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COMMITMENTS AND CONTINGENCIES - Restructuring (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jul. 01, 2016	Jun. 30, 2017	Jul. 01, 2016
Restructuring Reserve [Roll Forward]
September 30, 2016			$ 1.6
Restructuring Charges	$ 3.1	$ 0.8	9.4	$ 3.7
Adjustments			(0.6)
Cash Payments			(8.5)
June 30, 2017	1.9		1.9
2017 Restructuring Plan
Restructuring Reserve [Roll Forward]
September 30, 2016			0.0
Restructuring Charges			9.4
Adjustments			0.0
Cash Payments			(7.5)
June 30, 2017	1.9		1.9
2016 Restructuring Plan and prior plans
Restructuring Reserve [Roll Forward]
September 30, 2016			1.6
Restructuring Charges			0.0
Adjustments			(0.6)
Cash Payments			(1.0)
June 30, 2017	$ 0.0		$ 0.0