REPORTABLE SEGMENT INFORMATION - Reportable Segment Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 4,998.7	$ 4,656.0
Segment profit	654.8	767.5
Interest expense	(88.4)	(83.2)
Administrative expenses and other	(105.3)	(175.3)
Income before income taxes	461.1	509.0
Administrative
Segment Reporting Information [Line Items]
Net sales	1.1	0.5
Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	(1,258.8)	(1,016.0)
Administrative and Eliminations
Segment Reporting Information [Line Items]
Net sales	(1,257.7)	(1,015.5)
Interest expense	(88.4)	(83.2)
Administrative expenses and other	(105.3)	(175.3)
Income before income taxes	(193.7)	(258.5)
The Americas Group
Segment Reporting Information [Line Items]
Net sales	2,644.1	2,503.1
The Americas Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,644.1	2,503.1
Segment profit	445.4	480.0
Income before income taxes	445.4	480.0
Consumer Brands Group
Segment Reporting Information [Line Items]
Net sales	699.4	778.1
Consumer Brands Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,905.9	1,762.1
Segment profit	64.9	143.7
Income before income taxes	64.9	143.7
Consumer Brands Group | Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	1,206.5	984.0
Performance Coatings Group
Segment Reporting Information [Line Items]
Net sales	1,654.1	1,374.3
Performance Coatings Group | Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,706.4	1,406.3
Segment profit	144.5	143.8
Income before income taxes	144.5	143.8
Performance Coatings Group | Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	$ 52.3	$ 32.0