Intangible Assets, net and Goodwill - Schedule of Intangible Assets, Net and Goodwill (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross	$ 840	$ 847
Accumulated Amortization	(315)	(290)
Net	525	557
Intangible assets, net	10,415	10,563
Goodwill	5,571	5,651
Trade Names
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	9,890	10,006
Tim Hortons
Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	4,119	4,207
Tim Hortons | Trade Names
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	6,390	6,534
Burger King
Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	606	598
Burger King | Trade Names
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	2,145	2,117
Popeyes
Finite And Indefinite Lived Intangible Assets [Line Items]
Goodwill	846	846
Popeyes | Trade Names
Finite And Indefinite Lived Intangible Assets [Line Items]
Indefinite-lived intangible assets:	1,355	1,355
Franchise agreements
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross	724	720
Accumulated Amortization	(252)	(225)
Net	472	495
Favorable leases
Finite And Indefinite Lived Intangible Assets [Line Items]
Gross	116	127
Accumulated Amortization	(63)	(65)
Net	$ 53	$ 62