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OTHER FINANCIAL INFORMATION - Components of Inventories (Detail) - USD ($)
$ in Millions
Dec. 28, 2018
Sep. 28, 2018
Other Financial Information [Abstract]    
Raw materials and parts $ 330.0 $ 304.1
Work-in-process 61.8 50.6
Finished goods 77.8 83.4
Total inventories $ 469.6 $ 438.1