Fair Value Measurements (Fair Values Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - USD ($) $ in Millions	May 28, 2017	May 29, 2016
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Available-for-sale Securities, Cost	$ 4.2
Fair Value, Measurements, Recurring | Quoted Prices in Active Market for Identical Assets (Liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	2.0	$ 3.9
Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	1.7	6.8
Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	0.0	0.0
Equity forwards | Fair Value, Measurements, Recurring | Quoted Prices in Active Market for Identical Assets (Liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	0.0	0.0
Equity forwards | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	(0.4)	3.8
Equity forwards | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	0.0	0.0
Corporate bonds | Fair Value, Measurements, Recurring | Quoted Prices in Active Market for Identical Assets (Liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
Corporate bonds | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	1.1	2.0
Corporate bonds | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
U.S. Treasury securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Market for Identical Assets (Liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	2.0	3.9
U.S. Treasury securities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
U.S. Treasury securities | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
Mortgage-backed securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Market for Identical Assets (Liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
Mortgage-backed securities | Fair Value, Measurements, Recurring | Significant Other Observable Inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	1.0	1.0
Mortgage-backed securities | Fair Value, Measurements, Recurring | Significant Unobservable Inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	0.0	0.0
Maturity, Less Than One Year
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Available-for-sale Securities, Cost	2.9
Maturity, One to Three Years
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	1.2
Fair Value of Assets (Liabilities)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	4.1
Fair Value of Assets (Liabilities) | Fair Value, Measurements, Recurring
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	3.7	10.7
Fair Value of Assets (Liabilities) | Equity forwards | Fair Value, Measurements, Recurring
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	(0.4)	3.8
Fair Value of Assets (Liabilities) | Corporate bonds | Fair Value, Measurements, Recurring
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	1.1	2.0
Fair Value of Assets (Liabilities) | U.S. Treasury securities | Fair Value, Measurements, Recurring
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	2.0	3.9
Fair Value of Assets (Liabilities) | Mortgage-backed securities | Fair Value, Measurements, Recurring
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	$ 1.0	$ 1.0