Financial Instruments and Fair Value Measurements (Schedule of Carrying Amount and Fair Value of Long-term Debt) (Details) (USD $) In Millions, unless otherwise specified	Mar. 28, 2014	Sep. 27, 2013
Carrying Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans payable	$ 0	$ 0.1
Carrying Value | Secured Debt | Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	1,296.8	0
Carrying Value | Senior Notes | 3.50% Senior Note
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	300.0	299.9
Carrying Value | Senior Notes | 4.75% Senior Note
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	598.2	598.2
Carrying Value | Debentures | 9.50% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	10.4	10.4
Carrying Value | Debentures | 8.00% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	8.0	8.0
Fair Value
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans payable	0	0.1
Fair Value | Secured Debt | Term Loan
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	1,301.0	0
Fair Value | Senior Notes | 3.50% Senior Note
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	296.0	293.7
Fair Value | Senior Notes | 4.75% Senior Note
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	571.6	568.5
Fair Value | Debentures | 9.50% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	14.2	14.3
Fair Value | Debentures | 8.00% Debenture
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long term debt	$ 10.2	$ 10.2