Shareholders' Equity (Schedule of Accumulated Other Comprehensive Income (Loss)) (Details) - USD ($) $ in Millions	Sep. 30, 2025	Dec. 31, 2024
Stockholders' Equity Note [Abstract]
Defined benefit and other postretirement liability adjustments	$ (237)	$ (234)
Cumulative translation adjustments	(80)	(82)
Other	(37)	(37)
Total accumulated other comprehensive loss	(354)	(353)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income Loss Other Net Of Tax	$ (37)	$ (37)