Segment Information (Total Assets) (Details) - USD ($) $ in Millions	Jun. 30, 2026	Dec. 31, 2025
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 19,439	$ 19,961
Equity method investments	1,028	1,062
Operating Segments
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	17,570	17,004
Operating Segments \| Performance and Essential Materials Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	12,280	12,091
Operating Segments \| Housing and Infrastructure Products Segment
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,290	4,913
Corporate and other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 1,869	$ 2,957

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