Trade receivables, other assets, prepaid expenses and Tax receivables - Schedule of receivables from financing activities (Details) - EUR (€) € in Millions	Dec. 31, 2025	Dec. 31, 2024
Trade and other receivables [abstract]
Dealer financing	€ 3,087	€ 2,330
Retail financing	10,703	8,494
Finance leases	540	299
Other	1,401	1,408
Receivables from financing activities at amortized cost	€ 15,731	€ 12,531

The amount of consumer loans made by the entity. [Refer: Loans to consumers [member]]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 112
-Subparagraph c
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-URIDate 2025-03-27

+ Details

Name:	ifrs-full_ConsumerLoans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of corporate loans made by the entity. [Refer: Loans to corporate entities [member]]

+ References

+ Details

Name:	ifrs-full_CorporateLoans
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of receivables related to finance leases.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Note Expiry date 2027-01-01
-Name IAS
-Number 1
-IssueDate 2025-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2025-en-b&anchor=para_55&doctype=Standard
-URIDate 2025-03-27

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The amount of loans and advances the entity has made to customers.

+ References

+ Details

Name:	ifrs-full_LoansAndAdvancesToCustomers
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- References

No definition available.

+ Details

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

- Definition

Other Financing Receivables

+ References

No definition available.

+ Details

Name:	stellantis_OtherFinancingReceivables
Namespace Prefix:	stellantis_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant