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Condensed Consolidating Financial Information (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Nov. 26, 2011	Feb. 26, 2011	Nov. 27, 2010	Nov. 26, 2011 Convertible Debt [Member]	Feb. 26, 2011 Convertible Debt [Member]	Nov. 27, 2010 Convertible Debt [Member]	Jan. 31, 2002 Convertible Debt [Member]
Long-term Debt	$ 2,114	$ 1,152	$ 1,134	$ 387	$ 402	$ 402	$ 402
Guarantor subsidiary ownership percentage	100.00%

Including current and noncurrent portions, aggregate carrying amount of long-term borrowings as of the balance sheet date. May include notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, which had initial maturities beyond one year or beyond the normal operating cycle, if longer, and after deducting unamortized discount or premiums, if any.

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