Revenue Recognition - Change in contract liabilities (Details) $ in Millions	6 Months Ended
	Jun. 30, 2020 USD ($)
Change In Contract With Customer Liability [Roll Forward]
Beginning balance	$ 541
Recognized during period and included in the contract liability balance at the beginning of the year	(46)
Increase, excluding amounts recognized as revenue during the period	17
Impact of foreign currency translation	(2)
Ending balance	510
Tim Hortons brand
Change In Contract With Customer Liability [Roll Forward]
Beginning balance	64
Recognized during period and included in the contract liability balance at the beginning of the year	(4)
Increase, excluding amounts recognized as revenue during the period	3
Impact of foreign currency translation	(2)
Ending balance	61
Burger King brand
Change In Contract With Customer Liability [Roll Forward]
Beginning balance	449
Recognized during period and included in the contract liability balance at the beginning of the year	(41)
Increase, excluding amounts recognized as revenue during the period	9
Impact of foreign currency translation	0
Ending balance	417
Popeyes brand
Change In Contract With Customer Liability [Roll Forward]
Beginning balance	28
Recognized during period and included in the contract liability balance at the beginning of the year	(1)
Increase, excluding amounts recognized as revenue during the period	5
Impact of foreign currency translation	0
Ending balance	$ 32