Stockholders' Equity (Components of Other Comprehensive Income/ (Loss) (Details) - USD ($)
$ in Millions |
3 Months Ended |
6 Months Ended |
Aug. 01, 2015 |
Aug. 02, 2014 |
Aug. 01, 2015 |
Aug. 02, 2014 |
| Stockholders' Equity Note [Abstract] |
|
|
|
|
| Reclassification for amortization of net actuarial (gain)/loss, gross amount |
$ 29
|
$ 16
|
$ 58
|
$ 33
|
| Reclassification for amortization of net actuarial (gain)/loss, tax |
(11)
|
(7)
|
(23)
|
(13)
|
| Reclassification for amortization of net actuarial (gain)/loss, net of tax |
18
|
9
|
35
|
20
|
| Reclassification for amortization of prior service (credit)/cost, gross amount |
0
|
1
|
|
|
| Reclassification for amortization of prior service (credit)/cost, tax |
0
|
0
|
|
|
| Reclassification for amortization of prior service credit/(cost), net of tax |
0
|
1
|
0
|
0
|
| Net gain/(loss) on interest rate swaps, before Tax |
(9)
|
0
|
(9)
|
0
|
| Net gain/(loss) on interest rate swaps, net of tax |
(6)
|
0
|
(6)
|
0
|
| Net gain(loss) on interest rate swaps, tax |
3
|
0
|
3
|
0
|
| Total, gross amount |
20
|
17
|
49
|
33
|
| Total, tax |
(8)
|
(7)
|
(20)
|
(13)
|
| Total, net of tax |
$ 12
|
$ 10
|
$ 29
|
$ 20
|