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Reportable Business Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 4,311	$ 4,380
Segment income (loss)	651	635
Corporate	(83)	(67)
Interest expense, net of interest income	(13)	(34)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	(190)
Insurance recovery of expenses incurred due to a natural disaster	0	9
Business restructuring-related costs, net	(11)	0
Acquisition-related costs	(6)	0
Income before income taxes	538	353
Performance Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,614	2,628
Segment income (loss)	402	395
Industrial Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,697	1,752
Segment income (loss)	$ 249	$ 240

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