Note 7 - Investment Securities - Summary of Investment Securities (Details) - USD ($) $ in Millions	Nov. 25, 2017	Feb. 25, 2017
Available-for-sale securities:
Long term	$ 19.5	$ 19.3
Trading securities:
Long term	88.2	70.3
Total investment securities	$ 107.7	$ 89.6

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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.

+ References

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

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Amount of investments in debt and equity securities and other forms of securities that provide ownership interests classified as trading.

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