Minimum limit of debt for cross default provision.

No definition available.

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

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

+ Details

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Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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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.

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+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Gross amount of debt extinguished.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer.

+ References

No definition available.

+ Details

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

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

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

- Definition

Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

+ References

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

- Definition

Amount of long-term debt and lease obligation, including portion classified as current.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:

- Details

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Period Type:

- Details

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Balance Type:
Period Type:

- Details

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Debt - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
Debt - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2025	Feb. 28, 2025	Dec. 31, 2024
Debt Instrument [Line Items]
Total debt	$ 23,800		$ 24,300
Retired debt	500
Revolving Credit Facility
Debt Instrument [Line Items]
Project finance facility, maximum borrowing capacity		$ 5,500
Minimum limit of debt for cross default provision	200
Remaining borrowing capacity under revolving credit facility	5,500		$ 5,500
Letter of Credit \| Maximum
Debt Instrument [Line Items]
Line of credit facility, capacity available for specific purpose other than for trade purchases	500
Notes \| 2.125% Notes due 2024
Debt Instrument [Line Items]
Retired debt	$ 400
Stated interest rate	2.40%
Debentures \| 8.2% Notes due 2025
Debt Instrument [Line Items]
Retired debt	$ 100
Stated interest rate	8.20%
Variable Rate Debt Bonds
Debt Instrument [Line Items]
Debt at face value	$ 283