Segment Reporting - Reconciliation of Segment Income to Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2023	Jun. 30, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	$ 665		$ 618		$ 1,253	$ 1,148
Impact of equity method investments	11		9		18	22
Other operating expenses (income), net	(7)		(25)		10	(41)
EBITDA	603		589		1,096	1,088
Depreciation and amortization	49		48		95	97
Income from operations	554		541		1,001	991
Interest expense, net	145		129		287	256
Income tax expense	58		66		86	119
Net income	351	$ 277	346	$ 270	628	616
Unallocated Management G&A
Segment Reporting, Revenue Reconciling Item [Line Items]
Share-based compensation and non-cash incentive compensation expense	47		32		92	59
Corporate restructuring and advisory fees	7		6		12	9
Impact of equity method investments	15		12		24	28
Other operating expenses (income), net	(7)		(25)		10	(41)
Unallocated Management G&A | Firehouse Subs brand
Segment Reporting, Revenue Reconciling Item [Line Items]
FHS Transaction costs	0		4		19	5
TH | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	290		274		541	505
BK | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	288		270		544	499
PLK | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	73		61		139	117
FHS | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	$ 14		$ 13		$ 29	$ 27