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Taxes (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended9 Months Ended
Apr. 01, 2012
percent
Sep. 30, 2011
Apr. 01, 2011
days
percent
Oct. 01, 2010
Sep. 30, 2011
banks
percent
customers
Oct. 01, 2010
percent
customers
Income Tax Contingency [Line Items]      
Effective tax rate    19.00%15.00%
Expected deferred tax benefit $ 53 $ 25  
Unamortized liability   30 30
Additional unamortized liability related to post-merger changes in tax matters 5  5 
Income tax rate reduction enacted   1.00%2.00% 
Percentage of corporate income tax tax rate effective1.00% 1.00%   
TCCC [Member]
      
Income Tax Contingency [Line Items]      
Cash Received From Tax Sharing Agreement 23    
Accounts Payable and Accrued Expense [Member]
      
Income Tax Contingency [Line Items]      
Unamortized liability 17  17 
Other Noncurrent Liabilities, Net [Member]
      
Income Tax Contingency [Line Items]      
Unamortized liability $ 13  $ 13