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OPERATING SEGMENTS - Narrative (Details)	Dec. 31, 2021 segment
Operating Segments [Abstract]
Number of operating segments	1

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- Definition

Number Of Operating Segments

+ References

No definition available.

+ Details

Name:	arvl_NumberOfOperatingSegments
Namespace Prefix:	arvl_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

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- Definition

Operating Segments

+ References

No definition available.

+ Details

Name:	arvl_OperatingSegmentsAbstract
Namespace Prefix:	arvl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration