Aggregate notional amount specified by the derivative(s). Expressed as an absolute value.

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Minimum number of months from acquisition that a Company-operated restaurant is sold, after which goodwill written off is based on the relative fair value of the business sold compared to the reporting unit (defined as each individual country).

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Period of allotted time within the acquisition of a restaurant and then subsequent sale that the goodwill associated with the acquisition is written off in its entirety.

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Reclassification of amortized debt issuance costs from nonoperating (income)expense to interest expense as part of adoption of Accounting Standards Update 2015-03, "Interest - Imputation of Interest (Subtopic 835-30): Simplifying the Presentation of Debt Issuance Costs."

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Production costs for radio and television advertising as well as other marketing-related expenses included in selling, general and administrative expenses.

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The percentage of the total shares expected to be received under the accelerated share repurchase program based on the market price at the time of initial delivery.

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Number of shares that have been repurchased through an Accelerated Share Repurchase program and are being held in treasury.

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Amount of cash receipt from (payment to) bank; or stock received from (issuance to) bank in the settlement of the accelerated share repurchase agreement.

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Accumulated change, net of tax, in accumulated gains and losses from derivative instruments designated and qualifying as the effective portion of cash flow hedges. Includes an entity's share of an equity investee's Increase or Decrease in deferred hedging gains or losses.

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer.

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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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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Maximum length of time over which the entity is hedging its exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Nominal or face amount used to calculate payments on a nonderivative instrument.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment).

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Summary of Significant Accounting Policies - Additional Information (Detail) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Feb. 12, 2016
Significant Accounting Policies [Line Items]
Derivative, Notional Amount	$ 287.8
Other debt related interest expense		$ 5.9	$ 5.9
Advertising costs of Company-operated restaurants	718.7	808.2	808.4
Other marketing-related expenses	113.8	98.7	75.4
Unrecognized compensation cost related to nonvested share-based compensation that is expected to be recognized	$ 98.8
Weighted-average expected recognition period for unrecognized share-based compensation costs	2 years
Long lived assets impairment test period	12 months
Goodwill impairment test period	24 months
Fair value goodwill written off related to sale of restaurant minimum months Company-operated	24 months
Goodwill, Impaired, Accumulated Impairment Loss	$ 94.1	13.7
Debt obligations, carrying amount	24,100.0
Net increase (decrease) after-tax related to the cash flow hedges component of accumulate OCI in shareholders' equity	(11.0)	$ 33.3	$ (37.5)
Cumulative deferred hedging losses, after tax, included in accumulated other comprehensive income	$ (20.0)
Dilutive effect of share-based compensation	5.2	5.8	7.6
Stock options that were not included in diluted weighted-average shares	1.0	5.3	4.7
Level 2
Significant Accounting Policies [Line Items]
Debt obligations, fair value	$ 24,900.0
Interest Rate Swap
Significant Accounting Policies [Line Items]
Derivative, Notional Amount	2,200.0
Royalty Arrangement
Significant Accounting Policies [Line Items]
Derivative, Notional Amount	$ 373.6
Period covered by hedge	16 months
Cross Currency Swap
Significant Accounting Policies [Line Items]
Derivative, Notional Amount	$ 134.7
Period covered by hedge	15 months
Building [Member]
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life maximum	40 years
Leasehold Improvements [Member]
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life	the lesser of useful lives of assets or lease terms
Minimum \| Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life maximum	3 years
Maximum \| Equipment [Member]
Significant Accounting Policies [Line Items]
Property and equipment, estimated useful life maximum	12 years
Intercompany Debt [Member]
Significant Accounting Policies [Line Items]
Forgein currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates	$ 3,400.0
Debt [Member]
Significant Accounting Policies [Line Items]
Forgein currency denominated debt designated to hedge investments in certain foreign subsidiaries and affiliates	$ 6,200.0
Subsequent Event [Member]
Significant Accounting Policies [Line Items]
Accelerated Share Repurchases, Payment				$ 2,700.0
Treasury Stock Shares Acquired Through Accelerated Share Repurchase				18.5
Percent of total shares expected to receive at the time of initial delivery				80.00%