Postretirement Health Care and Life Insurance Benefits Postretirement Health Care and Life Insurance Benefits (Estimated Postretirement Benefit Payments in Future Years) (Details) - Other Postretirement Benefits Plan [Member] $ in Millions |
Feb. 01, 2020
USD ($)
|
|---|---|
| Expected Benefit [Abstract] | |
| 2020 | $ 14 |
| 2021 | 13 |
| 2022 | 12 |
| 2023 | 11 |
| 2024 | 10 |
| 2025-2029 | 41 |
| Expected Federal Subsidy [Abstract] | |
| 2020 | 0 |
| 2021 | 0 |
| 2022 | 0 |
| 2023 | 0 |
| 2024 | 0 |
| 2025-2029 | $ 1 |
| X | ||||||||||
- Definition Expected Benefit [Abstract] No definition available.
|
| X | ||||||||||
- Definition Expected Federal Subsidy [Abstract] No definition available.
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in next fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in third fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of benefits for defined benefit plan expected to be paid in second fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected after fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected in next fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected in fifth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected in fourth fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected in third fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipts expected in second fiscal year following latest fiscal year. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
|
| X | ||||||||||
- Details
|