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Postretirement Health Care and Life Insurance Benefits (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Feb. 02, 2013	Jan. 29, 2011
Estimated net actuarial gain of postretirement benefit obligations	$ (3)
Deferred tax expense to reduce deferred tax asset as a result of eliminated deductibility of retiree health care payments		$ 4

The amount as of the balance sheet date of the estimated future tax effects attributable to items expensed for tax purposes but capitalized in conformity with generally accepted accounting principles, which will reverse in future periods when amortization of such capitalized costs cannot be deducted for tax purposes.

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- Definition

The amounts in accumulated other comprehensive income related to gains and losses that are not recognized immediately and are expected to be recognized as components of net periodic benefit cost over the next fiscal year that follows the most recent annual statement of financial position presented.

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