|
Stockholders' Equity (Accumulated Other Comprehensive Income/ (Loss) (Details) (USD $)
In Millions, unless otherwise specified
|
3 Months Ended |
9 Months Ended |
|
|
Oct. 27, 2012
|
Oct. 29, 2011
|
Oct. 27, 2012
|
Oct. 29, 2011
|
Jan. 28, 2012
|
| January 28, 2012 |
|
|
$ 4,010 |
|
|
| Net unrealized gain/(loss) on REITs, Net of Tax Amount |
15 |
|
15 |
|
165 |
| Current period change, REITs |
|
|
(150) |
|
|
| Total other comprehensive income/(loss), net of tax |
(52) |
(8) |
(120) |
60 |
|
| Current period change, accumulated other comprehensive income/(loss) |
(52) |
(8) |
(120) |
60 |
|
| October 27, 2012 |
3,502 |
|
3,502 |
|
|
|
Net Actuarial Gain/(Loss) [Member]
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax |
(1,358) |
|
(1,358) |
|
(1,397) |
| Current period change, pension and postretirement benefits |
|
|
39 |
|
|
|
Prior Service Credit/(Cost) [Member]
|
|
|
|
|
|
| Accumulated Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net of Tax |
14 |
|
14 |
|
23 |
| Current period change, pension and postretirement benefits |
|
|
(9) |
|
|
|
Accumulated Other Comprehensive (Loss)/Income [Member]
|
|
|
|
|
|
| January 28, 2012 |
|
|
(1,209) |
|
|
| Total other comprehensive income/(loss), net of tax |
|
|
(120) |
|
|
| Current period change, accumulated other comprehensive income/(loss) |
|
|
(120) |
|
|
| October 27, 2012 |
$ (1,329) |
|
$ (1,329) |
|
|