Goodwill and Intangible Assets (Details) - USD ($) $ in Millions		3 Months Ended
		Mar. 31, 2021	Dec. 31, 2020
Goodwill [Line Items]
Goodwill, gross		$ 1,220	$ 1,223
Accumulated impairment losses	[1]	(391)	(391)
Goodwill, net		829	832
Effect of currency translation adjustment		(3)
KFC [Member]
Goodwill [Line Items]
Goodwill, gross		745	748
Goodwill, net		745	748
Effect of currency translation adjustment		(3)
Pizza Hut [Member]
Goodwill [Line Items]
Goodwill, gross		20	20
Goodwill, net		20	20
All Other Segments [Member]
Goodwill [Line Items]
Goodwill, gross		455	455
Accumulated impairment losses	[1]	(391)	(391)
Goodwill, net		$ 64	$ 64

[1] Accumulated impairment losses represent goodwill impairment attributable to the reporting units of Little Sheep and Daojia.