Goodwill and Other Intangible Assets - Summary of Other Intangible Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Finite and indefinite-lived intangible assets [Line Items]
Finite & indefinite lived intangibles, gross	$ 1,781	$ 1,708
Finite-lived intangible assets, accumulated amortization, net	(440)	(395)
Intangible assets, net (excluding goodwill)	1,341	1,313
Amortization of intangible assets	35	33	$ 33
Finite-Lived Intangible Assets, Net, Amortization Expense, Fiscal Year Maturity [Abstract]
Future amortization expense - 2018	35
Future amortization expense - 2019	35
Future amortization expense - 2020	35
Future amortization expense - 2021	35
Future amortization expense - 2022	35
Indefinite life intangible assets
Finite and indefinite-lived intangible assets [Line Items]
Indefinite-lived intangible assets (excluding goodwill)	985	938
Trademarks
Finite and indefinite-lived intangible assets [Line Items]
Finite-lived intangible assets, gross	547	539
Finite-lived intangible assets, accumulated amortization, net	(337)	(317)
Finite-lived intangible assets, net	210	222
Other finite life intangible assets
Finite and indefinite-lived intangible assets [Line Items]
Finite-lived intangible assets, gross	249	231
Finite-lived intangible assets, accumulated amortization, net	(103)	(78)
Finite-lived intangible assets, net	$ 146	$ 153