Income Taxes (Details 1) (USD $) In Millions, unless otherwise specified	12 Months Ended
Feb. 25, 2012	Feb. 26, 2011	Feb. 27, 2010
Difference between the actual tax provision and the tax provision computed by applying the statutory federal income tax rate to earnings (losses) before income taxes
Federal taxes based on statutory rate	$ (360)	$ (533)	$ 221
State income taxes, net of federal benefit	(1)	(4)	20
Goodwill and intangible asset impairment	375	542
Other	(2)	(18)	(2)
Total income tax provision (benefit)	$ 12	$ (13)	$ 239

The sum of the current income tax expense or benefit and the deferred income tax expense or benefit pertaining to continuing operations.

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-Publisher FASB

-Name Accounting Standards Codification

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-Subparagraph a, b

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The amount of income tax expense or benefit for the period computed by applying the domestic federal statutory tax rates to pretax income from continuing operations.

+ References

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The portion of the difference between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations attributable to nondeductible impairment losses under enacted tax laws.

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The sum of other amounts reflected in the reconciliation of the statutory tax provision (benefit) to the actual tax provision (benefit).

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The portion of the difference, between total income tax expense or benefit as reported in the Income Statement for the period and the expected income tax expense or benefit computed by applying the domestic federal statutory income tax rates to pretax income from continuing operations, that is attributable to state and local income tax expense or benefit.

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