Segment Reporting - Capital Expenditure (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Capital Expenditures:
Capital expenditures	$ 30.9	$ 25.5	$ 70.2
Operating Segments [Member] | Burger King [Member] | BK - U.S. & Canada [Member]
Capital Expenditures:
Capital expenditures	10.0	10.3	41.9
Operating Segments [Member] | Burger King [Member] | BK - EMEA [Member]
Capital Expenditures:
Capital expenditures		2.4	6.9
Operating Segments [Member] | Burger King [Member] | BK - LAC [Member]
Capital Expenditures:
Capital expenditures			1.4
Operating Segments [Member] | Burger King [Member] | BK - APAC [Member]
Capital Expenditures:
Capital expenditures			0.8
Operating Segments [Member] | Tim Hortons [Member]
Capital Expenditures:
Capital expenditures	8.0
Unallocated [Member]
Capital Expenditures:
Capital expenditures	$ 12.9	$ 12.8	$ 19.2