The Transactions - Additional Information (Detail) - USD ($) $ in Millions		6 Months Ended
Dec. 12, 2014	Jun. 30, 2015
Business Acquisition [Line Items]
Total decrease in goodwill		$ (6.9)
Tim Hortons [Member]
Business Acquisition [Line Items]
Total consideration	$ 11,294.9

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

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