REPORTABLE SEGMENT INFORMATION - Reportable Segment Information (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Net sales	$ 5,872.3	$ 5,379.8	$ 10,871.0	$ 10,035.8
Segment profit	960.7	994.9	1,615.5	1,762.4
Interest expense	(92.9)	(83.5)	(181.3)	(166.7)
Administrative expenses and other	(127.9)	(92.2)	(233.2)	(267.5)
Income before income taxes	739.9	819.2	1,201.0	1,328.2
Administrative
Segment Reporting Information [Line Items]
Net sales	1.0	0.4	2.1	0.9
Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	(1,551.9)	(1,137.5)	(2,810.7)	(2,153.5)
Administrative and Eliminations
Segment Reporting Information [Line Items]
Net sales	(1,550.9)	(1,137.1)	(2,808.6)	(2,152.6)
Interest expense	(92.9)	(83.5)	(181.3)	(166.7)
Administrative expenses and other	(127.9)	(92.2)	(233.2)	(267.5)
Income before income taxes	(220.8)	(175.7)	(414.5)	(434.2)
The Americas Group
Segment Reporting Information [Line Items]
Net sales	3,343.1	3,093.4	5,987.2	5,596.5
The Americas Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	3,343.1	3,093.4	5,987.2	5,596.5
Segment profit	700.4	727.3	1,145.8	1,207.3
Income before income taxes	700.4	727.3	1,145.8	1,207.3
Consumer Brands Group
Segment Reporting Information [Line Items]
Net sales	737.9	731.5	1,437.3	1,509.6
Consumer Brands Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,236.5	1,831.1	4,142.4	3,593.2
Segment profit	63.5	122.8	128.4	266.5
Income before income taxes	63.5	122.8	128.4	266.5
Consumer Brands Group | Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	1,498.6	1,099.6	2,705.1	2,083.6
Performance Coatings Group
Segment Reporting Information [Line Items]
Net sales	1,790.3	1,554.5	3,444.4	2,928.8
Performance Coatings Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,843.6	1,592.4	3,550.0	2,998.7
Segment profit	196.8	144.8	341.3	288.6
Income before income taxes	196.8	144.8	341.3	288.6
Performance Coatings Group | Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	$ 53.3	$ 37.9	$ 105.6	$ 69.9