Stock-Based Compensation (Recognized Stock-Based Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Feb. 22, 2015		Feb. 23, 2014		Feb. 22, 2015		Feb. 23, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 11.4		$ 6.3		$ 41.3		$ 33.2
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	2.4	[1]	3.6	[1]	17.1	[1]	15.1	[1]
Restricted Stock/ Restricted Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	0.5	[1]	(0.3)	[1]	1.6	[1]	0.5	[1]
Darden Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	4.1		2.2		8.9		10.1
Performance stock units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	3.6	[1]	0.2	[1]	11.6	[1]	4.3	[1]
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	0.3		0.5		1.0		1.4
Director Compensation Program Other
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense	$ 0.5		$ 0.1		$ 1.1		$ 1.8

[1] The increase for the nine months ended February 22, 2015 is primarily attributable to the workforce reduction efforts further discussed in Note 12.