The amount of bonds issued by the entity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_BondsIssued
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The description of the reasons for transfers of assets out of Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2024-01-01
-Paragraph 93
-Subparagraph e
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2024-en-r&anchor=para_93_e_iv&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_DescriptionOfReasonsForTransfersOutOfLevel3OfFairValueHierarchyAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

Name:	ifrs-full_DisclosureOfDetailedInformationAboutBorrowingsLineItems
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The amount of other comprehensive income, net of tax, after reclassification adjustments, related to hedges of net investments in foreign operations. [Refer: Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 91
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_91_a&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 9
-IssueDate 2024-01-01
-Paragraph 6.5.13
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=9&code=ifrs-tx-2024-en-r&anchor=para_6.5.13_a&doctype=Standard
-URIDate 2024-03-27

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 39
-IssueDate 2024-01-01
-Paragraph 102
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=39&code=ifrs-tx-2024-en-r&anchor=para_102_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_OtherComprehensiveIncomeNetOfTaxHedgesOfNetInvestmentsInForeignOperations
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of transfers of assets out of Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]

+ References

+ Details

Name:	ifrs-full_TransfersOutOfLevel3OfFairValueHierarchyAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

+ Details

Name:	nvs_LongtermFinancialDebtWithACarryingAmount
Namespace Prefix:	nvs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- References

No definition available.

+ Details

Name:	nvs_NetInvestmentHedgeRecognizedInTheConsolidatedIncomeStatement
Namespace Prefix:	nvs_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	nvs_FairValueByMeasurementBasis1Axis=nvs_CarryingReportedAmountFairValueDisclosure1Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	nvs_FairValueByMeasurementBasis1Axis=nvs_FairValueDisclosureItemAmountsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Financial instruments (Details 3) $ in Millions, € in Billions	3 Months Ended		6 Months Ended
	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2025 EUR (€)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 EUR (€)
Disclosure of detailed information about borrowings [line items]
Transfers out of Level 3 of fair value hierarchy, assets			$ 3
Description of reasons for transfers out of Level 3 of fair value hierarchy, assets			In the first half of 2025, there was one transfer of equity securities from Level 3 to Level 1 for USD 3 million due to Initial Public Offering.
Long-term financial debt with a carrying amount	$ 3,900		$ 3,900		€ 3.3	$ 1,900	€ 1.8
Net investment hedge, net of taxes	(173)	$ 14	(233)	$ 51
Net investment hedge recognized in the consolidated income statement	0	$ 0	0	$ 0
Carrying reported amount fair value disclosure [member]
Disclosure of detailed information about borrowings [line items]
Bonds issued	23,700		23,700			24,100
Fair value disclosure item amounts [member]
Disclosure of detailed information about borrowings [line items]
Bonds issued	$ 22,300		$ 22,300			$ 22,500