Earnings Per Common Share ("EPS") (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Net Income - YUM! Brands, Inc.		$ 283	$ 255	$ 572	$ 806
Weighted-average common shares outstanding (for basic calculation)		303.0	306.0	302.0	307.0
Effect of dilutive share-based employee compensation		4.0	7.0	5.0	7.0
Weighted-average common and dilutive potential common shares outstanding (for diluted calculation)		307.0	313.0	307.0	314.0
Basic EPS		$ 0.94	$ 0.83	$ 1.89	$ 2.63
Diluted EPS		$ 0.92	$ 0.81	$ 1.86	$ 2.57
Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation	[1]	4.7	0.1	4.6	1.9

[1] These unexercised employee stock options and stock appreciation rights were not included in the computation of diluted EPS because to do so would have been antidilutive for the periods presented.