Goodwill and Other Identifiable Intangible Assets (Carrying Amount of Goodwill) (Details) $ in Millions	6 Months Ended
Jun. 30, 2021 USD ($)
Goodwill [Roll Forward]
Beginning Balance	$ 5,102
Acquisitions	(1,200)
Currency	(69)
Ending Balance	6,233
Performance Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	4,023
Acquisitions	(1,089)
Currency	(54)
Ending Balance	5,058
Industrial Coatings [Member]
Goodwill [Roll Forward]
Beginning Balance	1,079
Acquisitions	(111)
Currency	(15)
Ending Balance	$ 1,175

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 (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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