Segment Reporting - Reconciliation of Segment Income to Net Income (Loss) (Detail) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	$ 531.1	$ 479.1	$ 974.4	$ 886.9
Impact of equity method investments	(0.9)	(4.5)	4.8	14.0
Other operating expenses (income), net	46.8	(11.3)	60.6	29.5
EBITDA	459.8	467.5	839.3	840.1
Depreciation and amortization	45.4	43.5	88.7	85.5
Income from operations	414.4	424.0	750.6	754.6
Interest expense, net	128.0	117.2	239.4	232.3
Loss on early extinguishment of debt	0.0	0.0	20.4	0.0
Income tax expense	42.9	59.2	80.7	106.4
Net income	243.5	247.6	410.1	415.9
Operating Segments \| Tim Hortons
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	281.1	279.0	537.3	506.8
Operating Segments \| Burger King
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	216.8	200.1	403.9	380.1
Operating Segments \| Popeyes
Segment Reporting, Revenue Reconciling Item [Line Items]
Adjusted EBITDA	33.2	0.0	33.2	0.0
Unallocated Management G&A
Segment Reporting, Revenue Reconciling Item [Line Items]
Share-based compensation and non-cash incentive compensation expense	11.9	11.3	30.4	19.2
Integration costs	0.0	3.8	0.0	6.0
Impact of equity method investments	4.1	7.8	1.2	(7.9)
Other operating expenses (income), net	46.8	(11.3)	60.6	29.5
Popeyes Acquisition
Segment Reporting, Revenue Reconciling Item [Line Items]
PLK Transaction costs	$ 8.5	$ 0.0	$ 42.9	$ 0.0

Adjusted earnings before interest tax depreciation and amortization.

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Depreciation and amortization excluding depreciation and amortization included in other (income) expenses, net.

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Earnings before interest tax depreciation and amortization.

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The aggregate amount of share-based compensation and the portion of annual non-cash incentive compensation that eligible employees elected or are expected to elect to receive as common equity in lieu of their cash bonus.

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This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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