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Goodwill and Other Intangible Assets, net (Other Intangible Assets Disclosure) (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]    
Indefinite-lived intangible assets $ 11,676 $ 11,846
Definite-lived intangible assets 1,275 654
Total other intangible assets 12,951 12,500
Definite-lived intangible assets, accumulated amortization $ 264 $ 221