Workforce Reduction Costs (Details) (USD $) In Millions, unless otherwise specified	2 Months Ended		3 Months Ended
	Nov. 24, 2013		Nov. 24, 2013
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			$ 11.7
Restructuring Reserve [Roll Forward]
Balance at September 20, 2013	8.5
Payments	(1.8)
Balance at November 24, 2013	6.7		6.7
Employee Severance
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			10.9
Restructuring Reserve [Roll Forward]
Balance at September 20, 2013	7.7	[1]
Payments	(1.7)	[1]
Balance at November 24, 2013	6.0	[1]	6.0	[1]
Other Restructuring
Restructuring Cost and Reserve [Line Items]
Restructuring Charges			0.8
Restructuring Reserve [Roll Forward]
Balance at September 20, 2013	0.8
Payments	(0.1)
Balance at November 24, 2013	$ 0.7		$ 0.7

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