| 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] |
2006-01-29 - 2007-02-03 | 2005-01-30 - 2006-01-28 | 2004-02-01 - 2005-01-29 | 2006-01-29 - 2007-02-03 | 2005-01-30 - 2006-01-28 | 2004-02-01 - 2005-01-29 | 2006-01-29 - 2007-02-03 | 2005-01-30 - 2006-01-28 | 2004-02-01 - 2005-01-29 |
Defined Benefit Plan Disclosure [Line Items] | | | | | | | | | |
| Defined Benefit Plan, Change in Benefit Obligation [Roll Forward] | | | | | | | | | |
| Defined Benefit Plan, Benefit Obligation | 1,764,000,000 | 1,626,000,000 | 1,515,000,000 | 36,000,000 | 33,000,000 | 34,000,000 | 115,000,000 | 105,000,000 | 107,000,000 |
Defined Benefit Plan, Service Cost | 82,000,000 | 66,000,000 | | 1,000,000 | 1,000,000 | | 3,000,000 | 2,000,000 | 3,000,000 |
Defined Benefit Plan, Interest Cost | 91,000,000 | 85,000,000 | | 2,000,000 | 2,000,000 | | 6,000,000 | 6,000,000 | 7,000,000 |
Defined Benefit Plan, Contributions by Plan Participants | | | | | | | 9,000,000 | 17,000,000 | 17,000,000 |
Defined Benefit Plan, Actuarial Net (Gains) Losses | 32,000,000 | 55,000,000 | | 5,000,000 | 4,000,000 | | 13,000,000 | 3,000,000 | 3,000,000 |
Defined Benefit Plan, Benefits Paid | 76,000,000 | 94,000,000 | | 5,000,000 | 5,000,000 | | 21,000,000 | 30,000,000 | 30,000,000 |
Defined Benefit Plan, Plan Amendments | 9,000,000 | (1,000,000) | | | (3,000,000) | | | | |