Change in Accounting for Retirement-Related Benefits (Details) - USD ($)
$ / shares in Units, $ in Millions |
3 Months Ended |
|
Apr. 30, 2016 |
May. 02, 2015 |
Jan. 30, 2016 |
| Pension |
$ 2
|
$ (19)
|
|
| Income/(loss) before income taxes |
(69)
|
(144)
|
|
| Income tax expense/(benefit) |
$ (1)
|
$ 6
|
|
| Basic earnings/(loss) per common share |
$ (0.22)
|
$ (0.49)
|
|
| Diluted earnings/(loss) per common share |
$ (0.22)
|
$ (0.49)
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
$ (1)
|
$ 0
|
|
| Other Comprehensive Income (Loss), Net of Tax |
3
|
0
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
(65)
|
(150)
|
|
| Benefit plans |
(12)
|
(25)
|
|
| Reinvested earnings/(accumulated deficit) |
(3,075)
|
(2,644)
|
$ (3,007)
|
| Net income/(loss) |
(68)
|
(150)
|
|
| Accumulated other comprehensive income/(loss) |
(488)
|
(350)
|
$ (491)
|
| Deferred taxes |
$ (3)
|
1
|
|
| Previously Reported [Member] |
|
|
|
| Pension |
|
10
|
|
| Income/(loss) before income taxes |
|
(173)
|
|
| Income tax expense/(benefit) |
|
$ (6)
|
|
| Basic earnings/(loss) per common share |
|
$ (0.55)
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.55)
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 17
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
17
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(150)
|
|
| Benefit plans |
|
4
|
|
| Reinvested earnings/(accumulated deficit) |
|
(1,946)
|
|
| Net income/(loss) |
|
(167)
|
|
| Accumulated other comprehensive income/(loss) |
|
(1,048)
|
|
| Deferred taxes |
|
(11)
|
|
| As Adjusted [Member] |
|
|
|
| Pension |
|
(19)
|
|
| Income/(loss) before income taxes |
|
(144)
|
|
| Income tax expense/(benefit) |
|
$ 6
|
|
| Basic earnings/(loss) per common share |
|
$ (0.49)
|
|
| Diluted earnings/(loss) per common share |
|
$ (0.49)
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ 0
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
0
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
(150)
|
|
| Benefit plans |
|
(25)
|
|
| Reinvested earnings/(accumulated deficit) |
|
(2,644)
|
|
| Net income/(loss) |
|
(150)
|
|
| Accumulated other comprehensive income/(loss) |
|
(350)
|
|
| Deferred taxes |
|
1
|
|
| Effect of Change [Member] |
|
|
|
| Pension |
|
(29)
|
|
| Income/(loss) before income taxes |
|
29
|
|
| Income tax expense/(benefit) |
|
$ 12
|
|
| Basic earnings/(loss) per common share |
|
$ 0.06
|
|
| Diluted earnings/(loss) per common share |
|
$ 0.06
|
|
| Reclassifications for amortization of net actuarial (gain)/loss |
|
$ (17)
|
|
| Other Comprehensive Income (Loss), Net of Tax |
|
(17)
|
|
| Comprehensive Income (Loss), Net of Tax, Attributable to Parent |
|
0
|
|
| Benefit plans |
|
(29)
|
|
| Reinvested earnings/(accumulated deficit) |
|
(698)
|
|
| Net income/(loss) |
|
17
|
|
| Accumulated other comprehensive income/(loss) |
|
698
|
|
| Deferred taxes |
|
$ 12
|
|