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Financial instruments - additional disclosures (Details 13) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021
Statement [line items] |  |
Hypothetical increase decrease percentage in currency rate sensitivity | 5.00% |
Hypothetical 5% increase [member] |  |
Statement [line items] |  |
Currency exchange rate sensitivity impact against USD in the income statement | $ (6) | $ 3
Currency exchange rate sensitivity impact against USD in the equity | 93 | 99
Hypothetical 5% decrease [member] |  |
Statement [line items] |  |
Currency exchange rate sensitivity impact against USD in the income statement | 7 | (3)
Currency exchange rate sensitivity impact against USD in the equity | $ (98) | $ (104)

X
- Definition In the sensitivity disclosure, no amounts have been recorded in the accounts, as it is a hypothetical scenario if interest rates would increase/decrease. + References No definition available. + Details
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X
- Definition In the sensitivity disclosure, no amounts have been recorded in the accounts, as it is a hypothetical scenario if interest rates would increase/decrease. + References No definition available. + Details
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X
- References No definition available. + Details
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Period Type: | duration

X
- References No definition available. + Details
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Data Type: | xbrli:stringItemType
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- Details
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Namespace Prefix: |
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Period Type: |

X
- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |