Working capital - Narrative (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Working Capital [Abstract]
Increase (decrease) in working capital	€ 5,987	€ 5,472	€ 4,481
(Increase)/decrease in inventories	632	(4,388)	(5,606)
(Increase)/decrease in trade receivables	786	(2,249)	(1,986)
Increase/(decrease) in trade payables	(4,007)	1,058	4,165
Other changes	€ (3,398)	€ 107	€ (1,054)

Adjustments for decrease (increase) in inventories to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Inventories; Profit (loss)]

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20_a&doctype=Standard
-URIDate 2024-03-27

+ Details

Name:	ifrs-full_AdjustmentsForDecreaseIncreaseInInventories
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Adjustments for decrease (increase) in trade accounts receivable to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

+ References

+ Details

Name:	ifrs-full_AdjustmentsForDecreaseIncreaseInTradeAccountReceivable
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Adjustments for increase (decrease) in trade accounts payable to reconcile profit (loss) to net cash flow from (used in) operating activities. [Refer: Profit (loss)]

+ References

+ Details

Name:	ifrs-full_AdjustmentsForIncreaseDecreaseInTradeAccountPayable
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The increase (decrease) in working capital.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 7
-IssueDate 2024-01-01
-Paragraph 20
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=7&code=ifrs-tx-2024-en-r&anchor=para_20&doctype=Standard
-URIDate 2024-03-27

+ Details

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

- Definition

Other Decrease (Increase) In Working Capital

+ References

No definition available.

+ Details

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

- Definition

Working Capital [Abstract]

+ References

No definition available.

+ Details

Name:	stellantis_WorkingCapitalAbstract
Namespace Prefix:	stellantis_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration