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Schedule II Valuation and Qualifying Accounts (Details) - USD ($)
$ in Millions
 12 Months Ended
May 28, 2016
May 30, 2015
May 31, 2014
Allowance for Doubtful Accounts, Current      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance $ 2.4 $ 3.4 $ 3.9
Valuation Allowances and Reserves, Charged to Cost and Expense 2.3 0.9 1.0
Valuation Allowances and Reserves, Deductions (1.3) (1.9) (1.5)
Valuation Allowances and Reserves, Ending Balance 3.4 2.4 3.4
Sales Returns and Allowances      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 0.4 0.6 0.5
Valuation Allowances and Reserves, Charged to Cost and Expense 0.0 0.0 0.1
Valuation Allowances and Reserves, Deductions 0.0 (0.2) 0.0
Valuation Allowances and Reserves, Ending Balance 0.4 0.4 0.6
Allowance for Doubtful Accounts, Noncurrent      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 1.0 0.1 0.2
Valuation Allowances and Reserves, Charged to Cost and Expense (0.1) 0.9 0.0
Valuation Allowances and Reserves, Deductions 0.0 0.0 (0.1)
Valuation Allowances and Reserves, Ending Balance 0.9 1.0 0.1
Valuation Allowance of Deferred Tax Assets      
Movement in Valuation Allowances and Reserves [Roll Forward]      
Valuation Allowances and Reserves, Beginning Balance 11.1 8.5 9.9
Valuation Allowances and Reserves, Charged to Cost and Expense (1.5) (0.6) (1.8)
Valuation Allowances and Reserves, Deductions 1.0 3.2 0.4
Valuation Allowances and Reserves, Ending Balance $ 10.6 $ 11.1 $ 8.5