Equity Method Investments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 152.8	$ 152.8		$ 139.0
Carrols Restaurant Group, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Quoted market price	$ 124.4	$ 124.4
TIMWEN Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Joint-venture interest	50.00%	50.00%
Cash distributions	$ 2.7	$ 8.3
Contingent rent expense	5.1	14.7
Burger King France SAS [Member]
Schedule of Equity Method Investments [Line Items]
Increase in carrying value of investment and noncash dilution gain on the issuance of capital stock		11.6
BK Brasil Operacao E Assesoria A Restaurantes S.A. ("Brazil JV") [Member]
Schedule of Equity Method Investments [Line Items]
Increase in carrying value of investment and noncash dilution gain on the issuance of capital stock			$ 10.9
Equity Method Investee [Member]
Schedule of Equity Method Investments [Line Items]
Accounts receivable from equity method investments	$ 20.0	$ 20.0		$ 23.9