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Goodwill and Other Identifiable Intangible Assets - Estimated Future Amortization Expense for Identifiable Intangible Assets (Detail)
$ in Millions
Sep. 26, 2015
USD ($)
Finite-Lived Intangible Assets [Line Items]  
Q4 2015 $ 39.4
2016 157.4
2017 155.9
2018 153.5
2019 146.7
2020 $ 141.6