Reportable Business Segment Information (Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024	Sep. 30, 2024
Segment Reporting Information [Line Items]
Assets	$ 22,144	$ 19,433	$ 21,858
Equity method investments	156		147
Operating Segments
Segment Reporting Information [Line Items]
Assets	18,611		17,928
Equity method investments	74		66
Operating Segments \| Global Architectural Coatings
Segment Reporting Information [Line Items]
Assets	6,754		6,483
Equity method investments	24		21
Operating Segments \| Performance Coatings Segment
Segment Reporting Information [Line Items]
Assets	6,187		5,816
Equity method investments	28		25
Operating Segments \| Industrial Coatings Segment
Segment Reporting Information [Line Items]
Assets	5,670		5,629
Equity method investments	22		20
Corporate / Non-Segment Items
Segment Reporting Information [Line Items]
Assets	3,533		3,930
Equity method investments	$ 82		$ 81

Amount of asset recognized for present right to economic benefit.

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+ Details

- Definition

This item represents the carrying amount on the entity's balance sheet of its investment in common stock of an equity method investee. This is not an indicator of the fair value of the investment, rather it is the initial cost adjusted for the entity's share of earnings and losses of the investee, adjusted for any distributions (dividends) and other than temporary impairment (OTTI) losses recognized.

+ References + Details

PPG INDUSTRIES INC 10-Q