Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill) (Details) $ in Millions	6 Months Ended
Jun. 30, 2020 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 4,470
Acquisitions	(20)
Currency	(183)
Ending Balance	4,307
Performance Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	3,442
Acquisitions	(4)
Currency	(164)
Ending Balance	3,282
Industrial Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	1,028
Acquisitions	(16)
Currency	(19)
Ending Balance	$ 1,025

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
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Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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