Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions	Mar. 31, 2026	Dec. 31, 2025
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 14)	$ 14	$ 24
Divestiture obligations (Note 14)	18	15
Active sites	23	23
U.S. Superfund sites	9	9
Other environmental remediation liabilities	2	2
Total	$ 66	$ 73
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other liabilities, Other liabilities	Other liabilities, Other liabilities