Accumulated tax uplift for the special tax.

No definition available.

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- Definition

Discount rate applied for ARO estimation increase decrease.

+ References

No definition available.

+ Details

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- Definition

Long-term risk-free interest rates, increase or (decrease).

+ References

No definition available.

+ Details

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- Definition

The reasonably possible percentage of the increase (decrease) market risk sensitivity.

+ References

No definition available.

+ Details

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- Definition

The applicable petroleum tax rate.

+ References

No definition available.

+ Details

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- Definition

The applicable income tax rate.

+ References

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- References

No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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- Definition

The amount of benefit arising from a previously unrecognised tax loss, tax credit or temporary difference of a prior period that is used to reduce current tax expense. [Refer: Temporary differences [member]; Unused tax losses [member]; Unused tax credits [member]]

+ References

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Impact of the Covid-19 pandemic and oil price decline (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Impact of the Covid-19 pandemic and oil price decline [abstract]
Long-term risk-free interest rates, increase or (decrease)	(1.30%)			(1.30%)
Discount rate applied for ARO estimation increase (decrease)	(0.60%)			(0.60%)
Petroleum tax rate				56.00%
Ordinary corporate tax				22.00%
The impact of the retrospective application of the temporary changes in the tax regulation		$ 115
Price Assumptions Used For Impairment Calculations [Line Items]
Gains (losses) on change in fair value of derivatives	$ 189	$ 193	$ 267	$ 382	$ 573	$ 473
Low range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Accumulated tax uplift for the special tax	20.80%			20.80%
High range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Accumulated tax uplift for the special tax	24.00%			24.00%
Other price risk [member] \| Low range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Percentage of reasonably possible change, market risk	(50.00%)			(50.00%)
Other price risk [member] \| High range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Percentage of reasonably possible change, market risk	100.00%			100.00%
Commodity price sensitivity [member] \| Low range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Percentage of reasonably possible change, market risk	(50.00%)			(50.00%)		(30.00%)
Commodity price sensitivity [member] \| High range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Percentage of reasonably possible change, market risk	100.00%			100.00%		30.00%
Commodity price sensitivity [member] \| Crude oil and refined products [member] \| Low range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Gains (losses) on change in fair value of derivatives	$ 80					$ 569
Commodity price sensitivity [member] \| Crude oil and refined products [member] \| High range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Gains (losses) on change in fair value of derivatives	(169)					(563)
Commodity price sensitivity [member] \| Natural gas and electricity [Member] \| Low range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Gains (losses) on change in fair value of derivatives	187					(33)
Commodity price sensitivity [member] \| Natural gas and electricity [Member] \| High range value [member]
Price Assumptions Used For Impairment Calculations [Line Items]
Gains (losses) on change in fair value of derivatives	$ 496					$ 49