Finance Lease, Right-of-Use Asset, Fair Value Disclosure

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Proved Property, Fair Value Disclosure

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Unproved Properties, Fair Value Disclosure

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Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

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Amount of impairment loss from right-of-use asset from finance lease.

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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

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The expense recorded to reduce the value of oil and gas assets consisting of proved properties and unproved properties as the estimate of future successful production from these properties is reduced.

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

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No definition available.

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Impairments (Details) - USD ($) $ in Millions	3 Months Ended			6 Months Ended
Impairments (Details) - USD ($) $ in Millions	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Mar. 31, 2010
Property, Plant and Equipment
Asset impairments expenses	$ 51		$ 0	$ 2,754	$ 0
Leasehold impairment expense	51
Goodwill impairment	0		0	110	0
Finance lease right-of use asset impairment	0		0	40	0
Carrying Amount
Property, Plant and Equipment
Finance Leases		$ 88
Leasehold Impairment
Property, Plant and Equipment
Leasehold impairment expense	3		0	1,488	0
Delaware Basin \| Proved Property
Property, Plant and Equipment
Asset impairments expenses	0		0	2,703	0
Felicita
Property, Plant and Equipment
Asset impairments expenses	51		0	51	0
Delaware Basin \| Leasehold Impairment
Property, Plant and Equipment
Leasehold impairment expense	0		0	1,385	0
Fair value of proved properties		910				$ 3,600
Fair value of unproved properties		530				$ 1,900
Asset impairment charges		4,100
Eagle Ford Shale \| Leasehold Impairment
Property, Plant and Equipment
Leasehold impairment expense	0		0	100	0
Gabon \| Leasehold Impairment
Property, Plant and Equipment
Leasehold impairment expense			0	3	0
Non-controlling Interests
Property, Plant and Equipment
Leasehold impairment expense				72
Goodwill impairment				72
Parent Company
Property, Plant and Equipment
Leasehold impairment expense				38
Noble Midstream Partners
Property, Plant and Equipment
Goodwill impairment	0	110	0	110	0
Finance Lease Right-of-Use Asset Impairment
Property, Plant and Equipment
Finance lease right-of use asset impairment	$ 0	$ 40	$ 0	$ 40	$ 0