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Fair Value Measurements Fair Value Measurements - Contingent Consideration (Details) - Fair Value, Measurements, Recurring - Fair Value, Inputs, Level 3 - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Dec. 02, 2017
Jun. 03, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Beginning balance $ 0.5 $ 2.7
Net realized losses (gains) 0.1 (0.2)
Payments 0.1 2.0
Ending balance $ 0.5 $ 0.5