Revenue Recognition - Schedule Of Revenue By Revenue Source (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2024 USD ($)
Disaggregation of Revenue [Line Items]
Net sales	$ 4,082	$ 4,032	$ 11,961	$ 12,116
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	1,374	1,387	4,153	4,147
EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,375	1,366	4,081	4,179
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	768	750	2,142	2,140
Latin America
Disaggregation of Revenue [Line Items]
Net sales	565	529	1,585	1,650
Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	1,414	1,373	4,191	3,975
Performance Coatings | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	812	799	2,472	2,301
Performance Coatings | EMEA
Disaggregation of Revenue [Line Items]
Net sales	332	320	974	946
Performance Coatings | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	243	228	666	641
Performance Coatings | Latin America
Disaggregation of Revenue [Line Items]
Net sales	27	26	79	87
Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	1,656	1,655	4,883	5,101
Industrial Coatings | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	562	588	1,681	1,846
Industrial Coatings | EMEA
Disaggregation of Revenue [Line Items]
Net sales	417	411	1,282	1,359
Industrial Coatings | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	470	464	1,326	1,324
Industrial Coatings | Latin America
Disaggregation of Revenue [Line Items]
Net sales	207	192	594	572
Global Architectural Coatings
Disaggregation of Revenue [Line Items]
Net sales	1,012	1,004	2,887	3,040
Global Architectural Coatings | EMEA
Disaggregation of Revenue [Line Items]
Net sales	626	635	1,825	1,874
Global Architectural Coatings | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	55	58	150	175
Global Architectural Coatings | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 331	$ 311	$ 912	$ 991
Revenue from Contract with Customer | Service | Product Concentration Risk
Disaggregation of Revenue [Line Items]
Revenue, percentage of total revenue	0.05	0.05	0.05	0.05