Contingent Capital And Expense Receivable, Noncurrent

No definition available.

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Namespace Prefix:	mro_
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- Definition

Contingent Royalty Liability

+ References

No definition available.

+ Details

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Namespace Prefix:	mro_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The carrying amount of a liability for an asset retirement obligation. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 410
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

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- Definition

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.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
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- Definition

Maximum potential amount of future payments (undiscounted) the guarantor could be required to make under the guarantee or each group of similar guarantees before reduction for potential recoveries under recourse or collateralization provisions.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
-URI http://asc.fasb.org/extlink&oid=124440162&loc=d3e12069-110248

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

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Namespace Prefix:
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- Details

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Balance Type:
Period Type:

- Details

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- Details

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- Details

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Namespace Prefix:
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Commitments and Contingencies (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Guarantor Obligations [Line Items]
Guarantor obligations, current carrying value	$ 4
Contingent royalty liability	134
Contingent capital and expense receivable, noncurrent	24
Asset retirement obligation	316	$ 254	$ 254
Gulf Of Mexico
Guarantor Obligations [Line Items]
Asset retirement obligation	37	$ 7
Accounts Payable
Guarantor Obligations [Line Items]
Contingent royalty liability	122
Other current liabilities
Guarantor Obligations [Line Items]
Contingent royalty liability	12
Performance of Equatorial Guinea LNG Operations, S.A.
Guarantor Obligations [Line Items]
Guarantor obligations, maximum amount	91
Performance of Alba Plant LLC.
Guarantor Obligations [Line Items]
Guarantor obligations, maximum amount	$ 25