RETIREMENT PLANS - Schedule of Net Periodic Benefit Costs (Detail) - Defined Benefit Plans - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1.7	$ 1.5	$ 5.2	$ 4.5
Interest cost	0.6	1.0	1.7	3.0
Expected return on plan assets	(1.7)	(1.7)	(5.2)	(5.1)
Amortization of prior service cost	0.0	0.0	(0.1)	0.0
Recognized actuarial loss	1.1	0.7	3.3	2.2
Net periodic benefit cost	$ 1.7	$ 1.5	$ 4.9	$ 4.6