Annual report pursuant to Section 13 and 15(d)

Commitments And Guarantees (Narrative) (Details)

v2.4.0.6
Commitments And Guarantees (Narrative) (Details) (USD $)
In Millions, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
Dec. 25, 2010
Dec. 26, 2009
Commitments And Guarantees [Line Items]      
Rent expense $ 48 $ 44 $ 55
Deferred gain on sale leaseback transaction 37    
Period after beginning of fourth lease year rent will be adjusted thereafter, years 3    
Prior period rent will be adjusted by cumulative increase in consumer price index, years 3    
Lease expiration date various dates through 2022    
Total future lease obligations 175    
Purchase obligations $ 374    
Standard product service period, years 1    
Exceptional product service period, years 3    
Sale Leaseback Transaction [Member]
      
Commitments And Guarantees [Line Items]      
Lease term, years 20    
Lease expiration date December 2018    
Percentage of cumulative increase in consumer price index that rent will be adjusted 200.00%    
Maximum percentage of increase in rent payments 6.90%    
Maximum [Member]
      
Commitments And Guarantees [Line Items]      
Lease term, years 5    
Minimum [Member]
      
Commitments And Guarantees [Line Items]      
Lease term, years 1    
AMTC Revolving Credit Facility [Member]
      
Commitments And Guarantees [Line Items]      
Revolving credit facility joint and several guarantors obligation, percentage 50.00%