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Unaudited Consolidated Pro Forma Summary (Detail) (OfficeMax, USD $)
In Millions, except Per Share data, unless otherwise specified
12 Months Ended
Dec. 28, 2013
Dec. 29, 2012
OfficeMax
   
Business Acquisition, Pro Forma Information, Nonrecurring Adjustment [Line Items]    
Sales $ 16,879 $ 17,640
Net income 33 262
Net income attributable to common stockholders $ 31 $ 258
Basic $ 0.06 $ 0.50
Diluted $ 0.06 $ 0.49