Workforce Reduction Costs (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		9 Months Ended
	Feb. 23, 2014		Feb. 23, 2014		Feb. 23, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	$ 0.2	[1]			$ 11.9
Payments			(3.8)
Adjustments			(0.6)
Balance at February 23, 2014	4.9		4.9		4.9
September 2013 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			8.5
January 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			0.8
Employee termination benefits
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	0.3	[1],[2]			11.2	[2]
Payments			(3.5)	[3]
Adjustments			(0.4)	[3]
Balance at February 23, 2014	4.5	[3]	4.5	[3]	4.5	[3]
Employee termination benefits | September 2013 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			7.7	[3]
Employee termination benefits | January 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			0.7	[3]
Other
Restructuring Cost and Reserve [Line Items]
Restructuring Charges	(0.1)	[1],[4]			0.7	[4]
Payments			(0.3)
Adjustments			(0.2)
Balance at February 23, 2014	0.4		0.4		0.4
Other | September 2013 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			0.8
Other | January 2014 Plan
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 0.1

[1] Reflects expense for the January 2014 Plan and subsequent adjustments to the September 2013 Plan based on updated information.

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

[3] Excludes costs associated with stock options and restricted stock that will be settled in shares upon vesting.

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