Supplemental Financial Information - Condensed Consolidating Statements of Operations (Details) - USD ($) $ in Millions	3 Months Ended						9 Months Ended
	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Sep. 30, 2020	Sep. 30, 2019
Revenues:
Franchise and property revenues	$ 796			$ 834			$ 2,160	$ 2,389
Total revenues	1,337			1,458			3,610	4,124
Operating costs and expenses:
Cost of sales	418			475			1,156	1,334
Franchise and property expenses	128			133			388	401
Selling, general and administrative expenses	302			320			922	948
(Income) loss from equity method investments	18			(11)			36	(11)
Other operating expenses (income), net	54			(30)			59	(44)
Total operating costs and expenses	920			887			2,561	2,628
Income from operations	417			571			1,049	1,496
Interest expense, net	129			137			376	406
Loss on early extinguishment of debt	0			4			0	4
Income before income taxes	288			430			673	1,086
Income tax expense	65			79			62	232
Net income	223			351			611	854
Equity in earnings of consolidated subsidiaries	0			0			0	0
Net income	223	$ 164	$ 224	351	$ 257	$ 246	611	854
Comprehensive income (loss) attributable to noncontrolling interests	0			0			1	0
Net income attributable to common unitholders	223			351			610	854
Comprehensive income (loss)	269			301			263	957
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
Loss on early extinguishment of debt				0				0
Income before income taxes	0			0			0	0
Income tax expense	0			0			0	0
Net income	0			0			0	0
Equity in earnings of consolidated subsidiaries	(223)			(351)			(611)	(854)
Net income	(223)			(351)			(611)	(854)
Comprehensive income (loss) attributable to noncontrolling interests	0			0			(1)	0
Net income attributable to common unitholders	(223)			(351)			(610)	(854)
Comprehensive income (loss)	(269)			(301)			(263)	(957)
Consolidated Borrowers | Reportable Legal Entities
Revenues:
Franchise and property revenues	796			834			2,160	2,389
Total revenues	1,337			1,458			3,610	4,124
Operating costs and expenses:
Cost of sales	418			475			1,156	1,334
Franchise and property expenses	128			133			388	401
Selling, general and administrative expenses	302			320			922	948
(Income) loss from equity method investments	18			(11)			36	(11)
Other operating expenses (income), net	54			(30)			59	(44)
Total operating costs and expenses	920			887			2,561	2,628
Income from operations	417			571			1,049	1,496
Interest expense, net	129			137			376	406
Loss on early extinguishment of debt				4				4
Income before income taxes	288			430			673	1,086
Income tax expense	65			79			62	232
Net income	223			351			611	854
Equity in earnings of consolidated subsidiaries	0			0			0	0
Net income	223			351			611	854
Comprehensive income (loss) attributable to noncontrolling interests	0			0			1	0
Net income attributable to common unitholders	223			351			610	854
Comprehensive income (loss)	269			301			263	957
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
Loss on early extinguishment of debt				0				0
Income before income taxes	0			0			0	0
Income tax expense	0			0			0	0
Net income	0			0			0	0
Equity in earnings of consolidated subsidiaries	223			351			611	854
Net income	223			351			611	854
Comprehensive income (loss) attributable to noncontrolling interests	0			0			1	0
Net income attributable to common unitholders	223			351			610	854
Comprehensive income (loss)	269			301			263	957
Sales
Revenues:
Sales	541			624			1,450	1,735
Sales | Eliminations
Revenues:
Sales	0			0			0	0
Sales | Consolidated Borrowers | Reportable Legal Entities
Revenues:
Sales	541			624			1,450	1,735
Sales | RBILP | Reportable Legal Entities
Revenues:
Sales	$ 0			$ 0			$ 0	$ 0