Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity Stockholders' Equity (Reclassifications Out of Accumulated Other Comprehensive Income/ (Loss) (Details) (Details)

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Stockholders' Equity Stockholders' Equity (Reclassifications Out of Accumulated Other Comprehensive Income/ (Loss) (Details) (Details) - USD ($)
$ in Millions
12 Months Ended
Jan. 30, 2016
Jan. 31, 2015
Feb. 01, 2014
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Reclassification adjustment for (gain)/loss on REITs included in net income/(loss), gross amount     $ 24
Tax (expense)/benefit     8
Reclassification adjustment for realized (gain)/loss (2) $ 0 $ 0 [1] (16) [1],[2]
Reclassification for amortization of net actuarial (gain)/loss included in net periodic benefit expense/(income), gross amount 53 12 2
Reclassification for amortization of prior service (credit)/cost (8) [3] 2 (1) [1] (1) [1]
Reclassification of net actuarial (gain)/loss recognized in net periodic benefit expense/(income) from a settlement, gross amount 180    
Other comprehensive income/(loss) (141) (491) [1] 380 [1]
Primary and Supplemental Pension Plans Total      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Amortization of actuarial (gain)/loss 53 12 (2)
Amortization of prior service cost/(credit) 8 7 7
Selling, General and Administrative Expenses [Member]      
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]      
Amortization of prior service (credit)/cost $ (7) $ (8) $ (8)
[1] As Adjusted
[2] Net of $8 million in tax in 2013 and $(24) million pre-tax gain recognized in Real estate and other, net in the Consolidated Statement of Operations.
[3] Net of $(1) million of tax in 2015, $- million of tax in 2014 and $- million in tax in 2013. Pre-tax amounts of $8 million in 2015, $7 million in 2014 and $7 million in 2013 were recognized in Pension in the Consolidated Statement of Operations. Pre-tax amounts of $(7) million in 2015, $(8) million in 2014 and $(8) million in 2013 were recognized in SG&A in the Consolidated Statement of Operations.