Other (Income) Expense (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended	12 Months Ended
		Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Other Income and Expenses [Line Items]
Foreign currency transaction (gain) loss and other (income) expense, before tax	[1]				$ (18)	$ (1)	$ 1
Impairment and closure expense	[2]				172	5	6
Other (income) expense					154	4	$ 7
Other Income and Expenses [Domain]
Other Income and Expenses [Line Items]
Business Combination, Contingent Consideration Arrangements, Change in Amount of Contingent Consideration, Liability						$ 8
Finite-Lived Intangible Assets [Member]
Other Income and Expenses [Line Items]
Impairment and closure expense					11
Property, Plant and Equipment [Member]
Other Income and Expenses [Line Items]
Impairment and closure expense					12
Goodwill [Member]
Other Income and Expenses [Line Items]
Impairment and closure expense		$ 0	$ 5	$ 139	$ 144

[1] The year ended December 31, 2019, includes a charge of $8 million for the settlement of contingent consideration associated with our 2013 acquisition of the KFC Turkey and Pizza Hut Turkey businesses.

[2] The year ended December 31, 2020, includes a charge of $144 million related to the impairment of Habit Burger Grill goodwill. The year ended December 31, 2020, also includes charges of $12 million related to the impairment of restaurant-level assets and charges of $11 million related to the write-off of software no longer being used.