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Significant accounting policies (Details)	12 Months Ended
	Dec. 31, 2021 $ / t
Significant accounting policies [Abstract]
Internal carbon price	58

X

- Definition

Entity's currently applied internal carbon price.

+ References

No definition available.

+ Details

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Namespace Prefix:	eqnr_
Data Type:	srt-types:perUnitItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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Namespace Prefix:	eqnr_
Data Type:	xbrli:stringItemType
Balance Type:	na
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