ACQUISITIONS - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		12 Months Ended
	Jan. 31, 2019	Mar. 31, 2019	Mar. 31, 2018	Dec. 31, 2018
Business Acquisition [Line Items]
Goodwill, expected to provide a tax benefit		$ 126.4
Contingent consideration, liability		10.7		$ 10.8
Additional consideration		$ 0.1	$ 0.1
Document Fiscal Year Focus		2019
ECS
Business Acquisition [Line Items]
Purchase price	$ 1,244.4	$ 1,244.3
Goodwill acquired	$ 558.8
Precision Hydraulic Cylinders
Business Acquisition [Line Items]
Purchase price				87.4
Goodwill acquired				26.9
Other Current Liabilities
Business Acquisition [Line Items]
Contingent consideration, liability		$ 10.7		0.8
Other Long-Term Liabilities
Business Acquisition [Line Items]
Contingent consideration, liability				$ 10.0