Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 14)	$ 19	$ 20
Divestiture obligations (Note 14)	14	14
Active sites	20	21
U.S. Superfund sites	9	10
Other environmental remediation liabilities	2	2
Total	$ 64	$ 67