CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net income including noncontrolling interest	$ 232.0	$ 235.4
Foreign currency translation adjustments
Foreign currency translation	(96.3)	(309.4)
Gain (loss) on net investment hedges	(15.0)	57.0
Total foreign currency translation adjustments	(111.3)	(252.4)
Derivatives and hedging instruments	(10.5)	7.8
Pension and postretirement benefits
Amortization of net actuarial loss and prior service cost included in net periodic pension and postretirement costs	5.6	8.0
Total pension and postretirement benefits	5.6	8.0
Subtotal	(116.2)	(236.6)
Total comprehensive income, including noncontrolling interest	115.8	(1.2)
Comprehensive income (loss) attributable to noncontrolling interest	4.6	1.0
Comprehensive income (loss) attributable to Ecolab	$ 111.2	$ (2.2)