Earnings Per Common Share ("EPS") (Details) - USD ($) $ / shares in Units, shares in Millions, $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Net Income - YUM! Brands, Inc.		$ 321	$ 206	$ 754	$ 486
Weighted-average common shares outstanding (for basic calculation)		324.0	350.0	328.0	354.0
Effect of dilutive share-based employee compensation		7.0	8.0	8.0	7.0
Weighted-average common and dilutive potential common shares outstanding (for diluted calculation)		331.0	358.0	336.0	361.0
Basic EPS		$ 0.99	$ 0.59	$ 2.30	$ 1.37
Diluted EPS		$ 0.97	$ 0.58	$ 2.25	$ 1.34
Unexercised employee stock options and stock appreciation rights (in millions) excluded from the diluted EPS computation	[1]	2.3	2.7	1.8	2.3

[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.