Equity Method Investments - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 152		$ 167
Equity Method Investee
Schedule of Equity Method Investments [Line Items]
Accounts receivable from equity method investments	45		$ 42
Carrols Restaurant Group, Inc.
Schedule of Equity Method Investments [Line Items]
Quoted market price	$ 21
BK Brasil
Schedule of Equity Method Investments [Line Items]
Ownership percentage	9.40%
Quoted market price	$ 24
TH International Limited
Schedule of Equity Method Investments [Line Items]
Ownership percentage	4.20%
Quoted market price	$ 28
Wendy's Company TIMWEN Partnership | Tim Hortons brand
Schedule of Equity Method Investments [Line Items]
Cash distributions	2	$ 3
Rent expense	$ 4	$ 4
United States | Carrols Restaurant Group, Inc.
Schedule of Equity Method Investments [Line Items]
Ownership percentage	15.10%
Canada | Wendy's Company TIMWEN Partnership
Schedule of Equity Method Investments [Line Items]
Ownership percentage	50.00%