CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income including noncontrolling interest	$ 438.3	$ 396.6	$ 1,040.1	$ 950.2
Foreign currency translation adjustments
Foreign currency translation	(201.8)	150.0	(218.9)	274.6
Gain (loss) on net investment hedges	9.1	(50.9)	31.9	(103.7)
Total foreign currency translation adjustments	(192.7)	99.1	(187.0)	170.9
Derivatives and hedging instruments	11.0	(20.8)	26.3	(29.1)
Pension and postretirement benefits
Amortization of net actuarial loss and prior service cost included in net periodic pension and postretirement costs	7.8	1.3	24.1	8.2
Postretirement benefits changes			14.4
Total pension and postretirement benefits	7.8	1.3	38.5	8.2
Subtotal	(173.9)	79.6	(122.2)	150.0
Total comprehensive income, including noncontrolling interest	264.4	476.2	917.9	1,100.2
Comprehensive income attributable to noncontrolling interest	1.7	4.0	5.9	10.8
Comprehensive income attributable to Ecolab	$ 262.7	$ 472.2	$ 912.0	$ 1,089.4