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Revenue Recognition - Schedule Of Revenue By Revenue Source (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Disaggregation of Revenue [Line Items]
Net sales	$ 4,372	$ 3,685	$ 12,612	$ 10,077
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	1,756	1,484	5,088	4,269
Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	1,418	1,171	4,126	3,158
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	758	672	2,170	1,697
Latin America
Disaggregation of Revenue [Line Items]
Net sales	440	358	1,228	953
Performance Coatings Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	2,758	2,251	7,826	6,328
Performance Coatings Segment [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	1,177	958	3,374	2,825
Performance Coatings Segment [Member] | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	965	789	2,746	2,140
Performance Coatings Segment [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	325	274	913	728
Performance Coatings Segment [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	291	230	793	635
Industrial Coatings Segment [Member]
Disaggregation of Revenue [Line Items]
Net sales	1,614	1,434	4,786	3,749
Industrial Coatings Segment [Member] | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	579	526	1,714	1,444
Industrial Coatings Segment [Member] | Europe, Middle East and Africa ("EMEA")
Disaggregation of Revenue [Line Items]
Net sales	453	382	1,380	1,018
Industrial Coatings Segment [Member] | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales	433	398	1,257	969
Industrial Coatings Segment [Member] | Latin America
Disaggregation of Revenue [Line Items]
Net sales	$ 149	$ 128	$ 435	$ 318
Revenue from Contract with Customer | Service | Revenue from Rights Concentration Risk
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue	5.00%	5.00%	5.00%	5.00%

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