Common stock exchange ratio.

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Modification impact of stock option awards with tandem SARs from liabilities to equity.

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Number of awards under share based compensation plan.

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Aggregate cash paid by the entity during the period to settle equity instruments granted under equity-based payment arrangements.

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Unrecognized cost of unvested share-based compensation awards.

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Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Unrecognized cost of unvested options awarded to employees as compensation.

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Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Net number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Percentage of vesting of share-based compensation awards.

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Intrinsic value of equity-based compensation awards vested. Excludes stock and unit options.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for option awards outstanding, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Carrying value as of the balance sheet date of obligations and payables pertaining to claims incurred of a workers compensation nature. Used to reflect the noncurrent portion of the liabilities (due beyond one year; or beyond one operating cycle if longer).

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Share-based Compensation - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2015 USD ($) award $ / shares shares	Dec. 31, 2014 USD ($) $ / shares shares	Dec. 31, 2013 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock exchange ratio	2.41
Vesting period	5 years
Stock options, expiration period	10 years
Portion of options vesting on each anniversary date, vesting percentage	20.00%
Performance based restricted stock units granted \| shares	299,000
vesting terms of performance based awards	The Performance Awards will vest one-third each on September 30, 2017, September 30, 2018 and September 30, 2019, respectively, if the performance condition is met.
Expected term of grant options			6 years 9 months 29 days
Fair value of options granted \| $ / shares	$ 10.12	$ 7.17	$ 5.23
Total intrinsic value of stock options exercised	$ 40,300,000	$ 4,900,000	$ 25,300,000
Total unrecognized compensation cost related to stock options outstanding	$ 56,500,000
Unrecognized compensation cost, recognition period	2 years 2 months 12 days
Share-based compensation liability	$ 5,500,000	34,800,000
Cash settlements of stock options with SARs	30,600,000	$ 0	$ 0
Reclassification adjustments to other liabilities, net to common shares	$ 10,200,000
Weighted average grant date fair value of nonvested shares granted \| $ / shares	$ 35.00	$ 38.99	$ 22.74
Total intrinsic value of RSU grants which settled			$ 800,000
RSU settled during period \| shares	0	0
Unrecognized compensation cost, recognition period	6 years 9 months 18 days
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term of grant options	3 years 6 months 11 days	1 year
Minimum [Member] \| U.S. Treasury Yield [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term of grant options	3 years
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term of grant options	7 years 4 months 6 days	6 years 8 months 16 days
Maximum [Member] \| U.S. Treasury Yield [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term of grant options	5 years
First Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Portion of options vesting on each anniversary date, vesting percentage	20.00%
Second Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Portion of options vesting on each anniversary date, vesting percentage	40.00%
Third Anniversary [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Portion of options vesting on each anniversary date, vesting percentage	100.00%
2014 Omnibus Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for issuance under the Plan \| shares	9,802,906
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based restricted stock units granted \| shares	262,889
Unrecognized compensation cost	$ 8,700,000
Unrecognized compensation cost, recognition period	2 years 8 months 12 days
Performance Based Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance based stock options granted \| shares	198,065
Tim Hortons [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of new awards under share-based compensation plan \| award	0