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Stockholders' Equity (Accumulated Other Comprehensive (Loss)/Income) (Details) (Accumulated Other Comprehensive (Loss)/Income [Member], USD $)
In Millions, unless otherwise specified |
9 Months Ended | 12 Months Ended |
|---|---|---|
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Oct. 29, 2011
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Jan. 29, 2011
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Accumulated Other Comprehensive (Loss)/Income [Member]
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| Net unrealized gains on REITs, Net of Tax | $ 152 | $ 112 |
| Net unrealized gains on REITs, Deferred Tax Liability | 84 | 62 |
| Net actuarial (loss)/gain and prior service (cost)/credit - pension and postretirement plans, Net of Tax | (897) | (917) |
| Net actuarial (loss)/gain and prior service (cost)/credit - pension and postretirement plans, Deferred Tax Asset | $ 572 | $ 585 |