| Defined Benefit Plans [Domain] |
Pension Plans, Defined Benefit [Member] | Nonqualified Plans, Including Postretirement Health Care Benefits [Member] |
Qualified Pension Plan [Member] | Nonqualified Pension Plan [Member] | Other Postretirement Benefit Plans, Defined Benefit [Member] |
2005-01-30 - 2006-01-28 | 2005-01-30 - 2006-01-28 | 2005-01-30 - 2006-01-28 |
Defined Benefit Plan Disclosure [Line Items] | Defined Benefit Plan, before Adoption of SFAS 158 Recognition Provisions, Net Amount Recognized [Abstract] | | | |
| Defined Benefit Plan, Funded Status of Plan [Abstract] | | | |
| Defined Benefit Plan, Funded Status of Plan | 219,000,000 | (33,000,000) | (105,000,000) |
Defined Benefit Plan, before Adoption of SFAS 158 Recognition Provisions, Net Prior Service Costs (Credits), Not yet Recognized | 32,000,000 | | |
Defined Benefit Plan, before Adoption of SFAS 158 Recognition Provisions, Net (Gains) Losses, Not yet Recognized | 561,000,000 | 16,000,000 | 8,000,000 |
Defined Benefit Plan, before Adoption of SFAS 158 Recognition Provisions, Net Amount Recognized | 748,000,000 | (17,000,000) | (97,000,000) |