Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill Attributable to Each Reportable Segment) (Detail) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Goodwill [Roll Forward]
Beginning Balance	$ 3,942	$ 3,572
Goodwill from acquisitions	235	112
Currency translation	(107)	258
Ending Balance	4,070	3,942
Performance Coatings
Goodwill [Roll Forward]
Beginning Balance	3,104	2,870
Goodwill from acquisitions	248	23
Currency translation	(86)	211
Ending Balance	3,266	3,104
Industrial Coatings Segment
Goodwill [Roll Forward]
Beginning Balance	838	702
Goodwill from acquisitions	(13)	89
Currency translation	(21)	47
Ending Balance	$ 804	$ 838

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.

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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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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