CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income including noncontrolling interest	$ 298.1	$ 263.6	$ 554.9	$ 495.6
Foreign currency translation adjustments
Foreign currency translation	44.0	77.8	125.2	(18.5)
Loss on net investment hedges	(55.6)	(12.9)	(52.8)	(27.9)
Total foreign currency translation adjustments	(11.6)	64.9	72.4	(46.4)
Derivatives and hedging instruments	0.9	(20.2)	(8.3)	(30.7)
Pension and postretirement benefits
Amortization of net actuarial loss and prior service cost included in net periodic pension and postretirement costs	3.6	5.5	6.9	11.1
Total pension and postretirement benefits	3.6	5.5	6.9	11.1
Subtotal	(7.1)	50.2	71.0	(66.0)
Total comprehensive income, including noncontrolling interest	291.0	313.8	625.9	429.6
Comprehensive income attributable to noncontrolling interest	2.3	5.2	6.8	9.8
Comprehensive income attributable to Ecolab	$ 288.7	$ 308.6	$ 619.1	$ 419.8