Note 4 - Investment Securities (Details) - Investment Securities (USD $) In Millions, unless otherwise specified	Aug. 30, 2014	Mar. 01, 2014
Available-for-sale securities:
Long term	$ 47.5	$ 47.7
Trading securities:
Long term	44.9	39.7
Held-to-maturity securities:
Short term	60.0	489.3
Total investment securities	$ 152.4	$ 576.7

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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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-Publisher FASB

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-SubTopic 10

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

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-Publisher FASB

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-Topic 210

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-Section S99

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Amount after other than temporary impairment (OTTI) accretion, of investments in debt securities classified as held-to-maturity, expected to be converted to cash, sold or exchanged within one year or the normal operating cycle.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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-SubTopic 10

-Section 45

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Sum of the carrying amounts as of the balance sheet date of all investments.

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 944

-SubTopic 210

-Section S99

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