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Fair Value Measurements - Fair Value Hierarchy (Details) - USD ($) $ in Millions | Feb. 27, 2016 | May. 30, 2015
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Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | $ 7.3 | $ 5.7
Asset-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities |  | 0.2
Corporate Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities |  | 0.6
US Treasury and Government |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 0.4 | 4.4
Collateralized Mortgage Backed Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities |  | 0.5
Mutual funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 6.9 |
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Deferred Compensation Plan Fair Value Disclosure | 7.2 | 7.9
Assets, Fair Value Disclosure | 15.0 | 14.3
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0.7 | 0.2
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Foreign Exchange Forward |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0.5 | 0.7
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0.7 | 0.2
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Asset-backed securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 0.0 | 0.2
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Corporate Debt Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 0.0 | 0.6
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | US Treasury and Government |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 0.4 | 4.4
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Collateralized Mortgage Backed Securities |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | 0.0 | 0.5
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Mutual funds |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis |  |
Available-for-sale marketable securities | $ 6.9 | $ 0.0

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