Revenue Recognition - Disaggregation of Total Revenues (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	$ 196	$ 188
Total revenues	1,590	1,451
TH
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	137	130
Total revenues	900	829
BK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	56	55
Total revenues	484	443
PLK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	3	3
Total revenues	168	148
FHS
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Property revenues	0	0
Total revenues	38	31
Sales
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	668	609
Total revenues	668	609
Sales | TH
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	618	566
Sales | BK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	19	16
Sales | PLK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	21	17
Sales | FHS
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	10	10
Royalties
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	442	403
Royalties | TH
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	77	69
Royalties | BK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	273	251
Royalties | PLK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	75	67
Royalties | FHS
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	17	16
Franchise fees and other revenue
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	30	24
Franchise fees and other revenue | TH
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	6	7
Franchise fees and other revenue | BK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	15	12
Franchise fees and other revenue | PLK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	3	1
Franchise fees and other revenue | FHS
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	6	4
Advertising revenues and other services
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	254	227
Total revenues	254	227
Advertising revenues and other services | TH
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	62	57
Advertising revenues and other services | BK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	121	109
Advertising revenues and other services | PLK
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	66	60
Advertising revenues and other services | FHS
Revenue Recognition, Multiple-deliverable Arrangements [Line Items]
Revenues	$ 5	$ 1