REPORTABLE SEGMENT INFORMATION - Reportable Segment Information (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Segment Reporting Information [Line Items]
Net sales	$ 4,604.0	$ 4,877.8	$ 8,750.7	$ 8,918.7
Segment profit	934.5	903.4	1,520.0	1,421.1
Interest expense	(88.1)	(89.2)	(174.3)	(180.2)
Administrative expenses and other	(99.0)	(138.5)	(206.0)	(266.3)
Income before income taxes	747.4	675.7	1,139.7	974.6
Administrative
Segment Reporting Information [Line Items]
Net sales	0.3	0.3	1.6	1.0
Administrative and Eliminations
Segment Reporting Information [Line Items]
Net sales	(919.2)	(1,011.0)	(1,820.4)	(1,831.6)
Interest expense	(88.1)	(89.2)	(174.3)	(180.2)
Administrative expenses and other	(99.0)	(138.5)	(206.0)	(266.3)
Income before income taxes	(187.1)	(227.7)	(380.3)	(446.5)
Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	919.5	1,011.3	1,822.0	1,832.6
The Americas Group
Segment Reporting Information [Line Items]
Net sales	2,523.7	2,756.0	4,829.2	4,910.9
The Americas Group \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	2,523.7	2,756.0	4,829.2	4,910.9
Segment profit	599.7	612.4	988.0	943.5
Income before income taxes	599.7	612.4	988.0	943.5
Consumer Brands Group
Segment Reporting Information [Line Items]
Net sales	980.2	804.5	1,602.5	1,459.0
Consumer Brands Group \| Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	(875.2)	(981.0)	(1,745.7)	(1,773.8)
Consumer Brands Group \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,855.4	1,785.5	3,348.2	3,232.8
Segment profit	237.4	140.7	320.9	228.6
Income before income taxes	237.4	140.7	320.9	228.6
Performance Coatings Group
Segment Reporting Information [Line Items]
Net sales	1,099.8	1,317.0	2,317.4	2,547.8
Performance Coatings Group \| Intersegment transfers
Segment Reporting Information [Line Items]
Net sales	(44.3)	(30.3)	(76.3)	(58.8)
Performance Coatings Group \| Operating Segments
Segment Reporting Information [Line Items]
Net sales	1,144.1	1,347.3	2,393.7	2,606.6
Segment profit	97.4	150.3	211.1	249.0
Income before income taxes	$ 97.4	$ 150.3	$ 211.1	$ 249.0

The aggregate total of expenses of managing and administering the affairs of an entity, including affiliates of the reporting entity, which are not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

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