Other liabilities - Disclosure of significant changes in group service contract liability (Details) € in Millions	12 Months Ended
Dec. 31, 2024 EUR (€)
Subclassifications of assets, liabilities and equities [abstract]
Contract liabilities at beginning of period	€ 2,968
Advances received from customers	1,274
Amounts recognized within revenue	(1,427)
Transfers to Assets/(Liabilities) held for sale	0
Other changes	(85)
Contract liabilities at end of period	€ 2,730

The amount of an entity’s obligation to transfer goods or services to a customer for which the entity has received consideration (or the amount is due) from the customer.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 105
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_105&doctype=Standard
-URIDate 2024-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 116
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_a&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

The amount of revenue that was included in the contract liability balance at the beginning of the period. [Refer: Contract liabilities; Revenue from contracts with customers]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2024-01-01
-Paragraph 116
-Subparagraph b
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2024-en-r&anchor=para_116_b&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- References

No definition available.

+ Details

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

- Definition

Advances Received From Customers, Contract Liabilities

+ References

No definition available.

+ Details

Name:	stellantis_AdvancesReceivedFromCustomersContractLiabilities
Namespace Prefix:	stellantis_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Decrease Through Transfer Lo Liabilities Held For Sale, Contract Liabilities

+ References

No definition available.

+ Details

Name:	stellantis_DecreaseThroughTransferLoLiabilitiesHeldForSaleContractLiabilities
Namespace Prefix:	stellantis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Increase (Decrease) Through Other Changes, Contract Liabilities

+ References

No definition available.

+ Details

Name:	stellantis_IncreaseDecreaseThroughOtherChangesContractLiabilities
Namespace Prefix:	stellantis_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration