|
Income Taxes (Narrative) (Details) (USD $)
|
0 Months Ended |
3 Months Ended |
12 Months Ended |
|
Jan. 27, 2014
|
Feb. 01, 2014
|
Jan. 31, 2015
|
Feb. 01, 2014
|
Feb. 02, 2013
|
| Operating Loss Carryforwards [Line Items] |
|
|
|
|
|
| Valuation allowance |
|
$ 304,000,000 |
$ 784,000,000 |
$ 304,000,000 |
|
| Net tax expense (benefit) |
|
270,000,000 |
23,000,000 |
(498,000,000) |
(551,000,000) |
| Operating loss carryforwards and tax credits, potential offset to future ordinary taxable income |
|
|
1,100,000,000 |
|
|
| Amended rights agreement, stockholder ownership percentage, maximum |
4.90% |
|
|
|
|
| Amended rights agreement, Minimum stock ownership percentage by which stockholders are prevented from acquiring additional shares |
4.90% |
|
|
|
|
| Amount of unrecognized tax benefits that would impact effective tax rate if recognized |
|
49,000,000 |
36,000,000 |
49,000,000 |
54,000,000 |
| Benefit of federal tax deduction of state taxes |
|
|
13,000,000 |
17,000,000 |
19,000,000 |
| Accrued interest and penalties for unrecognized tax benefits |
|
6,000,000 |
3,000,000 |
6,000,000 |
4,000,000 |
| Actuarial Gains in Other Comprehensive Income [Member] |
|
|
|
|
|
| Operating Loss Carryforwards [Line Items] |
|
|
|
|
|
| Net tax expense (benefit) |
|
|
(303,000,000) |
|
|
| Federal [Member] |
|
|
|
|
|
| Operating Loss Carryforwards [Line Items] |
|
|
|
|
|
| Net operating loss carryforward |
|
|
2,600,000,000 |
|
|
| Tax credit carryforwards |
|
|
$ 53,000,000 |
|
|