Equity - Additional Information (Details) $ in Millions	12 Months Ended
	Dec. 31, 2018 USD ($) day shares	Dec. 31, 2017 USD ($) shares	Dec. 31, 2016 shares
Stockholders Equity [Line Items]
Number of consecutive trading days | day	20
Exchange of Partnership exchange units for RBI common shares (in shares)	10,185,333	9,286,480	6,744,244
Partners capital account exchanges and conversions (in shares)	10,000,000	5,000,000
Partners capital account converted units (in shares) | $	$ 561	$ 330
Partnership exchangeable units
Stockholders Equity [Line Items]
Exchange of Partnership exchange units for RBI common shares (in shares)	185,333	4,286,480	(6,744,244)