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Derivative Instruments and Fair Value Measurements - Additional Information (Detail) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended 0 Months Ended 3 Months Ended 9 Months Ended 3 Months Ended 3 Months Ended
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Sep. 28, 2013
Sep. 27, 2014
Website
Sep. 27, 2014
Software
Sep. 27, 2014
Real Estate
Significant Unobservable Inputs (Level 3)
Sep. 27, 2014
Real Estate
Minimum
Significant Unobservable Inputs (Level 3)
Store
Sep. 27, 2014
Retail Stores
Sep. 28, 2013
Retail Stores
Sep. 27, 2014
Retail Stores
Sep. 28, 2013
Retail Stores
Sep. 27, 2014
Retail Stores
Favorable Lease
Sep. 27, 2014
Retail Stores
Discounted Cash Flow Analysis
Significant Unobservable Inputs (Level 3)
Store
Sep. 27, 2014
Retail Stores
Stores Reduced to Estimated Salvage Value
Significant Unobservable Inputs (Level 3)
Store
Sep. 27, 2014
Retail Stores
Decrease in Sales Scenario
Significant Unobservable Inputs (Level 3)
Sep. 27, 2014
Retail Stores
Decrease in Gross Margin Scenario
Significant Unobservable Inputs (Level 3)
Sep. 27, 2014
Retail Stores
Decrease in Gross Margin Scenario
Significant Unobservable Inputs (Level 3)
Additional impairment charges
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]                                    
Asset impairment charge $ 6 $ 49 $ 77 $ 58 $ 12 $ 28     $ 6 $ 5 $ 25 $ 14           $ 1
Intangible asset impairment charges                         1          
Number of anticipated closing stores               400                    
Anticipated stores closing end of year             2016                      
Number of stores impaired                           7 120      
Property and equipment, fair value                           1        
Percentage used for analysis                           13.00%        
Property and equipment, salvage value                             2      
Decrease in sales for scenario                               1.00% 0.50%  
Written off of capitalized software     13                              
Goodwill impairment charges   $ 44   $ 44