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Canada Exit - Schedule of Income/(Loss) on Discontinued Operations (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Jan. 15, 2015
Jan. 30, 2016
Oct. 31, 2015
Aug. 01, 2015
May. 02, 2015
Jan. 31, 2015
Nov. 01, 2014
Aug. 02, 2014
May. 03, 2014
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Income / (loss) from discontinued operations   $ 5 $ 73 $ (20) $ (16) $ (3,600) $ (174) $ (157) $ (153) $ 42 $ (4,085) $ (723)
Canada Exit                        
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]                        
Sales                   0 1,902 1,317
Cost of sales                   0 1,541 1,121
SG&A expenses                   0 909 910
Depreciation and amortization                   0 248 227
Interest expense                   0 73 77
Pretax loss from operations                   0 (869) (1,018)
Pretax exit costs $ (5,105)                 (129) (5,105) 0
Income taxes                   171 1,889 295
Income / (loss) from discontinued operations                   $ 42 $ (4,085) $ (723)