Segment Information (Total Assets) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 21,396	$ 20,550
Operating Segments | Performance and Essential Materials
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	13,990	13,978
Operating Segments | Housing and Infrastructure Products
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	5,085	5,022
Corporate and other
Segment Reporting, Asset Reconciling Item [Line Items]
Total assets	$ 2,321	$ 1,550