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Receivables (Detail) - USD ($)
$ in Millions
Sep. 30, 2016
Oct. 02, 2015
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Accounts receivable, gross $ 970.8 $ 838.2
Allowance for doubtful accounts (24.4) (21.2)
Accounts receivable, net 946.4 817.0
Short-term 891.8 770.9
Long-term (1) 54.6 46.1
Notes Receivable    
Accounts, Notes, Loans and Financing Receivable [Line Items]    
Notes receivable 65.0 40.9
Short-term (2) 5.8 10.0
Long-term (1) $ 59.2 $ 30.9