Revenue Recognition - Disaggregation of total revenues (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	$ 203	$ 158	$ 385	$ 336
Total revenues	1,438	1,048	2,698	2,273
Sales
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Sales	590	406	1,097	909
Royalties
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Sales	391	277	737	606
Franchise fees and other revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Sales	20	15	40	33
Advertising revenues
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Sales	234	192	439	389
Total revenues	$ 234	$ 192	$ 439	$ 389