Income Taxes (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Dec. 27, 2013	Dec. 28, 2012	Sep. 27, 2013
Income Taxes [Line Items]
Provision for income taxes	$ 16.6	$ 17.1
Income from continuing operations before income taxes	63.0	36.9
Effective tax rate	26.30%	46.30%
Separation costs	2.2	12.0
Unrecognized tax benefits	100.7		100.1
Unrecognized tax benefits, net increase	0.6
Unrecognized tax benefits, additions related to prior period tax positions	4.3
Unrecognized tax benefits, additions related to current year tax positions	0.5
Unrecognized tax benefits, lapse of statute of limitations	4.2
Unrecognized tax benefits, which if favorably settled would benefit the effective tax rate	96.9
Interest accrued on unrecognized tax benefits	58.3		62.1
Unrecognized tax benefits that would impact effective tax rate, upper bound of change	11.1
Income tax penalties and interest accrued that would impact effective tax rate, upper bound of change	12.5
Separation Costs
Income Taxes [Line Items]
Tax benefit on separation costs	$ 0.7	$ 0.3