GOODWILL AND INTANGIBLE ASSETS - Future Amortization Expense (Details) - USD ($) $ in Millions	Dec. 30, 2016	Sep. 30, 2016
Goodwill and Intangible Assets Disclosure [Abstract]
Future amortization expense, fiscal year 2017	$ 15.7
Future amortization expense, fiscal year 2018	18.7
Future amortization expense, fiscal year 2019	14.7
Future amortization expense, fiscal year 2020	13.4
Future amortization expense, fiscal year 2021	10.1
Thereafter	18.0
Total remaining amortization expense	$ 90.6	$ 95.9