CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($)
$ in Millions
 12 Months Ended
Jan. 28, 2017
Jan. 30, 2016
Jan. 31, 2015
Statement of Comprehensive Income [Abstract]      
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax $ (2) $ 15  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax (1) (22) $ (5)
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Tax Effect (3) 0 8
Net income/(loss) 1 (513) (717)
Other comprehensive income/(loss), net of tax:      
Unrealized gain/(loss) (1) 0 0 (2) [1]
Net actuarial gain/(loss) arising during the period (2) [2] 1 (213) (293)
Prior service credit/(cost) arising during the period (3) [3] 5 0 (12)
Reclassification of net actuarial (gain)/loss from a settlement (4) [4] 0 110 0
Reclassification for net actuarial (gain)/loss (5) [5] 1 31 7
Reclassification for amortization of prior service (credit)/cost (6) [6] 0 2 (1)
Gain/(loss) on interest rate swaps (7) [7] 3 (23) 0
Reclassification for periodic settlements (8) [8] 8 6 0
Deferred tax valuation allowance 0 (54) (190)
Total other comprehensive income/(loss), net of tax 18 (141) (491)
Total comprehensive income/(loss), net of tax 19 (654) $ (1,208)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax (5) (4)  
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax $ 13 $ 10  
[1] Net of $1 million in tax in 2014.
[2] Net of $(1) million in tax in 2016, $136 million in tax in 2015 and $186 million in tax in 2014.
[3] Net of $(3) million in tax in 2016, $0 million in tax in 2015 and $8 million in tax in 2014.
[4] Net of $(70) million in tax in 2015 and $180 million of pre-tax amount recognized in Pension in the Consolidated Statement of Operations.
[5] Net of $(1) million in tax in 2016, $(22) million in tax in 2015 and $(5) million in tax in 2014. Pre-tax amounts of $11 million in 2016, $53 million in 2015 and $12 million in 2014 were recognized in Pension in the Consolidated Statement of Operations
[6] Net of $- million of tax in 2016, $(1) million of tax in 2015 and $- million of tax in 2014. Pre-tax amounts of $8 million in 2016, $8 million in 2015 and $7 million in 2014 were recognized in Pension in the Consolidated Statement of Operations. Pre-tax amounts of $(8) million in 2016, $(7) million in 2015 and $(8) million in 2014 were recognized in SG&A in the Consolidated Statement of Operations.
[7] Net of $(2) million and $15 million of tax in 2016 and 2015, respectively.
[8] Net of $(5) million and $(4) million of tax in 2016 and 2015, respectively. Pre-tax amounts of $13 million in 2016 and $10 million in 2015 were recognized in Net interest expense in the Consolidated Statement of Operations.