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Provisions, commitments, contingent liabilities and contingent assets (Details) $ in Millions	1 Months Ended	6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2021 USD ($)
Asset retirement obligations [member]
Disclosure of other provisions [line items]
Other provisions	$ 16,743	$ 16,743
Increase (decrease) in provisions due to changes in discount rate		(548)
ICMS indirect tax - Dispute with Brazilian tax authorities [member]
Disclosure of other provisions [line items]
Estimated exposure	428	$ 428
Indirect tax rate		18.00%
Redetermination process for Agbami field [member]
Disclosure of other provisions [line items]
Reduction in exposure due to settlement	822
Redetermination process for Agbami field [member] | E&P International [member]
Disclosure of other provisions [line items]
Other revenues	$ 57

X

- Definition

The percentage of indirect tax rate, a type of tax on circulation of goods and certain services.

+ References

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- Definition

The increase (decrease) in other provisions. [Refer: Other provisions]

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Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

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- Definition

The amount of the estimated financial effect of contingent liabilities. [Refer: Contingent liabilities [member]]

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