PENSION BENEFIT PLANS - Narrative (Details)	3 Months Ended	9 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2015 USD ($) Employee
Defined Benefit Plan Disclosure [Line Items]
Expense for all defined benefit pension and defined contribution plans	$ 2,300,000	$ 5,100,000
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]
Contributions to defined benefit pension plans		$ 0
Expected cash contribution requirements for defined benefit pension plans, less than		$ 1,000,000