Supplemental Financial Information - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenues:
Franchise and property revenues	$ 642		$ 811		$ 1,364	$ 1,555
Total revenues	1,048		1,400		2,273	2,666
Operating costs and expenses:
Cost of sales	339		453		738	859
Franchise and property expenses	134		135		260	268
Selling, general and administrative expenses	295		316		620	628
(Income) loss from equity method investments	16		2		18	0
Other operating expenses (income), net	21		3		5	(14)
Total operating costs and expenses	805		909		1,641	1,741
Income from operations	243		491		632	925
Interest expense, net	128		137		247	269
Income before income taxes	115		354		385	656
Income tax (benefit) expense	(49)		97		(3)	153
Net income	164		257		388	503
Equity in earnings of consolidated subsidiaries	0		0		0	0
Net income	164	$ 224	257	$ 246	388	503
Comprehensive income (loss) attributable to noncontrolling interests	1		0		1	0
Net income attributable to common unitholders	163		257		387	503
Comprehensive income (loss)	313		362		(6)	656
Eliminations
Revenues:
Franchise and property revenues	0		0		0	0
Total revenues	0		0		0	0
Operating costs and expenses:
Cost of sales	0		0		0	0
Franchise and property expenses	0		0		0	0
Selling, general and administrative expenses	0		0		0	0
(Income) loss from equity method investments	0		0		0	0
Other operating expenses (income), net	0		0		0	0
Total operating costs and expenses	0		0		0	0
Income from operations	0		0		0	0
Interest expense, net	0		0		0	0
Income before income taxes	0		0		0	0
Income tax (benefit) expense	0		0		0	0
Net income	0		0		0	0
Equity in earnings of consolidated subsidiaries	(164)		(257)		(388)	(503)
Net income	(164)		(257)		(388)	(503)
Comprehensive income (loss) attributable to noncontrolling interests	(1)		0		(1)	0
Net income attributable to common unitholders	(163)		(257)		(387)	(503)
Comprehensive income (loss)	(313)		(362)		6	(656)
Consolidated Borrowers | Reportable Legal Entities
Revenues:
Franchise and property revenues	642		811		1,364	1,555
Total revenues	1,048		1,400		2,273	2,666
Operating costs and expenses:
Cost of sales	339		453		738	859
Franchise and property expenses	134		135		260	268
Selling, general and administrative expenses	295		316		620	628
(Income) loss from equity method investments	16		2		18	0
Other operating expenses (income), net	21		3		5	(14)
Total operating costs and expenses	805		909		1,641	1,741
Income from operations	243		491		632	925
Interest expense, net	128		137		247	269
Income before income taxes	115		354		385	656
Income tax (benefit) expense	(49)		97		(3)	153
Net income	164		257		388	503
Equity in earnings of consolidated subsidiaries	0		0		0	0
Net income	164		257		388	503
Comprehensive income (loss) attributable to noncontrolling interests	1		0		1	0
Net income attributable to common unitholders	163		257		387	503
Comprehensive income (loss)	313		362		(6)	656
RBILP | Reportable Legal Entities
Revenues:
Franchise and property revenues	0		0		0	0
Total revenues	0		0		0	0
Operating costs and expenses:
Cost of sales	0		0		0	0
Franchise and property expenses	0		0		0	0
Selling, general and administrative expenses	0		0		0	0
(Income) loss from equity method investments	0		0		0	0
Other operating expenses (income), net	0		0		0	0
Total operating costs and expenses	0		0		0	0
Income from operations	0		0		0	0
Interest expense, net	0		0		0	0
Income before income taxes	0		0		0	0
Income tax (benefit) expense	0		0		0	0
Net income	0		0		0	0
Equity in earnings of consolidated subsidiaries	164		257		388	503
Net income	164		257		388	503
Comprehensive income (loss) attributable to noncontrolling interests	1		0		1	0
Net income attributable to common unitholders	163		257		387	503
Comprehensive income (loss)	313		362		(6)	656
Sales
Revenues:
Sales	406		589		909	1,111
Sales | Eliminations
Revenues:
Sales	0		0		0	0
Sales | Consolidated Borrowers | Reportable Legal Entities
Revenues:
Sales	406		589		909	1,111
Sales | RBILP | Reportable Legal Entities
Revenues:
Sales	$ 0		$ 0		$ 0	$ 0