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Fair Value Measurements - Unrealized Gain (Loss) on Investments (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Sep. 01, 2018 | Sep. 02, 2017 | Jun. 02, 2018
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cost | $ 8.4 |  | $ 8.5
Unrealized Gain/(loss) | 0.1 |  | 0.1
Market Value | 8.5 |  | 8.6
Fixed Income Securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Cost | 7.7 |  | 7.8
Unrealized Gain/(loss) | (0.1) | $ (0.1) | (0.1)
Market Value | 7.6 |  | 7.7
Mutual funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Equity Securities, FV-NI, Cost | 0.7 |  | 0.7
Debt and equity securities, unrealized gain (loss) | 0.2 | $ 0.2 |
Mutual funds - equity | 0.9 |  | 0.9
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | 22.0 |  | 22.7
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Fixed Income Securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | 7.6 |  | 7.7
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Mutual funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Mutual funds - equity | 0.9 |  | 0.9
Fair Value, Inputs, Level 2 | Fair Value, Measurements, Recurring | Interest rate swap agreement |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | 14.4 |  | 15.0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | 0.0 |  | 0.0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Fixed Income Securities |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | 0.0 |  | 0.0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Mutual funds |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Mutual funds - equity | 0.0 |  | 0.0
Fair Value, Inputs, Level 3 | Fair Value, Measurements, Recurring | Interest rate swap agreement |  |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |  |
Market Value | $ 0.0 |  | $ 0.0

X
- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References No definition available. + Details
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X
- Definition Amount before tax of unrealized gain (loss) in accumulated other comprehensive income (AOCI) on investments in debt and equity securities classified as available-for-sale. + References No definition available. + Details
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- Definition This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any. + References No definition available. + Details
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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=99377092&loc=SL75136599-209740 + Details
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