CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Net sales	$ 3,669.3	$ 3,320.8	$ 10,516.6	$ 9,368.5
Cost of sales (including special (gains) and charges (a))	2,291.6	2,016.7	6,576.1	5,572.7
Selling, general and administrative expenses	876.9	832.0	2,731.7	2,548.2
Special (gains) and charges	17.8	6.3	45.5	36.7
Operating income	483.0	465.8	1,163.3	1,210.9
Other (income) expense (b)	5.7	(13.0)	(32.6)	(27.5)
Interest expense, net (c)	65.1	76.4	174.1	173.7
Income before income taxes	412.2	402.4	1,021.8	1,064.7
Provision for income taxes	60.2	73.8	182.4	226.0
Net income including noncontrolling interest	352.0	328.6	839.4	838.7
Net income attributable to noncontrolling interest	4.9	4.1	12.1	9.8
Net income attributable to Ecolab	$ 347.1	$ 324.5	$ 827.3	$ 828.9
Earnings attributable to Ecolab per common share
Basic (in dollars per share)	$ 1.22	$ 1.13	$ 2.90	$ 2.90
Diluted (in dollars per share)	$ 1.21	$ 1.12	$ 2.88	$ 2.87
Weighted-average common shares outstanding
Basic (in shares)	284.9	286.4	285.4	286.1
Diluted (in shares)	286.3	289.2	287.0	289.0
Product and equipment sales
Net sales	$ 2,963.0	$ 2,653.8	$ 8,473.9	$ 7,461.6
Cost of sales (including special (gains) and charges (a))	1,877.1	1,625.1	5,371.7	4,452.9
Service and lease sales
Net sales	706.3	667.0	2,042.7	1,906.9
Cost of sales (including special (gains) and charges (a))	$ 414.5	$ 391.6	$ 1,204.4	$ 1,119.8