CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Net sales	$ 3,580.6	$ 3,162.7	$ 6,847.3	$ 6,047.7
Cost of sales (including special charges (a))	2,211.1	1,844.0	4,284.5	3,556.0
Selling, general and administrative expenses	940.1	853.3	1,854.8	1,716.2
Special (gains) and charges	3.6	17.6	27.7	30.4
Operating income	425.8	447.8	680.3	745.1
Other (income) expense	(19.5)	2.5	(38.3)	(14.5)
Interest expense, net	56.0	45.6	109.0	97.3
Income before income taxes	389.3	399.7	609.6	662.3
Provision for income taxes	76.6	86.1	122.2	152.2
Net income including noncontrolling interest	312.7	313.6	487.4	510.1
Net income attributable to noncontrolling interest	4.4	2.8	7.2	5.7
Net income attributable to Ecolab	$ 308.3	$ 310.8	$ 480.2	$ 504.4
Earnings attributable to Ecolab per common share
Basic (in dollars per share)	$ 1.08	$ 1.09	$ 1.68	$ 1.76
Diluted (in dollars per share)	$ 1.08	$ 1.08	$ 1.67	$ 1.75
Weighted-average common shares outstanding
Basic (in shares)	285.1	286.0	285.7	286.0
Diluted (in shares)	286.6	288.8	287.4	288.9
Product and equipment sales
Net sales	$ 2,886.8	$ 2,514.4	$ 5,510.9	$ 4,807.8
Cost of sales (including special charges (a))	1,799.0	1,464.9	3,494.6	2,827.8
Service and lease sales
Net sales	693.8	648.3	1,336.4	1,239.9
Cost of sales (including special charges (a))	$ 412.1	$ 379.1	$ 789.9	$ 728.2