Significant Accounting Policies and Pronouncements (Narrative) (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Property, Plant and Equipment, Useful Life	40 years
Property, Plant and Equipment, Gross	$ 325	$ 279
Values Of Business Acquired Distribution Agreements And Customer Relationships	0	6
Capitalized Computer Software, Net	$ 125	$ 137
Value of Customer Relationships Acquired [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years
Value of Distribution Agreements [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life	15 years