Basis Of Presentation and Summary of Significant Accounting Policies Other accrued expenses and liabilities (Details) (USD $) In Millions, unless otherwise specified	Sep. 28, 2012	Sep. 30, 2011
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Advanced payments from clients, current	$ 278.5	$ 242.3
Accrued Insurance	$ 92.2	$ 86.7