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Intangible Assets (Total Book Value of Intangible Assets ) (Details) - USD ($)
$ in Millions
Dec. 31, 2024
Dec. 31, 2023
Intangible assets and goodwill [abstract]    
Intangible assets having a defined useful life $ 294 $ 311
Intangible assets having an indefinite useful life 575 562
Total intangible assets $ 869 $ 873