Accounts receivable - Summary of Activity Related to Allowance for Doubtful Accounts (Details) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Dec. 31, 2022 |
Dec. 31, 2021 |
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| Subclassifications of assets, liabilities and equities [abstract] | ||
| Balance, beginning of year | $ 2 | $ 5 |
| Recovery | 0 | (3) |
| Write-off | (1) | 0 |
| Balance, end of year | $ 1 | $ 2 |
| X | ||||||||||
- Definition The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets] Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition The decrease in an allowance account for credit losses of financial assets resulting from the reversal of impairment. [Refer: Allowance account for credit losses of financial assets] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- References No definition available.
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| X | ||||||||||
- Definition The decrease in an allowance account for credit losses of financial assets resulting from the utilisation of the allowance. [Refer: Allowance account for credit losses of financial assets] Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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