Shareholders' Equity - Additional Information (Details) - shares	6 Months Ended	12 Months Ended
Jun. 30, 2020	Dec. 31, 2019
Partnerships Exchangeable Units
Stockholders Equity [Line Items]
Exchange of partnership exchangeable units for RBI common shares (in shares)	2,672,900
Restaurant Brands International Limited Partnership
Stockholders Equity [Line Items]
Partnership exchangeable units economic interest	35.00%	35.70%
Partnership exchangeable units economic interest, shares	162,834,299	165,507,199

The number of shares issued during the period upon the conversion of units. An example of a convertible unit is an umbrella partnership real estate investment trust unit (UPREIT unit).

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Period Type:	duration