Equity Method Investments - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Schedule of Equity Method Investments [Line Items]
Equity method investments	$ 152.9	$ 152.9		$ 139.0
Carrols Restaurant Group, Inc. [Member]
Schedule of Equity Method Investments [Line Items]
Quoted market price	$ 112.0	$ 112.0
TIMWEN Partnership [Member]
Schedule of Equity Method Investments [Line Items]
Joint-venture interest	50.00%	50.00%
Cash distributions	$ 3.1	$ 5.6
Contingent rent expense	5.2	9.6
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	$ 14.6	$ 14.6		$ 23.9