Share-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended
	Dec. 28, 2012	Dec. 30, 2011
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	$ 4.0	$ 5.9
Tax Benefit on Share-Based Compensation Expense	1.6	2.3
Time-Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	1.9	2.1
Performance-Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	1.3	3.1
Installment Stock Purchase Opportunities (ISPOs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	0.4	0.2
Seamless Unit Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	0.2	0.5
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	$ 0.2
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (shares)		17,066