Equity Method Investments - Summary of Franchise and Property Revenues (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues from affiliates:
Total revenues	$ 1,337	$ 1,458	$ 3,610	$ 4,124
Affiliates
Revenues from affiliates:
Property revenues	8	8	24	25
Total revenues	94	98	243	286
Royalties
Revenues from affiliates:
Sales	581	602	1,576	1,706
Royalties | Affiliates
Revenues from affiliates:
Sales	82	89	209	254
Franchise fees and other revenue
Revenues from affiliates:
Sales	19	17	52	55
Franchise fees and other revenue | Affiliates
Revenues from affiliates:
Sales	$ 4	$ 1	$ 10	$ 7