Fair Value Measurements (Fair Values Of Financial Instruments Measured At Fair Value On Recurring Basis) (Details) (Fair Value, Measurements, Recurring [Member], USD $) In Millions, unless otherwise specified	Feb. 26, 2012		May 29, 2011
Estimate of Fair Value, Fair Value Disclosure [Member]
Total	$ 3.6		$ 14.7
Estimate of Fair Value, Fair Value Disclosure [Member] | Corporate Bonds [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	14.6	[1]	16.6	[1]
Estimate of Fair Value, Fair Value Disclosure [Member] | U.S. Treasury Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	13.2	[2]	10.6	[2]
Estimate of Fair Value, Fair Value Disclosure [Member] | Mortgage-Backed Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	10.0	[1]	4.9	[1]
Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member]
Total	13.2		10.6
Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member] | Corporate Bonds [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[1]	0	[1]
Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member] | U.S. Treasury Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	13.2	[2]	10.6	[2]
Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member] | Mortgage-Backed Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[1]	0	[1]
Significant Other Observable Inputs (Level 2) [Member]
Total	(9.6)		4.1
Significant Other Observable Inputs (Level 2) [Member] | Corporate Bonds [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	14.6	[1]	16.6	[1]
Significant Other Observable Inputs (Level 2) [Member] | U.S. Treasury Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[2]	0	[2]
Significant Other Observable Inputs (Level 2) [Member] | Mortgage-Backed Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	10.0	[1]	4.9	[1]
Significant Unobservable Inputs (Level 3) [Member]
Total	0		0
Significant Unobservable Inputs (Level 3) [Member] | Corporate Bonds [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[1]	0	[1]
Significant Unobservable Inputs (Level 3) [Member] | U.S. Treasury Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[2]	0	[2]
Significant Unobservable Inputs (Level 3) [Member] | Mortgage-Backed Securities [Member]
Fixed-income securities, Corporate bonds, U.S Treasury securities, and Mortgage-backed securities	0	[1]	0	[1]
Commodities Swaps And Futures [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0.5	[3]	0.7	[3]
Commodities Swaps And Futures [Member] | Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[3]	0	[3]
Commodities Swaps And Futures [Member] | Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0.5	[3]	0.7	[3]
Commodities Swaps And Futures [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[3]	0	[3]
Equity Forwards [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	(0.1)	[4]	0.9	[4]
Equity Forwards [Member] | Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[4]	0	[4]
Equity Forwards [Member] | Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	(0.1)	[4]	0.9	[4]
Equity Forwards [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[4]	0	[4]
Interest Rate Locks And Swaps [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	(34.8)	[5]	(19.6)	[5]
Interest Rate Locks And Swaps [Member] | Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[5]	0	[5]
Interest Rate Locks And Swaps [Member] | Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	(34.8)	[5]	(19.6)	[5]
Interest Rate Locks And Swaps [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[5]	0	[5]
Foreign Currency Forwards [Member] | Estimate of Fair Value, Fair Value Disclosure [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0.2	[6]	0.6	[6]
Foreign Currency Forwards [Member] | Quoted Prices In Active Market For Identical Assets (Liabilities) (Level 1) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0	[6]	0	[6]
Foreign Currency Forwards [Member] | Significant Other Observable Inputs (Level 2) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	0.2	[6]	0.6	[6]
Foreign Currency Forwards [Member] | Significant Unobservable Inputs (Level 3) [Member]
Derivatives, Commodities futures, swaps and options, Equity forwards, Interest rate swaps, and Foreign currency forwards	$ 0	[6]	$ 0	[6]

[1] 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.

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

[3] The fair value of our commodities futures, swaps and options classified as Level 2 is based on closing market prices of the contracts, inclusive of the risk of nonperformance.

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

[5] The fair value of our interest rate lock and swap agreements is based on current and expected market interest rates, inclusive of the risk of nonperformance.

[6] The fair value of our foreign currency forward contracts is based on closing forward exchange market prices, inclusive of the risk of nonperformance