PENSION BENEFIT PLANS - Narrative (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2016 USD ($) Employee	Dec. 31, 2015 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Contributions to defined benefit pension plans			$ 169
Expense for all defined benefit pension and defined contribution plans	$ 1,900	$ 2,300	$ 7,200	$ 5,100
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