OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION - Reportable segment information (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Mar. 31, 2024	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
OPERATING SEGMENTS
Net sales	$ 4,005.2	$ 3,998.5	$ 3,985.8	$ 3,751.9	$ 3,938.4	$ 3,958.1	$ 3,852.1	$ 3,571.6	$ 15,741.4	$ 15,320.2	$ 14,187.8
Cost of sales	2,269.1	2,261.5	2,241.0	2,128.1	2,284.4	2,330.5	2,334.8	2,205.2	8,899.7	9,154.9	8,831.0
Selling, general and administrative expenses	1,050.0	1,024.8	1,075.7	1,077.7	1,034.8	1,024.9	1,011.6	990.3	4,228.2	4,061.6	3,653.8
Special (gains) and charges	103.3	(332.6)	12.2	28.2	29.2	36.7	21.0	24.5	(188.9)	111.4	140.5
Operating Income (Loss)	$ 582.8	$ 1,044.8	$ 656.9	$ 517.9	$ 590.0	$ 566.0	$ 484.7	$ 351.6	2,802.4	1,992.3	1,562.5
Operating segment
OPERATING SEGMENTS
Net sales									15,873.0	15,375.5	14,192.8
Cost of sales									8,974.2	9,182.2	8,836.4
Selling, general and administrative expenses									4,252.6	4,079.7	3,658.7
Special (gains) and charges									(188.9)	111.4	140.5
Operating Income (Loss)									2,835.1	2,002.2	1,557.2
Currency impact
OPERATING SEGMENTS
Net sales									(131.6)	(55.3)	(5.0)
Operating Income (Loss)									(32.7)	(9.9)	5.3
Global Pest Elimination
OPERATING SEGMENTS
Net sales									1,162.8	1,066.0	959.0
Global Pest Elimination | Operating segment
OPERATING SEGMENTS
Net sales									7,857.2	7,640.5	7,172.6
Cost of sales									4,691.2	4,769.7	4,692.1
Selling, general and administrative expenses									1,865.4	1,748.8	1,531.6
Operating Income (Loss)									1,300.6	1,122.0	948.9
Global Industrial
OPERATING SEGMENTS
Net sales									7,777.2	7,626.5	7,197.1
Global Industrial | Operating segment
OPERATING SEGMENTS
Net sales									5,413.9	5,014.6	4,433.2
Cost of sales									2,727.5	2,727.3	2,491.3
Selling, general and administrative expenses									1,503.7	1,445.5	1,310.0
Operating Income (Loss)									1,182.7	841.8	631.9
Global Institutional and Specialty
OPERATING SEGMENTS
Net sales									5,382.6	4,999.2	4,432.1
Global Institutional and Specialty | Operating segment
OPERATING SEGMENTS
Net sales									1,434.1	1,607.5	1,534.3
Cost of sales									895.1	1,026.9	956.2
Selling, general and administrative expenses									391.8	419.8	384.7
Operating Income (Loss)									147.2	160.8	193.4
Global Healthcare and Life Sciences
OPERATING SEGMENTS
Net sales									1,418.8	1,586.0	1,510.5
Global Healthcare and Life Sciences | Operating segment
OPERATING SEGMENTS
Net sales									1,167.8	1,070.2	963.5
Cost of sales									655.0	595.0	537.8
Selling, general and administrative expenses									292.4	264.8	228.4
Operating Income (Loss)									220.4	210.4	197.3
Corporate
OPERATING SEGMENTS
Net sales										42.5	89.1
Corporate | Operating segment
OPERATING SEGMENTS
Net sales										42.7	89.2
Cost of sales									5.4	63.3	159.0
Selling, general and administrative expenses									199.3	200.8	204.0
Special (gains) and charges									(188.9)	111.4	140.5
Operating Income (Loss)									$ (15.8)	$ (332.8)	$ (414.3)