Long-Term Debt - Schedule of Interest Expense, Net (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Debt Instrument [Line Items]
Amortization of deferred financing costs and debt issuance discount	$ 9.7	$ 7.0
Capital lease obligations	4.8	5.1
Other	0.8	0.9
Interest income	(0.6)	(1.4)
Interest expense, net	115.1	123.1
Term Loan Facility [Member]
Debt Instrument [Line Items]
Interest expense	51.8	75.8
2015 Senior Notes [Member]
Debt Instrument [Line Items]
Interest expense	14.5
2014 Senior Notes [Member]
Debt Instrument [Line Items]
Interest expense	33.7	33.8
Tim Hortons Notes [Member]
Debt Instrument [Line Items]
Interest expense	$ 0.4	$ 1.9