Goodwill and Intangible Assets, Net Definite-lived and Indefinite-lived Intangible Assets Table (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Definite-lived intangible assets:
Finite-Lived Intangible Assets, Gross	$ 671	$ 713
Finite-Lived Intangible Assets, Accumulated Amortization	(302)	(274)
Definite-lived intangible assets, net	369	439
Indefinite-lived intangible assets	62	62
Intangible assets, net	431	501
Customer Relationships [Member]
Definite-lived intangible assets:
Finite-Lived Intangible Assets, Gross	397	397
Finite-Lived Intangible Assets, Accumulated Amortization	(155)	(135)
Definite-lived intangible assets, net	242	262
Unclassified Indefinite-lived Intangible Assets [Member]
Definite-lived intangible assets:
Finite-Lived Intangible Assets, Gross	274	316
Finite-Lived Intangible Assets, Accumulated Amortization	(147)	(139)
Definite-lived intangible assets, net	$ 127	$ 177