Share-Based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 29, 2013	Mar. 30, 2012	Mar. 29, 2013	Mar. 30, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	$ 4.8	$ 5.7	$ 8.8	$ 11.6
Tax Benefit on Share-Based Compensation Expense	1.9	2.2	3.5	4.5
Time-Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	2.1	2.0	4.0	4.1
Performance-Based Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	2.1	2.5	3.4	5.6
Installment Stock Purchase Opportunities (ISPOs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	0.2	0.1	0.6	0.3
Seamless Unit Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes		0.6	0.2	1.1
Deferred Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense, before taxes	$ 0.4	$ 0.5	$ 0.6	$ 0.5
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Granted (shares)			42,462	31,140