RETIREMENT PLANS - Schedule of Net Periodic Benefit Costs (Detail) - Defined Benefit Plans - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Mar. 31, 2017	Apr. 01, 2016	Mar. 31, 2017	Apr. 01, 2016
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 1.7	$ 1.5	$ 3.5	$ 3.0
Interest cost	0.5	1.0	1.1	2.0
Expected return on plan assets	(1.7)	(1.7)	(3.5)	(3.4)
Amortization of prior service cost	0.0	0.0	(0.1)	0.0
Recognized actuarial loss	1.1	0.8	2.2	1.5
Net periodic benefit cost	$ 1.6	$ 1.6	$ 3.2	$ 3.1