INVESTMENT SECURITIES (Details 2) (USD $) In Millions, unless otherwise specified	12 Months Ended
Mar. 02, 2013	Feb. 25, 2012
Investment securities disclosures
Long term - available-for-sale securities: Auction rate securities	$ 49.0	$ 73.7
Short term: Held-to-maturity securities	449.9	749.9
Long term - trading securities: Nonqualified deferred compensation plan assets	28.3	22.1
Auction Rate Securities
Investment securities disclosures
Available-for-sale investment securities, at par value	51.0	83.9
Temporary valuation adjustment on available-for-sale investment securities	2.0	3.7
Minimum asset coverage ratio required (as a percent)	200.00%	200.00%
Long term - available-for-sale securities: Auction rate securities	49.0	73.7
Available-for-sale securities redeemed at par	8.5
Available-for-sale securities tendered for sale at below par	24.3
Tender value of available-for-sale securities as a percent of par value (as a percent)	95.00%
Realized loss	1.1
U. S. Treasury Securities
Investment securities disclosures
Short term: Held-to-maturity securities	449.9	749.9
Long Term Trading Investment Securities
Investment securities disclosures
Long term - trading securities: Nonqualified deferred compensation plan assets	$ 28.3	$ 22.1

This element represents the par value of available-for-sale investment securities as of the balance sheet date.

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This element represents the temporary valuation adjustment related to available-for-sale investment securities which is recorded in accumulated other comprehensive (loss) income.

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Represents the par value of available-for-sale securities tendered at a price below par during the period.

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This element represents the minimum asset coverage ratio that closed end municipal bond funds are required to maintain pursuant to the Investment Company Act of 1940.

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Equity securities categorized neither as held-to-maturity nor trading which are intended be sold more than one year from the balance sheet date or operating cycle, if longer.

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This item represents the gross loss realized on the sale of debt or equity securities categorized neither as held-to-maturity nor trading securities.

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The aggregate value of securities held, which were categorized neither as trading nor held-to-maturity, for which the interest rate reset through an auction process, that failed to be liquidated through auction, and which were sold at par value during the period.

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Carrying amount as of the balance sheet date of assets held under deferred compensation agreements.

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This item represents investments in debt securities which are categorized as held-to-maturity and that have scheduled maturities within one year of the balance sheet date or the normal operating cycle, whichever is longer; such investments are measured at amortized cost (carrying value). The held-to-maturity category is for those securities that the Entity has the positive intent and ability to hold until maturity.

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