CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income including noncontrolling interest	$ 379.5	$ 250.1	$ 875.1	$ 794.3
Foreign currency translation adjustments
Foreign currency translation	17.2	(211.5)	(1.3)	(556.3)
Gain (loss) on net investment hedges	(1.2)	(12.0)	(29.1)	66.8
Total foreign currency translation adjustments	16.0	(223.5)	(30.4)	(489.5)
Derivatives and hedging instruments	(9.5)	7.2	(40.2)	12.1
Pension and postretirement benefits
Amortization of net actuarial loss and prior service cost included in net periodic pension and postretirement costs	5.6	7.5	16.7	23.6
Postretirement benefits amendments	30.9		30.9
Total pension and postretirement benefits	36.5	7.5	47.6	23.6
Subtotal	43.0	(208.8)	(23.0)	(453.8)
Total comprehensive income, including noncontrolling interest	422.5	41.3	852.1	340.5
Comprehensive income (loss) attributable to noncontrolling interest	8.0	(7.0)	17.8
Comprehensive income attributable to Ecolab	$ 414.5	$ 48.3	$ 834.3	$ 340.5