Goodwill and Intangible Assets - Schedule of Intangible Assets by Type (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	$ 5,994	$ 6,022
Finite-lived intangible assets, accumulated amortization	(2,855)	(2,525)
Finite-lived intangible assets, net	3,139	3,497
Indefinite-lived intangible assets	2,242	2,222
Intangible assets, gross	8,236	8,244
Other intangible assets, net	5,381	5,719
Technology
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	1,075	1,107
Finite-lived intangible assets, accumulated amortization	(626)	(526)
Finite-lived intangible assets, net	449	581
Customer relationships
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	3,027	3,085
Finite-lived intangible assets, accumulated amortization	(1,045)	(944)
Finite-lived intangible assets, net	1,982	2,141
Capitalized software
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	1,193	1,118
Finite-lived intangible assets, accumulated amortization	(928)	(824)
Finite-lived intangible assets, net	265	294
Trade names and trademarks
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	696	698
Finite-lived intangible assets, accumulated amortization	(254)	(229)
Finite-lived intangible assets, net	442	469
Other
Finite-Lived Intangible Assets, Net [Abstract]
Finite-lived intangible assets, gross	3	14
Finite-lived intangible assets, accumulated amortization	(2)	(2)
Finite-lived intangible assets, net	$ 1	$ 12