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Provisions and other non-current liabilities (Details 1) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Environmental provision [roll forward] |  |  |
Environmental liabilities provision at beginning of period | $ 616 | $ 809 | $ 714
Cash payments | (6) | (169) | (10)
Releases | (18) | (105) | (27)
Additions | 6 | 105 | 82
Currency translation effects | (10) | (24) | 50
Environmental liabilities provision at end of period | 588 | 616 | 809
Less current provision | (53) | (49) | (167)
Non-current environmental remediation provisions at end of period | $ 535 | $ 567 | $ 642

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvision
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionAdditions
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionCurrent
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionForeignCurrencyTranslationGainLoss
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionPayments
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionReleases
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- References No definition available. + Details
Name: | nvs_EnvironmentalProvisionRollForward
Namespace Prefix: | nvs_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
Name: | nvs_EnvironmentalRemediationProvisionNoncurrent
Namespace Prefix: | nvs_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant