Other Income, Net (Details) - USD ($) $ in Millions		3 Months Ended			9 Months Ended
		Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Other Income And Expenses [Line Items]
Equity income from investments in unconsolidated affiliates		$ 10	$ 17		$ 37	$ 51
Gain from re-measurement of previously held equity interest	[1]	10	239		10	239
Amortization of reacquired franchise rights	[2]	(10)	(7)		(29)	(13)
Foreign exchange impact and other			7		(3)	8
Other income, net		$ 10	$ 256		$ 15	282
Daojia platform [Member]
Other Income And Expenses [Line Items]
Derecognition of indemnification assets				$ (3)		$ (3)	[3]

[1] As a result of the consolidation of the Lavazza joint venture and Suzhou KFC as disclosed in Note 6, the Company recognized a gain of $10 million and $239 million for the quarters and years to date ended September 30, 2021 and 2020, respectively, from the re-measurement of our previously held equity interest at fair value, which was not allocated to any segment for performance reporting purposes

[2] Increase in amortization of reacquired franchise rights resulted from the acquisition of Suzhou KFC as disclosed in Note 6, with $61 million of the purchase price allocated to intangible assets related to reacquired franchise rights, which is being amortized over the remaining franchise contract period.

[3] In the quarter ended June 30, 2020, the Company derecognized a $3 million indemnification asset previously recorded for the Daojia acquisition as the indemnification right pursuant to the purchase agreement expired. The expense was included in Other income, net, but was not allocated to any segment for performance reporting purposes.