Revenue Recognition - Schedule Of Revenue By Revenue Source (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Disaggregation of Revenue [Line Items]
Net sales	$ 3,645	$ 3,817	$ 4,131	$ 3,781	$ 3,682	$ 3,776	$ 3,804	$ 3,486	$ 15,374	$ 14,748	$ 14,270
United States and Canada
Disaggregation of Revenue [Line Items]
Net sales									6,485	6,307	6,254
EMEA
Disaggregation of Revenue [Line Items]
Net sales									4,678	4,389	4,164
Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales									2,618	2,523	2,431
Latin America
Disaggregation of Revenue [Line Items]
Net sales									1,593	1,529	1,421
Performance Coatings
Disaggregation of Revenue [Line Items]
Net sales									9,087	8,730	8,580
Performance Coatings | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales									4,062	4,031	4,055
Performance Coatings | EMEA
Disaggregation of Revenue [Line Items]
Net sales									2,936	2,761	2,619
Performance Coatings | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales									1,071	970	959
Performance Coatings | Latin America
Disaggregation of Revenue [Line Items]
Net sales									1,018	968	947
Industrial Coatings
Disaggregation of Revenue [Line Items]
Net sales									6,287	6,018	5,690
Industrial Coatings | United States and Canada
Disaggregation of Revenue [Line Items]
Net sales									2,423	2,276	2,199
Industrial Coatings | EMEA
Disaggregation of Revenue [Line Items]
Net sales									1,742	1,628	1,545
Industrial Coatings | Asia Pacific
Disaggregation of Revenue [Line Items]
Net sales									1,547	1,553	1,472
Industrial Coatings | Latin America
Disaggregation of Revenue [Line Items]
Net sales									$ 575	$ 561	$ 474
Revenue from Contract with Customer | Service [Member]
Disaggregation of Revenue [Line Items]
Service revenue, percentage of total revenue									5.00%