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Postretirement Health Care and Life Insurance Benefits (Estimated Postretirement Benefit Payments In Future Years) (Details) (USD $)
In Millions, unless otherwise specified |
Jan. 28, 2012
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Expected Benefit Payments [Member]
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| Expected Benefit | |
| 2012 | $ 28 |
| 2013 | 27 |
| 2014 | 25 |
| 2015 | 22 |
| 2016 | 21 |
| 2017-2021 | 95 |
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Expected Federal Subsidy [Member]
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| Expected Federal Subsidy | |
| 2012 | 1 |
| 2013 | 1 |
| 2014 | 1 |
| 2015 | 1 |
| 2016 | 1 |
| 2017-2021 | $ 4 |
| X | ||||||||||
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- Definition
The amount of the aggregate subsidy expected to be received in the five fiscal years thereafter (the aggregate amount of subsidy expected to be received in years 6 through 10 after the date of the latest statement of financial position). No definition available.
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| X | ||||||||||
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- Definition
The amount of subsidy expected to be received in Year 5. No definition available.
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| X | ||||||||||
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- Definition
The amount of subsidy expected to be received in Year 4. No definition available.
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| X | ||||||||||
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- Definition
The amount of the subsidy expected to be received in Year 1. No definition available.
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| X | ||||||||||
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- Definition
The amount of subsidy expected to be received in Year 3. No definition available.
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| X | ||||||||||
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- Definition
The amount of subsidy expected to be received in Year 2. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
The amount of the aggregate benefits expected to be paid in the five fiscal years thereafter (the aggregate amount of benefits expected to be paid in years 6 through 10 after the date of the latest statement of financial position). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the benefits expected to be paid in Year 5. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the benefits expected to be paid in Year 4. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the benefits expected to be paid in Year 1. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the benefits expected to be paid in Year 3. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The amount of the benefits expected to be paid in Year 2. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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