Reportable Business Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended				9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 4,644	$ 4,468			$ 13,896	$ 13,467
Segment income (loss)	698	554			2,120	1,615
Corporate	(88)	(59)			(240)	(166)
Interest expense, net of interest income	(25)	(32)			(94)	(80)
Defined Benefit Plan, Net Periodic Benefit Cost (Credit), Gain (Loss) Due to Settlement	0	0			(190)	0
Insurance recovery of expenses incurred due to a natural disaster	0	0			9	0
Impairment and other related charges, net	0	0	$ 60	$ (290)	0	(230)
Business restructuring-related costs, net	(13)	(45)			(27)	(67)
Acquisition-related costs	(15)	0			(22)	(10)
Income before income taxes	557	418			1,556	1,062
Performance Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,880	2,705			8,549	8,204
Segment income (loss)	452	362			1,384	1,127
Industrial Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,764	1,763			5,347	5,263
Segment income (loss)	$ 246	$ 192			$ 736	$ 488