Segment Reporting - Reconciliation of Segment Income to Net Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	$ 588	$ 530
Impact of equity method investments	7	13
Other operating expenses (income), net	17	(16)
EBITDA	493	499
Depreciation and amortization	46	49
Income from operations	447	450
Interest expense, net	142	127
Income tax expense	28	53
Net income	277	270
Unallocated Management G&A
Segment Reporting, Revenue Reconciling Item [Line Items]
Share-based compensation and non-cash incentive compensation expense	45	27
Corporate restructuring and tax advisory fees	5	3
Impact of equity method investments	9	16
Other operating expenses (income), net	17	(16)
Unallocated Management G&A | Firehouse Subs brand
Segment Reporting, Revenue Reconciling Item [Line Items]
FHS Transaction costs	19	1
TH | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	251	231
BK | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	256	229
PLK | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	66	56
FHS | Operating Segments
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	$ 15	$ 14