Revenue Recognition - Schedule Of Revenue By Revenue Source (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Disaggregation of Revenue [Line Items]
Net sales	$ 3,817	$ 3,776	$ 11,729	$ 11,066
Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	2,289	2,290	6,947	6,606
Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	1,528	1,486	4,782	4,460
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales	1,634	1,605	5,011	4,828
United States and Canada | Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	1,028	1,063	3,175	3,118
United States and Canada | Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	606	542	1,836	1,710
EMEA
Disaggregation of Revenue [Line Items]
Net sales	1,138	1,133	3,597	3,309
EMEA | Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	741	735	2,259	2,104
EMEA | Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	397	398	1,338	1,205
Asia-Pacific
Disaggregation of Revenue [Line Items]
Net sales	652	648	1,962	1,839
Asia-Pacific | Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	272	250	791	708
Asia-Pacific | Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	380	398	1,171	1,131
Latin America
Disaggregation of Revenue [Line Items]
Net sales	393	390	1,159	1,090
Latin America | Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales	248	242	722	676
Latin America | Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales	$ 145	$ 148	$ 437	$ 414
Revenue from Contract with Customer | Service
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue			5.00%