Change in Accounting for Retirement-Related Benefits (Details) - USD ($)
$ / shares in Units, $ in Millions |
3 Months Ended |
6 Months Ended |
|
Jul. 30, 2016 |
Aug. 01, 2015 |
Jul. 30, 2016 |
Aug. 01, 2015 |
Jan. 30, 2016 |
| Pension |
$ 2
|
$ (16)
|
[1] |
$ 4
|
$ (35)
|
|
|
| Income/(loss) before income taxes |
(51)
|
(112)
|
[1] |
(120)
|
(256)
|
[1] |
|
| Income tax expense/(benefit) |
$ 5
|
$ 5
|
[1] |
$ 4
|
$ 11
|
|
|
| Basic earnings/(loss) per common share |
$ (0.18)
|
$ (0.38)
|
[1] |
$ (0.40)
|
$ (0.87)
|
[1] |
|
| Diluted earnings/(loss) per common share |
$ (0.18)
|
$ (0.38)
|
[1] |
$ (0.40)
|
$ (0.87)
|
[1] |
|
| Reclassifications for amortization of net actuarial (gain)/loss |
$ (1)
|
$ 0
|
[1] |
$ (2)
|
$ 0
|
[1] |
|
| Deferred tax valuation allowance |
(1)
|
(3)
|
[1] |
(1)
|
(3)
|
[1] |
|
| Other Comprehensive Income (Loss), Net of Tax |
(6)
|
(9)
|
[1] |
(3)
|
(9)
|
[1] |
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
(62)
|
(126)
|
[1] |
(127)
|
(276)
|
[1] |
|
| Benefit plans |
(15)
|
(23)
|
[1] |
(27)
|
(48)
|
[1] |
|
| Reinvested earnings/(accumulated deficit) |
(3,131)
|
(2,761)
|
[1] |
(3,131)
|
(2,761)
|
[1] |
$ (3,007)
|
| Net income/(loss) |
(56)
|
(117)
|
[1] |
(124)
|
(267)
|
[1] |
|
| Accumulated other comprehensive income/(loss) |
(494)
|
(359)
|
[1] |
(494)
|
(359)
|
[1] |
$ (491)
|
| Deferred taxes |
$ 3
|
2
|
[1] |
$ 0
|
3
|
[1] |
|
| Previously Reported [Member] |
|
|
|
|
|
|
|
| Pension |
|
13
|
|
|
23
|
|
|
| Income/(loss) before income taxes |
|
(141)
|
|
|
(314)
|
|
|
| Income tax expense/(benefit) |
|
$ (3)
|
|
|
$ (9)
|
|
|
| Basic earnings/(loss) per common share |
|
$ (0.45)
|
|
|
$ (1.00)
|
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.45)
|
|
|
$ (1.00)
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 18
|
|
|
$ 35
|
|
|
| Deferred tax valuation allowance |
|
0
|
|
|
0
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
12
|
|
|
29
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(126)
|
|
|
(276)
|
|
|
| Benefit plans |
|
6
|
|
|
10
|
|
|
| Reinvested earnings/(accumulated deficit) |
|
(2,084)
|
|
|
(2,084)
|
|
|
| Net income/(loss) |
|
(138)
|
|
|
(305)
|
|
|
| Accumulated other comprehensive income/(loss) |
|
(1,036)
|
|
|
(1,036)
|
|
|
| Deferred taxes |
|
(6)
|
|
|
(17)
|
|
|
| As Adjusted [Member] |
|
|
|
|
|
|
|
| Income/(loss) before income taxes |
|
$ (112)
|
|
|
$ (256)
|
|
|
| Basic earnings/(loss) per common share |
|
$ (0.38)
|
|
|
$ (0.87)
|
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.38)
|
|
|
$ (0.87)
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 0
|
|
|
$ 0
|
|
|
| Deferred tax valuation allowance |
|
(3)
|
|
|
(3)
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
(9)
|
|
|
(9)
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(126)
|
|
|
(276)
|
|
|
| Net income/(loss) |
|
(117)
|
|
|
(267)
|
|
|
| Effect of Change [Member] |
|
|
|
|
|
|
|
| Pension |
|
(29)
|
|
|
(58)
|
|
|
| Income/(loss) before income taxes |
|
29
|
|
|
58
|
|
|
| Income tax expense/(benefit) |
|
$ 8
|
|
|
$ 20
|
|
|
| Basic earnings/(loss) per common share |
|
$ 0.07
|
|
|
$ 0.13
|
|
|
| Diluted earnings/(loss) per common share |
|
$ 0.07
|
|
|
$ 0.13
|
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ (18)
|
|
|
$ (35)
|
|
|
| Deferred tax valuation allowance |
|
(3)
|
|
|
(3)
|
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
(21)
|
|
|
(38)
|
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
0
|
|
|
0
|
|
|
| Benefit plans |
|
(29)
|
|
|
(58)
|
|
|
| Reinvested earnings/(accumulated deficit) |
|
(677)
|
|
|
(677)
|
|
|
| Net income/(loss) |
|
21
|
|
|
38
|
|
|
| Accumulated other comprehensive income/(loss) |
|
677
|
|
|
677
|
|
|
| Deferred taxes |
|
$ 8
|
|
|
$ 20
|
|
|
|
|