CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Net sales	$ 3,852.1	$ 3,580.6	$ 7,423.7	$ 6,847.3
Cost of sales (including special charges (a))	2,334.8	2,211.1	4,540.0	4,284.5
Selling, general and administrative expenses	1,011.6	940.1	2,001.9	1,854.8
Special (gains) and charges	21.0	3.6	45.5	27.7
Operating income	484.7	425.8	836.3	680.3
Other (income) expense	(14.4)	(19.5)	(27.5)	(38.3)
Interest expense, net	77.8	56.0	152.0	109.0
Income before income taxes	421.3	389.3	711.8	609.6
Provision for income taxes	86.6	76.6	139.0	122.2
Net income including noncontrolling interest	334.7	312.7	572.8	487.4
Net income attributable to noncontrolling interest	5.0	4.4	9.7	7.2
Net income attributable to Ecolab	$ 329.7	$ 308.3	$ 563.1	$ 480.2
Earnings attributable to Ecolab per common share
Basic (in dollars per share)	$ 1.16	$ 1.08	$ 1.98	$ 1.68
Diluted (in dollars per share)	$ 1.15	$ 1.08	$ 1.97	$ 1.67
Weighted-average common shares outstanding
Basic (in shares)	284.9	285.1	284.8	285.7
Diluted (in shares)	286.3	286.6	286.1	287.4
Product and equipment sales
Net sales	$ 3,104.8	$ 2,886.8	$ 5,981.1	$ 5,510.9
Cost of sales (including special charges (a))	1,895.3	1,799.0	3,693.6	3,494.6
Service and lease sales
Net sales	747.3	693.8	1,442.6	1,336.4
Cost of sales (including special charges (a))	$ 439.5	$ 412.1	$ 846.4	$ 789.9