Postretirement Health Care and Life Insurance Benefits (Narrative) (Details) $ in Millions |
12 Months Ended |
|---|---|
|
Jan. 30, 2021
USD ($)
| |
| Expected Federal Subsidy [Abstract] | |
| Estimated amount for entire time period presented | $ 1 |
| Maximum [Member] | |
| Expected Federal Subsidy [Abstract] | |
| 2021 | 1 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 1 |
| 2025 | 1 |
| 2026-2030 | $ 1 |
| X | ||||||||||
- Definition Expected Federal Subsidy [Abstract] No definition available.
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| X | ||||||||||
- Definition Amount of receipt from prescription drug subsidy which increases plan assets of defined benefit postretirement plan. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected after fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected in next fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected in fifth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected in fourth fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected in third fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount of prescription drug subsidy receipt expected in second fiscal year following current fiscal year. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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