Investment Securities - Summary of Investment Securities (Details) - USD ($) $ in Millions	Sep. 01, 2018	Mar. 03, 2018
Available-for-sale securities:
Long term	$ 19.7	$ 19.4
Trading securities:
Short term	90.5	86.3
Held-to-maturity securities:
Short term	115.4	291.7
Total investment securities	$ 225.6	$ 397.4

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (available-for-sale), classified as noncurrent.

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Amount of investment in debt security measured at amortized cost (held-to-maturity), classified as current.

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

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Amount of investment in debt security measured at fair value with change in fair value recognized in net income (trading) and investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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