Equity Method Investments - Summary of Franchise and Property Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Revenues from affiliates:
Property revenues	$ 215	$ 192	$ 628	$ 560
Total revenues	1,458	1,375	4,124	3,972
Affiliates
Revenues from affiliates:
Property revenues	8	8	25	26
Total revenues	98	87	286	251
Royalties
Revenues from affiliates:
Revenues	602	557	1,706	1,611
Royalties | Affiliates
Revenues from affiliates:
Revenues	89	76	254	218
Franchise fees and other revenue
Revenues from affiliates:
Revenues	17	17	55	58
Franchise fees and other revenue | Affiliates
Revenues from affiliates:
Revenues	$ 1	$ 3	$ 7	$ 7