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Summary of significant accounting policies (Tables)
 12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Summary of Customer and Supplier Concentration Risk
Customer concentrations consisted of the below:
20222021
Number of customers exceeding 10%Aggregate Value
(in millions)		% of TotalNumber of customers exceeding 10%Aggregate Value
(in millions)		% of Total
Revenue1 $48 10 %2$171 27 %
Accounts receivable— $— — %1$7 10 %
Our supplier concentration can expose us to business risks. Supplier concentrations consisted of the below:
20222021
Number of suppliers exceeding 10%Aggregate Value
(in millions)		% of TotalNumber of suppliers exceeding 10%Aggregate Value
(in millions)		% of Total
Purchases1 $46 11 %1$55 10 %
Accounts payable2 $22 40 %2$21 34 %
Summary of Estimated Useful Lives of Property and Equipment Depreciation and amortization expense is calculated using the straight-line method over the estimated useful lives of each asset as follows:
Estimated useful life
Leasehold improvementsThe shorter of their lease term or the estimated useful life of the improvements
Computer3 years
Furniture and fixtures3 years