CONSOLIDATED STATEMENTS OF INCOME - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Net sales	$ 4,025.2	$ 3,985.8	$ 7,720.2	$ 7,737.7
Cost of sales (including special charges (a))	2,222.8	2,241.0	4,283.0	4,369.1
Selling, general and administrative expenses	1,067.7	1,075.7	2,117.7	2,153.4
Special (gains) and charges	24.6	12.2	54.1	40.4
Operating income	710.1	656.9	1,265.4	1,174.8
Other (income) expense	(13.0)	(12.6)	(26.0)	(25.2)
Interest expense, net	63.2	78.8	121.5	150.4
Income before income taxes	659.9	590.7	1,169.9	1,049.6
Provision for income taxes	131.4	95.7	234.9	138.0
Net income including noncontrolling interest	528.5	495.0	935.0	911.6
Net income attributable to noncontrolling interest	4.3	4.1	8.3	8.6
Net income attributable to Ecolab	$ 524.2	$ 490.9	$ 926.7	$ 903.0
Earnings attributable to Ecolab per common share
Basic (in dollars per share)	$ 1.85	$ 1.72	$ 3.27	$ 3.17
Diluted (in dollars per share)	$ 1.84	$ 1.71	$ 3.25	$ 3.14
Weighted-average common shares outstanding
Basic (in shares)	283.5	284.6	283.4	285.2
Diluted (in shares)	285.4	287.0	285.4	287.4
Product and equipment sales
Net sales	$ 3,156.8	$ 3,173.1	$ 6,058.7	$ 6,159.6
Cost of sales (including special charges (a))	1,728.4	1,770.6	3,333.8	3,449.8
Service and lease sales
Net sales	868.4	812.7	1,661.5	1,578.1
Cost of sales (including special charges (a))	$ 494.4	$ 470.4	$ 949.2	$ 919.3