012
 

Expected term of option (in years)

     3.67        5.29        4.29        5.36   

Expected volatility factor

     26.39     37.33     33.79     36.93

Expected dividend yield

     2.68     2.73     2.67     2.72

Risk-free interest rate

     0.64     0.67     0.79     0.82
Summary of Stock Option Activity

A summary of stock option activity as of and for the nine month period ended September 28, 2013, is presented below:

 

     Shares
(in thousands)
    Exercise
Price Per
Share (*)
     Remaining
Contractual
Term (*)
(in years)
     Aggregate
Intrinsic
Value
(in millions)
 

Outstanding at December 29, 2012

     2,161      $ 50.48         

Granted

     641        79.07         

Exercised

     (335     47.50         

Forfeited or expired

     (13     64.18         
  

 

 

         

Outstanding at September 28, 2013

     2,454        58.29         7.2       $ 101.7   
  

 

 

         

Exercisable at September 28, 2013

     1,226        46.88         5.7         64.8   

 

* Weighted-average
Summary of Changes in Non-Vested Performance Awards

The changes to the company’s non-vested performance awards during the nine month period ended September 28, 2013, are as follows:

 

     Shares
(in thousands)
    Fair Value Price
per Share (*)
 

Non-vested performance awards at December 29, 2012

     509      $ 59.36   

Granted

     172        77.31   

Vested

     (2     59.22   

Cancellations

     (2     69.42   
  

 

 

   

Non-vested performance awards at September 28, 2013

     677        63.89   
  

 

 

   

 

* Weighted-average
Stock Appreciation Rights (SARs) [Member]
 
Summary of Weighted-Average Assumptions of Fair Value Granted Using Black-Scholes Valuation Model

The following weighted-average assumptions were used in calculating the fair value of cash-settled SARs granted during the nine month periods ended September 28, 2013, and September 29, 2012, using the Black-Scholes valuation model:

 

     Nine Months Ended  
     September 28,
2013
    September 29,
2012
 

Expected term of cash-settled SARs (in years)

     3.55        4.74   

Expected volatility factor

     26.12     37.11

Expected dividend yield

     2.68     2.72

Risk-free interest rate

     0.63     0.62
Summary of Changes in Non-Vested Awards

Changes to the company’s non-vested cash-settled SARs during the nine month period ended September 28, 2013, are as follows:

 

     Cash-settled
SARs
(in thousands)
    Fair Value Price
per Share (*)
 

Non-vested SARs at December 29, 2012

     238      $ 24.26   

Granted

     4        23.89   

Vested

     (113     41.95   

Cancellations

     (3     —     
  

 

 

   

Non-vested SARs at September 28, 2013

     126        36.17   
  

 

 

   

 

* Weighted-average
Stock-Settled SARs [Member]
 
Summary of Weighted-Average Assumptions of Fair Value Granted Using Black-Scholes Valuation Model

The following weighted-average assumptions were used in calculating the fair value of stock-settled SARs granted during the three and nine month periods ended September 28, 2013, using the Black-Scholes valuation model:

 

     Three Months Ended     Nine Months Ended  
     September 28, 2013     September 28, 2013  

Expected term of stock-settled SARs (in years)

     3.67        4.24   

Expected volatility factor

     26.39     33.92

Expected dividend yield

     2.68     2.67

Risk-free interest rate

     0.64     0.91
Summary of Changes in Non-Vested Awards

Changes to the company’s non-vested stock-settled SARs during the nine month period ended September 28, 2013, are as follows:

 

     Stock-settled
SARs
(in thousands)
     Exercise
Price Per
Share (*)
     Remaining
Contractual
Term (*)
(in years)
     Aggregate
Intrinsic
Value
(in millions)
 

Outstanding at December 29, 2012

     —         $ —           

Granted

     122         79.29         

Exercised

     —           —           

Forfeited or expired

     —           —           
  

 

 

          

Outstanding at September 28, 2013

     122         79.29         9.4       $ 2.5   
  

 

 

          

Exercisable at September 28, 2013

     —           —           —           —     

 

* Weighted-average