Intangible Assets, net and Goodwill - Schedule of Intangible Assets, net and Goodwill (Details) - USD ($) $ in Millions	Mar. 31, 2023	Dec. 31, 2022
Finite-Lived Intangible Assets [Line Items]
Gross	$ 810	$ 810
Accumulated Amortization	(379)	(370)
Net	431	440
Indefinite-lived Intangible Assets [Line Items]
Intangible assets, net	11,005	10,991
Goodwill [Line Items]
Goodwill	5,700	5,688
Tim Hortons brand
Goodwill [Line Items]
Goodwill	4,069	4,059
Burger King brand
Goodwill [Line Items]
Goodwill	592	590
Popeyes brand
Goodwill [Line Items]
Goodwill	846	846
Firehouse Subs brand
Goodwill [Line Items]
Goodwill	193	193
Trade names
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	10,574	10,551
Trade names | Tim Hortons brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	6,308	6,292
Trade names | Burger King brand
Indefinite-lived Intangible Assets [Line Items]
Indefinite-lived intangible assets	2,095	2,088
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 agreements
Finite-Lived Intangible Assets [Line Items]
Gross	722	720
Accumulated Amortization	(322)	(313)
Net	400	407
Favorable leases
Finite-Lived Intangible Assets [Line Items]
Gross	88	90
Accumulated Amortization	(57)	(57)
Net	$ 31	$ 33