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Accrued Liabilities (Tables)
3 Months Ended
Mar. 31, 2012
Accrued Liabilities [Abstract]  
Changes in warranty and product maintenance contract liability
                 
    Three Months
Ended
 

(In millions)

  March 31,
2012
    April 2,
2011
 

Accrual at the beginning of period

  $ 224     $ 242  

Provision

    63       57  

Settlements

    (65     (64

Adjustments to prior accrual estimates

    (3     (6
   

 

 

   

 

 

 

Accrual at the end of period

  $ 219     $ 229