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Warrant liabilities - ECARX Warrants in connection with the Merger (Details)	1 Months Ended
	Dec. 31, 2022 ¥ / shares Y $ / shares shares
ECARX Warrants
Warrant liabilities
Number of warrants issued	23,871,971
ECARX Public Warrants
Warrant liabilities
Number of warrants issued	14,999,971
Number of days after the completion of the Merger for commencement of exercise of warrants	30 days
Exercise price of warrants | $ / shares	$ 11.50
Warrant term	5 years
ECARX Private Warrants
Warrant liabilities
Number of warrants issued	8,872,000
Risk-free rate of return (%) | Level 3 | ECARX Private Warrants
Warrant liabilities
Warrants measurement input	0.0399
Volatility | Level 3 | ECARX Private Warrants
Warrant liabilities
Warrants measurement input	0.0699
Expected dividend yield | Level 3 | ECARX Private Warrants
Warrant liabilities
Warrants measurement input	0.000
Expected term | Level 3 | ECARX Private Warrants
Warrant liabilities
Warrants measurement input | Y	5.0
Fair value of the underlying ordinary shares | Level 3 | ECARX Private Warrants
Warrant liabilities
Warrants measurement input	55.11

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- Definition

Number of days after the completion of the merger for commencement of exercise of warrants.

+ References

No definition available.

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- Definition

Exercise price per share or per unit of warrants or rights outstanding.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 3
-URI https://asc.fasb.org/extlink&oid=126973232&loc=d3e21475-112644

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- Definition

Value of input used to measure outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI https://asc.fasb.org/extlink&oid=126976982&loc=d3e19207-110258

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Period between issuance and expiration of outstanding warrant and right embodying unconditional obligation requiring redemption by transferring asset at specified or determinable date or upon event certain to occur, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
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