PENSION BENEFIT PLANS - Narrative (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Employee	Sep. 30, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contributions to defined benefit pension plans			$ 112
Expense for all defined benefit pension and defined contribution plans	$ 2,400	$ 1,500	$ 5,300	$ 2,800
Danaher | United States
Defined Benefit Plan Disclosure [Line Items]
Number of employees participating in noncontributory defined benefit pension plans | Employee			0
Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Expected cash contribution requirements for defined benefit pension plans, less than			$ 1,000