CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME/(LOSS) - USD ($) $ in Millions |
3 Months Ended |
9 Months Ended |
Oct. 29, 2016 |
Oct. 31, 2015 |
Oct. 29, 2016 |
Oct. 31, 2015 |
| Statement of Comprehensive Income [Abstract] |
|
|
|
|
|
|
| Net income/(loss) |
$ (67)
|
$ (115)
|
[1] |
$ (191)
|
$ (382)
|
[1] |
| Other comprehensive income/(loss), net of tax: |
|
|
|
|
|
|
| Prior service credit/(cost) arising during the period (1) |
0
|
0
|
[1] |
5
|
0
|
[1] |
| Reclassification for net actuarial (gain)/loss (2) |
(3)
|
0
|
[1] |
(5)
|
0
|
[1] |
| Reclassification for amortization of prior service (credit)/cost (3) |
0
|
0
|
[1] |
0
|
0
|
[1] |
| Gain/(loss) on interest rate swaps (4) |
2
|
(7)
|
[1] |
(7)
|
(14)
|
[1] |
| Reclassification for periodic settlements (5) |
2
|
1
|
[1] |
6
|
2
|
[1] |
| Deferred tax valuation allowance |
1
|
(4)
|
[1] |
0
|
(7)
|
[1] |
| Total other comprehensive income/(loss), net of tax |
2
|
(10)
|
[1] |
(1)
|
(19)
|
[1] |
| Total comprehensive income/(loss), net of tax |
(65)
|
(125)
|
[1] |
(192)
|
(401)
|
[1] |
| Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Plan Amendments, Tax Effect |
|
|
|
(3)
|
|
|
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Tax |
1
|
|
|
3
|
|
|
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), before Tax |
(4)
|
|
|
(8)
|
|
|
| Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax |
(1)
|
5
|
|
3
|
9
|
|
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax |
(1)
|
(1)
|
|
(3)
|
(2)
|
|
| Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax |
$ 3
|
$ 2
|
|
$ 9
|
$ 4
|
|
|
|