CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
CONSOLIDATED STATEMENT OF COMPREHENSIVE INCOME
Net (loss) income attributable to Ecolab	$ (1,205.1)	$ 1,558.9	$ 1,429.1
Net income from continuing operations attributable to noncontrolling interest	17.4	17.3	15.6
Net income (loss) from discontinued operations attributable to noncontrolling interest	2.2	0.0	(4.4)
Net (loss) income attributable to Ecolab, including noncontrolling interest	(1,185.5)	1,576.2	1,440.3
Foreign currency translation adjustments
Foreign currency translation	50.0	(45.1)	(223.3)
Separation of ChampionX	229.9
(Loss) gain on net investment hedges	(87.7)	31.4	57.5
Total foreign currency translation adjustments	192.2	(13.7)	(165.8)
Derivatives and hedging instruments	(17.0)	(3.4)	28.4
Pension and postretirement benefits
Current period net actuarial loss	(139.2)	(251.1)	(37.8)
Pension and postretirement prior period service (costs) and benefits	5.1	(0.3)	(2.3)
Amortization of net actuarial loss and prior service costs included in net periodic pension and postretirement costs	56.0	(0.2)	13.2
Postretirement benefits changes			44.9
Total pension and postretirement benefits	(78.1)	(251.6)	18.0
Subtotal	97.1	(268.7)	(119.4)
Total comprehensive income (loss), including noncontrolling interest	(1,088.4)	1,307.5	1,320.9
Comprehensive income attributable to noncontrolling interest	21.4	15.4	10.1
Comprehensive income (loss) attributable to Ecolab	$ (1,109.8)	$ 1,292.1	$ 1,310.8