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Summary of significant accounting policies (Tables) | 9 Months Ended
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Sep. 30, 2023
Accounting Policies [Abstract] |
Summary of Customer and Supplier Concentration Risk | Customer and supplier concentrations consisted of the below:
| Three Months Ended September 30, 2023 |  | Three Months Ended September 30, 2022
| Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total |  | Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total
Revenue | — |  | $ | — |  | — | % |  | 1 | $ | 10 |  | 11 | %
Purchases | 1 |  | $ | 9 |  | 14 | % |  | 1 | $ | 9 |  | 11 | %
| Nine Months Ended September 30, 2023 |  | Nine Months Ended September 30, 2022
| Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total |  | Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total
Revenue | — |  | $ | — |  | — | % |  | 1 | $ | 42 |  | 13 | %
Purchases | 1 |  | $ | 26 |  | 12 | % |  | 1 | $ | 33 |  | 11 | %
| As of September 30, 2023 |  | As of December 31, 2022
| Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total |  | Number of customers or suppliers exceeding 10% | Aggregate Value (in millions) | % of Total
Accounts receivable | 1 |  | $ | 5 |  | 15 | % |  | — | $ | — |  | — | %
Accounts payable | 1 |  | $ | 6 |  | 16 | % |  | 2 | $ | 22 |  | 40 | %

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