Consequences of initiatives to limit climate changes (Details) $ in Millions	12 Months Ended
Dec. 31, 2021 USD ($) $ / t kr / t € / t	Dec. 31, 2020 USD ($) € / t
Climate changes [line items]
Impairment exposure due to net zero emission	$ 9,000
Internal carbon price \| $ / t	58
External carbon price \| € / t		56
Expense related to carbon emissions and purchase	$ 428	$ 268
Next two years [member]
Climate changes [line items]
External carbon price \| € / t		80
2030 and thereafter [member]
Climate changes [line items]
Internal carbon price \| $ / t	100
External carbon price \| € / t	65	27.5
Expected tax increase on carbon emissions maximum \| kr / t	2,000
2050 [member]
Climate changes [line items]
Impairment exposure due to net zero emission	$ 7,000
External carbon price \| € / t	100	41
Oil and Gas prospects, signature bonuses and the capitalised exploration costs [Member]
Climate changes [line items]
Total carrying value of intangible assets	$ 4,600
Asset retirement obligations [Member]
Climate changes [line items]
Increase in liability	$ 200

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- Definition

The amount of expected tax increase per tonne by the state government on carbon emissions per tonne, maximum amount.

+ References

No definition available.

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Expense related to carbon emissions and purchase

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- Definition

The carbon price set for countries outside of EU.

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No definition available.

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Entity's currently applied internal carbon price.

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- Definition

Maximum possible impairment property plant and equipment

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- Definition

The increase in existing other provisions. [Refer: Other provisions]

+ References

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The amount of identifiable non-monetary assets without physical substance. This amount does not include goodwill. [Refer: Goodwill]

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