Items Affecting Comparability of Net Income and Cash Flows (Details) shares in Millions, $ in Millions			3 Months Ended							5 Months Ended		6 Months Ended		7 Months Ended		12 Months Ended			18 Months Ended
		Jun. 01, 2021 USD ($) Rate	Dec. 31, 2021 USD ($) restaurants Rate	Sep. 30, 2021 USD ($)	Jun. 30, 2021 USD ($) Rate	Mar. 31, 2021 USD ($) Rate	Dec. 31, 2020 USD ($) restaurants Rate	Sep. 30, 2020 USD ($)	Jun. 30, 2020 USD ($)	Jun. 09, 2021 Rate	Dec. 31, 2020 USD ($) restaurants Rate	Jun. 30, 2021	Jun. 30, 2018 USD ($) shares	Dec. 31, 2021 USD ($) restaurants Rate	Jul. 21, 2020	Dec. 31, 2021 USD ($) restaurants Rate	Dec. 31, 2020 USD ($) restaurants Rate	Dec. 31, 2019 USD ($) restaurants	Dec. 31, 2021 USD ($) restaurants Rate
Facility Actions [Line Items]
Proceeds from Divestiture of Businesses, Including Noncash Consideration																$ 85	$ 19	$ 110
Noncash or Part Noncash Divestiture, Amount of Consideration Received	[1]															0	31	6
Refranchising (gain) loss																(35)	(34)	(37)
Charitable Contribution, Authorized Spend																			$ 100
General and administrative expenses																$ 1,060	$ 1,064	917
Equity Method Investment, Ownership Percentage | Rate			5.00%				5.00%				5.00%			5.00%		5.00%	5.00%		5.00%
Approximate Number Of System Units | restaurants			53,000											53,000		53,000			53,000
Investment Owned, at Fair Value			$ 118				$ 31				$ 31			$ 118		$ 118	$ 31		$ 118
Investment Income, Nonoperating																87
Debt Related Commitment Fees and Debt Issuance Costs						$ 4
Write off of Deferred Debt Issuance Cost						8
Payments for (Proceeds from) Investments						$ (44)		$ 206								0	(206)	0
Investment (income) expense, net	[2]															86	74	(67)
Deferred income taxes																$ 200	$ 65	$ 232
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent																(3.80%)	(2.50%)	0.00%
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability					$ 64
Number of stores refranchised
Facility Actions [Line Items]
Approximate Number Of System Units | restaurants							60				60						60
Subsidiary Senior Unsecured Notes [Member] | Unsecured Debt [Member]
Facility Actions [Line Items]
Write off of Deferred Debt Issuance Cost																$ 6	$ 6
Repayments of Debt, Maturing in More than Three Months		$ 1,050															$ 1,050
Interest rate, stated (in hundredths) | Rate		5.25%					5.00%				5.00%						5.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed | Rate		102.625%
Payment for Debt Extinguishment or Debt Prepayment Cost																$ 28	$ 28
Gain (Loss) on Extinguishment of Debt																	(26)
Foreign [Member]
Facility Actions [Line Items]
Effective Income Tax Rate Reconciliation, Change in Enacted Tax Rate, Percent				19.00%	25.00%	19.00%				19.00%	19.00%	17.00%		25.00%	17.00%
Unlocking Opportunity Initiative [Member]
Facility Actions [Line Items]
General and administrative expenses									$ 50
COVID-19 Relief [Member]
Facility Actions [Line Items]
General and administrative expenses							$ 25
Interest Expense [Member] | Subsidiary Senior Unsecured Notes [Member] | Unsecured Debt [Member]
Facility Actions [Line Items]
Gain (Loss) on Extinguishment of Debt																	$ (2)
Gain (loss) on disposition of assets [Member]
Facility Actions [Line Items]
Number of Restaurants Refranchised | restaurants																83	97	25
General and Administrative Expense [Member]
Facility Actions [Line Items]
Costs Associated with Resource Optimization Initiative																$ 7	$ 36
Other pension (income) expense [Member]
Facility Actions [Line Items]
Costs Associated with Resource Optimization Initiative																1	2
Other Operating Income (Expense)
Facility Actions [Line Items]
Costs Associated with Resource Optimization Initiative																2
KFC Global Division [Member]
Facility Actions [Line Items]
Refranchising (gain) loss																(1)	(33)	$ (6)
Pizza Hut Global Division [Member]
Facility Actions [Line Items]
Refranchising (gain) loss																1	1	0
Taco Bell Global Division [Member]
Facility Actions [Line Items]
Refranchising (gain) loss																(29)	(2)	(31)
The Habit Burger Grill Global Division
Facility Actions [Line Items]
Refranchising (gain) loss																(6)	0	0
GrubHub Inc. [Member]
Facility Actions [Line Items]
Investment Owned, Balance, Shares | shares													2.8
Payments for (Proceeds from) Investments													$ 200
Investment (income) expense, net																	(69)	77
Intra-Entity IP Transfers [Member]
Facility Actions [Line Items]
Deferred income taxes																	3	$ 226
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability			$ 35	$ 152												$ 152	$ (25)

[1] In 2020 we received as refranchising consideration a minority interest in an entity (Devyani) that operates KFC and Pizza Hut franchised units in India (see Note 5) and in 2019 we received as refranchising consideration a minority interest in an entity that owns our KFC and Pizza Hut master franchisee rights in Brazil.

[2] Amounts have not been allocated to any segment for performance reporting purposes.