CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME
Net income including noncontrolling interest	$ 1,393.0	$ 1,108.9	$ 1,144.0
Foreign currency translation adjustments
Foreign currency translation	10.0	(333.4)	(10.9)
(Loss) gain on net investment hedges	(73.1)	108.3	51.6
Total foreign currency translation adjustments	(63.1)	(225.1)	40.7
Derivatives and hedging instruments	(7.8)	(1.2)	26.0
Pension and postretirement benefits
Pension and postretirement benefits	(55.1)	130.3	289.7
Subtotal	(126.0)	(96.0)	356.4
Total comprehensive income, including noncontrolling interest	1,267.0	1,012.9	1,500.4
Comprehensive income attributable to noncontrolling interest	18.5	13.0	10.9
Comprehensive income attributable to Ecolab	$ 1,248.5	$ 999.9	$ 1,489.5