Shareholders' Equity - Additional Information (Detail) - shares	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Restaurant Brands International Limited Partnership
Stockholders Equity [Line Items]
Partnership exchangeable units economic interest	49.00%	49.20%
Partnership exchangeable units economic interest, Amount	226,848,674	226,995,404
Common Class A
Stockholders Equity [Line Items]
Stock Issued During Period, Shares, Conversion of Convertible Securities	146,730