Reportable Business Segment Information (Segment Net Sales and Income) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	$ 4,691		$ 4,359	$ 8,999	$ 8,240
Segment income (loss)	602		644	1,061	1,275
Corporate	(55)		(52)	(107)	(104)
Interest expense, net of interest income	(27)		(25)	(48)	(49)
Impairment and other related charges, net	60	$ (290)	0	(230)	0
Business restructuring-related costs, net	(8)		19	(22)	15
Acquisition-related costs	(6)		(14)	(10)	(38)
Environmental remediation charges	0		(10)	0	(26)
Expenses incurred due to a natural disaster	0		(5)	0	(17)
Decrease in allowance for doubtful accounts related to COVID-19	0		14	0	14
Income from legal settlements	0		22	0	22
Income before income taxes	566		593	644	1,092
Performance Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	2,929		2,749	5,499	5,068
Segment income (loss)	446		454	765	840
Industrial Coatings
Segment Reporting, Revenue Reconciling Item [Line Items]
Net sales	1,762		1,610	3,500	3,172
Segment income (loss)	$ 156		$ 190	$ 296	$ 435

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