Goodwill and Other Intangible Assets, net (Other Intangible Assets Disclosure) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]
Indefinite-lived intangible assets	$ 11,846	$ 11,846
Definite-lived intangible assets	1,090	654
Accumulated Amortization	248	221
Total other intangible assets	$ 12,936	$ 12,500