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Significant Accounting Policies and Pronouncements (Narrative) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
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Finite-Lived Intangible Assets [Line Items] |  |
Property, Plant and Equipment, Useful Life | 40 years |
Property, Plant and Equipment, Gross | $ 279 | $ 270
Values Of Business Acquired Distribution Agreements And Customer Relationships | 6 | 12
Capitalized Computer Software, Net | $ 137 | $ 138
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 |

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