OPERATING SEGMENTS AND GEOGRAPHIC INFORMATION (Details) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Jun. 30, 2024 USD ($) segment	Mar. 31, 2024 USD ($)	Dec. 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 segment	Dec. 31, 2024 item	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)
Number of operating units			8							8	8
Number of reportable segments | segment										4
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
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
Previously Reported | Valued at 2023 fixed currency rates
Net sales												15,320.2	14,187.8
Operating Income (Loss)												1,992.3	1,562.5
Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												15,320.2	14,187.8
Operating Income (Loss)												1,992.3	1,562.5
Global Industrial
Net sales									7,777.2			7,626.5	7,197.1
Global Institutional and Specialty
Net sales									5,382.6			4,999.2	4,432.1
Global Healthcare and Life Sciences
Net sales									1,418.8			1,586.0	1,510.5
Global Pest Elimination
Net sales									1,162.8			1,066.0	959.0
Corporate
Net sales												42.5	89.1
Operating segment
Net sales									15,873.0			15,375.5	14,192.8
Operating Income (Loss)									2,835.1			2,002.2	1,557.2
Operating segment | Previously Reported | Valued at 2023 fixed currency rates
Net sales												15,275.4	14,093.4
Operating Income (Loss)												1,987.0	1,546.3
Operating segment | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												15,375.5	14,192.8
Operating Income (Loss)												2,002.2	1,557.2
Operating segment | Purchase Price Adjustments | Changes in Currency Rates
Net sales												100.1	99.4
Operating Income (Loss)												15.2	10.9
Operating segment | Global Industrial
Net sales									5,413.9			5,014.6	4,433.2
Operating Income (Loss)									1,182.7			841.8	631.9
Operating segment | Global Industrial | Previously Reported | Valued at 2023 fixed currency rates
Net sales												7,193.1	6,736.3
Operating Income (Loss)												1,080.7	935.8
Operating segment | Global Industrial | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												7,640.5	7,172.6
Operating Income (Loss)												1,122.0	948.9
Operating segment | Global Industrial | Purchase Price Adjustments | Changes in Currency Rates
Net sales												40.1	43.8
Operating Income (Loss)												2.3	2.8
Operating segment | Global Industrial | Purchase Price Adjustments | Segment Changes
Net sales												407.3	392.5
Operating Income (Loss)												39.0	10.3
Operating segment | Global Institutional and Specialty
Net sales									1,434.1			1,607.5	1,534.3
Operating Income (Loss)									147.2			160.8	193.4
Operating segment | Global Institutional and Specialty | Previously Reported | Valued at 2023 fixed currency rates
Net sales												4,994.0	4,414.3
Operating Income (Loss)												823.0	621.7
Operating segment | Global Institutional and Specialty | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												5,014.6	4,433.2
Operating Income (Loss)												841.8	631.9
Operating segment | Global Institutional and Specialty | Purchase Price Adjustments | Changes in Currency Rates
Net sales												20.6	18.9
Operating Income (Loss)												3.9	2.1
Operating segment | Global Institutional and Specialty | Purchase Price Adjustments | Segment Changes
Operating Income (Loss)												14.9	8.1
Operating segment | Global Healthcare and Life Sciences
Net sales									1,167.8			1,070.2	963.5
Operating Income (Loss)									220.4			210.4	197.3
Operating segment | Global Healthcare and Life Sciences | Previously Reported | Valued at 2023 fixed currency rates
Net sales												1,576.9	1,505.8
Operating Income (Loss)												160.0	193.3
Operating segment | Global Healthcare and Life Sciences | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												1,607.5	1,534.3
Operating Income (Loss)												160.8	193.4
Operating segment | Global Healthcare and Life Sciences | Purchase Price Adjustments | Changes in Currency Rates
Net sales												30.6	28.5
Operating Income (Loss)												7.5	4.2
Operating segment | Global Healthcare and Life Sciences | Purchase Price Adjustments | Segment Changes
Operating Income (Loss)												(6.7)	(4.1)
Operating segment | Global Pest Elimination
Net sales									7,857.2			7,640.5	7,172.6
Operating Income (Loss)									1,300.6			1,122.0	948.9
Operating segment | Global Pest Elimination | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												1,070.2	963.5
Operating Income (Loss)												210.4	197.3
Operating segment | Global Pest Elimination | Purchase Price Adjustments | Changes in Currency Rates
Net sales												8.7	8.1
Operating Income (Loss)												1.4	1.7
Operating segment | Global Pest Elimination | Purchase Price Adjustments | Segment Changes
Net sales												1,061.5	955.4
Operating Income (Loss)												209.0	195.6
Operating segment | Other | Previously Reported | Valued at 2023 fixed currency rates
Net sales												1,442.3	1,313.3
Operating Income (Loss)												255.0	209.9
Operating segment | Other | Purchase Price Adjustments | Segment Changes
Net sales												(1,442.3)	(1,313.3)
Operating Income (Loss)												(255.0)	(209.9)
Operating segment | Corporate
Net sales												42.7	89.2
Operating Income (Loss)									(15.8)			(332.8)	(414.3)
Currency impact
Net sales									(131.6)			(55.3)	(5.0)
Operating Income (Loss)									$ (32.7)			(9.9)	5.3
Currency impact | Previously Reported | Valued at 2023 fixed currency rates
Net sales												44.8	94.4
Operating Income (Loss)												5.3	16.2
Currency impact | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												(55.3)	(5.0)
Operating Income (Loss)												(9.9)	5.3
Currency impact | Purchase Price Adjustments | Changes in Currency Rates
Net sales												(100.1)	(99.4)
Operating Income (Loss)												(15.2)	(10.9)
Corporate | Previously Reported | Valued at 2023 fixed currency rates
Net sales												69.1	123.7
Operating Income (Loss)												(331.7)	(414.4)
Corporate | Previously Reported | Valued at 2024 Fixed Currency Rates
Net sales												42.7	89.2
Operating Income (Loss)												(332.8)	(414.3)
Corporate | Purchase Price Adjustments | Changes in Currency Rates
Net sales												0.1	0.1
Operating Income (Loss)												0.1	0.1
Corporate | Purchase Price Adjustments | Segment Changes
Net sales												(26.5)	$ (34.6)
Operating Income (Loss)												$ (1.2)