Fair Value Measurements (Fair Values Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Millions		Feb. 26, 2017	May 29, 2016
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Total		$ 4.3	$ 10.7
Equity forwards
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	[1]	(0.3)	3.8
Corporate bonds
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	2.0	2.0
U.S. Treasury securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[3]	1.8	3.9
Mortgage-backed securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	0.8	1.0
Quoted prices in active market for identical assets (liabilities) (Level 1)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Total		1.8	3.9
Quoted prices in active market for identical assets (liabilities) (Level 1) | Equity forwards
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	[1]	0.0	0.0
Quoted prices in active market for identical assets (liabilities) (Level 1) | Corporate bonds
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	0.0	0.0
Quoted prices in active market for identical assets (liabilities) (Level 1) | U.S. Treasury securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[3]	1.8	3.9
Quoted prices in active market for identical assets (liabilities) (Level 1) | Mortgage-backed securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	0.0	0.0
Significant other observable inputs (Level 2)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Total		2.5	6.8
Significant other observable inputs (Level 2) | Equity forwards
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	[1]	(0.3)	3.8
Significant other observable inputs (Level 2) | Corporate bonds
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	2.0	2.0
Significant other observable inputs (Level 2) | U.S. Treasury securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[3]	0.0	0.0
Significant other observable inputs (Level 2) | Mortgage-backed securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	0.8	1.0
Significant unobservable inputs (Level 3)
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Total		0.0	0.0
Significant unobservable inputs (Level 3) | Equity forwards
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Derivatives	[1]	0.0	0.0
Significant unobservable inputs (Level 3) | Corporate bonds
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	0.0	0.0
Significant unobservable inputs (Level 3) | U.S. Treasury securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[3]	0.0	0.0
Significant unobservable inputs (Level 3) | Mortgage-backed securities
Fair Value Assets and Liabilities Measured On Recurring Basis [Line Items]
Fixed-income securities	[2]	$ 0.0	$ 0.0

[1] The fair value of our equity forwards is based on the closing market value of Darden stock, inclusive of the risk of nonperformance.

[2] The fair value of these securities is based on closing market prices of the investments when applicable, or, alternatively, valuations utilizing market data and other observable inputs, inclusive of the risk of nonperformance.

[3] The fair value of our U.S. Treasury securities is based on closing market prices.