Intangible Assets, net and Goodwill - Intangible Assets, Net and Goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2024	Dec. 31, 2023
Finite-Lived Intangible Assets [Line Items]
Gross	$ 1,201	$ 808
Accumulated Amortization	(442)	(402)
Net	759	406
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net	11,347	11,107
Trade Names
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	10,588	10,701
Trade Names | Tim Hortons brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	6,305	6,423
Trade Names | Burger King brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	2,112	2,107
Trade Names | Popeyes brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	1,355	1,355
Trade Names | Firehouse Subs brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	816	816
Franchise Agreement
Finite-Lived Intangible Assets [Line Items]
Gross	725	727
Accumulated Amortization	(371)	(348)
Net	354	379
Reacquired franchise rights
Finite-Lived Intangible Assets [Line Items]
Gross	396	0
Accumulated Amortization	(14)	0
Net	382	0
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Gross	80	81
Accumulated Amortization	(57)	(54)
Net	$ 23	$ 27