Segment Reporting and Geographical Information - Revenues by Geographic Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Revenue, Major Customer [Line Items]
Revenues:	$ 5,739	$ 4,968	$ 5,603
Canada
Revenue, Major Customer [Line Items]
Revenues:	$ 3,035	$ 2,546	$ 3,037
Canada | Sales revenue | Geographic concentration risk
Revenue, Major Customer [Line Items]
Percentage of revenue (as a percent)	10.00%	10.00%	10.00%
United States
Revenue, Major Customer [Line Items]
Revenues:	$ 2,005	$ 1,889	$ 1,930
United States | Sales revenue | Geographic concentration risk
Revenue, Major Customer [Line Items]
Percentage of revenue (as a percent)	10.00%	10.00%	10.00%
Other
Revenue, Major Customer [Line Items]
Revenues:	$ 699	$ 533	$ 636
TH
Revenue, Major Customer [Line Items]
Revenues:	3,342	2,810	3,344
BK
Revenue, Major Customer [Line Items]
Revenues:	1,813	1,602	1,777
PLK
Revenue, Major Customer [Line Items]
Revenues:	579	556	482
FHS
Revenue, Major Customer [Line Items]
Revenues:	$ 5	$ 0	$ 0