Environmental (Schedule of Environmental Remediation Reserves) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Environmental Remediation Obligations [Abstract]
Demerger obligations (Note 14)	$ 21	$ 14
Divestiture obligations (Note 14)	15	14
Active sites	24	23
U.S. Superfund sites	9	10
Other environmental remediation liabilities	2	2
Total	$ 71	$ 63
Environmental Loss Contingency, Statement of Financial Position [Extensible Enumeration]	Other liabilities, Other liabilities	Other liabilities, Other liabilities