Income Taxes - Changes in Company's Unrecognized Tax Benefits (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Feb. 23, 2013	Feb. 25, 2012	Feb. 26, 2011
Income Tax Disclosure [Abstract]
Beginning balance	$ 165	$ 182	$ 133
Increase based on tax positions related to the current year	5	14	18
Decrease based on tax positions related to the current year	(1)	(1)	(1)
Increase based on tax positions related to prior years	83	21	41
Decrease based on tax positions related to prior years	(62)	(46)	(9)
Decrease due to lapse of statute of limitations	(3)	(5)
Ending balance	$ 187	$ 165	$ 182

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The gross amount of unrecognized tax benefits pertaining to uncertain tax positions taken in tax returns as of the balance sheet date.

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-Name Accounting Standards Codification

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions that have been or will be taken in the tax return for the current period, excluding amounts pertaining to examined tax returns.

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The gross amount of increases in unrecognized tax benefits resulting from tax positions taken in prior period tax returns, excluding amounts pertaining to examined tax returns.

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The gross amount of decreases in unrecognized tax benefits resulting from lapses of the applicable statutes of limitations.

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