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Financial Instruments and Fair Value Measurements (Schedule of Reconciliation of Changes in Fair Value of Contingent Liabilities) (Details) - Level 3 - Recurring - Contingent Liabilities
$ in Millions
3 Months Ended
Dec. 25, 2015
USD ($)
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]  
Beginning balance $ 174.6
Payments (30.0)
Accretion expense 1.8
Ending balance $ 146.4