Stock-Based Compensation (Recognized Stock-Based Compensation Expense) (Details) (USD $) In Millions	3 Months Ended
	Aug. 28, 2011	Aug. 29, 2010
Stock-based compensation expense	$ 11.5	$ 13.2
Stock Options [Member]
Stock-based compensation expense	5.0	4.9
Restricted Stock/Restricted Stock Units [Member]
Stock-based compensation expense	1.3	2.1
Darden Stock Units [Member]
Stock-based compensation expense	2.1	2.4
Performance Stock Units [Member]
Stock-based compensation expense	2.6	3.1
Employee Stock Purchase Plan [Member]
Stock-based compensation expense	0.4	0.4
Director Compensation Program/Other [Member]
Stock-based compensation expense	$ 0.1	$ 0.3