Workforce Reduction Costs - Selling, General and Administrative Expenses (Details) (Selling, General and Administrative, USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Nov. 23, 2014		Nov. 24, 2013		Nov. 23, 2014		Nov. 24, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 27.4		$ 11.7		$ 27.4		$ 11.7
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	27.0	[1]	10.9	[1]	27.0	[1]	10.9	[1]
Other
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0.4	[2]	$ 0.8	[2]	$ 0.4	[2]	$ 0.8	[2]

[1] Includes salary and stock-based compensation expense.

[2] Includes postemployment medical, outplacement and relocation costs.