Supplemental Financial Information - Condensed Consolidating Statements of Operations (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Revenues:
Sales	$ 602,100,000	$ 558,600,000	$ 1,152,500,000	$ 1,049,100,000
Franchise and property revenues	530,600,000	481,600,000	980,800,000	909,600,000
Total revenues	1,132,700,000	1,040,200,000	2,133,300,000	1,958,700,000
Operating costs and expenses:
Cost of sales	460,200,000	438,000,000	883,600,000	828,600,000
Franchise and property expenses	113,700,000	111,900,000	224,700,000	213,700,000
Selling, general and administrative expenses	96,700,000	73,100,000	218,600,000	146,300,000
(Income) loss from equity method investments	900,000	4,500,000	(4,800,000)	(14,000,000)
Other operating expenses (income), net	46,800,000	(11,300,000)	60,600,000	29,500,000
Total operating costs and expenses	718,300,000	616,200,000	1,382,700,000	1,204,100,000
Income from operations	414,400,000	424,000,000	750,600,000	754,600,000
Interest expense, net	128,000,000	117,200,000	239,400,000	232,300,000
Loss on early extinguishment of debt	0	0	20,400,000	0
Income before income taxes	286,400,000	306,800,000	490,800,000	522,300,000
Income tax expense	42,900,000	59,200,000	80,700,000	106,400,000
Net income	243,500,000	247,600,000	410,100,000	415,900,000
Equity in earnings of consolidated subsidiaries	0	0	0	0
Net income	243,500,000	247,600,000	410,100,000	415,900,000
Comprehensive income (loss) attributable to noncontrolling interests	400,000	900,000	800,000	1,800,000
Partnership preferred unit distributions	67,500,000	67,500,000	135,000,000	135,000,000
Net income attributable to common unitholders	175,600,000	179,200,000	274,300,000	279,100,000
Comprehensive income (loss)	417,400,000	304,300,000	647,100,000	838,600,000
Eliminations
Revenues:
Sales	0	0	0	0
Franchise and property revenues	0			0.0
Total revenues	0	0	0	0
Operating costs and expenses:
Cost of sales				0
Franchise and property expenses				0
Selling, general and administrative expenses				0
(Income) loss from equity method investments			0	0
Other operating expenses (income), net				0
Total operating costs and expenses	0	0	0	0
Income from operations	0	0	0	0
Interest expense, net				0
Income before income taxes	0	0	0	0
Income tax expense				0
Net income	0	0	0	0
Equity in earnings of consolidated subsidiaries	(243,500,000)	(247,600,000)	(410,100,000)	(415,900,000)
Net income	(243,500,000)	(247,600,000)	(410,100,000)	(415,900,000)
Comprehensive income (loss) attributable to noncontrolling interests	(400,000)	(900,000)	(800,000)	(1,800,000)
Partnership preferred unit distributions	0		0	0
Net income attributable to common unitholders	(243,100,000)	(246,700,000)	(409,300,000)	(414,100,000)
Comprehensive income (loss)	(417,400,000)	(304,300,000)	(647,100,000)	(838,600,000)
Consolidated Borrowers
Revenues:
Sales	602,100,000	558,600,000	1,152,500,000	1,049,100,000
Franchise and property revenues	530,600,000	481,600,000	980,800,000	909,600,000
Total revenues	1,132,700,000	1,040,200,000	2,133,300,000	1,958,700,000
Operating costs and expenses:
Cost of sales	460,200,000	438,000,000	883,600,000	828,600,000
Franchise and property expenses	113,700,000	111,900,000	224,700,000	213,700,000
Selling, general and administrative expenses	96,700,000	73,100,000	218,600,000	146,300,000
(Income) loss from equity method investments	900,000	4,500,000	(4,800,000)	(14,000,000)
Other operating expenses (income), net	46,800,000	(11,300,000)	60,600,000	29,500,000
Total operating costs and expenses	718,300,000	616,200,000	1,382,700,000	1,204,100,000
Income from operations	414,400,000	424,000,000	750,600,000	754,600,000
Interest expense, net	128,000,000	117,200,000	239,400,000	232,300,000
Loss on early extinguishment of debt			20,400,000
Income before income taxes	286,400,000	306,800,000	490,800,000	522,300,000
Income tax expense	42,900,000	59,200,000	80,700,000	106,400,000
Net income	243,500,000	247,600,000	410,100,000	415,900,000
Equity in earnings of consolidated subsidiaries	0	0	0	0
Net income	243,500,000	247,600,000	410,100,000	415,900,000
Comprehensive income (loss) attributable to noncontrolling interests	400,000	900,000	800,000	1,800,000
Partnership preferred unit distributions	0	0	0	0
Net income attributable to common unitholders	243,100,000	246,700,000	409,300,000	414,100,000
Comprehensive income (loss)	417,400,000	304,300,000	647,100,000	838,600,000
RBILP
Revenues:
Sales	0	0	0	0
Franchise and property revenues	0			0.0
Total revenues	0	0	0	0
Operating costs and expenses:
Cost of sales				0
Franchise and property expenses				0
Selling, general and administrative expenses				0
(Income) loss from equity method investments			0	0
Other operating expenses (income), net				0
Total operating costs and expenses	0	0	0	0
Income from operations	0	0	0	0
Interest expense, net				0
Income before income taxes	0	0	0	0
Income tax expense				0
Net income	0	0	0	0
Equity in earnings of consolidated subsidiaries	243,500,000	247,600,000	410,100,000	415,900,000
Net income	243,500,000	247,600,000	410,100,000	415,900,000
Comprehensive income (loss) attributable to noncontrolling interests	400,000	900,000	800,000	1,800,000
Partnership preferred unit distributions	67,500,000	67,500,000	135,000,000	135,000,000
Net income attributable to common unitholders	175,600,000	179,200,000	274,300,000	279,100,000
Comprehensive income (loss)	$ 417,400,000	$ 304,300,000	$ 647,100,000	$ 838,600,000