Debt Instrument, Repurchase, Discount To Par

No definition available.

Name:	apa_DebtInstrumentRepurchaseDiscountToPar
Namespace Prefix:	apa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Extended Financing Agreement Term

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Line Of Credit Facility, Committed Amount

+ References

No definition available.

+ Details

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

- Definition

Line Of Credit Facility, Maximum Borrowing Capacity, If Adding New Lenders

+ References

No definition available.

+ Details

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

- Definition

Line Of Credit Facility, Number Of Extension Options

+ References

No definition available.

+ Details

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Namespace Prefix:	apa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Carrying value as of the balance sheet date of short-term borrowings using unsecured obligations issued by banks, corporations and other borrowers to investors. The maturities of these money market securities generally do not exceed 270 days.

+ References

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-Section S99
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+ Details

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

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
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+ Details

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

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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+ Details

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

- 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

Name:	us-gaap_DebtInstrumentLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Fair value amount of debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Face (par) amount of the original debt instrument that was repurchased.

+ References

No definition available.

+ Details

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

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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-Paragraph 1
-Subparagraph (b)
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+ Details

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

- Definition

Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

+ References

No definition available.

+ Details

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

+ References

No definition available.

+ Details

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

- Definition

The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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+ 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

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Details

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- Details

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- Details

Name:	us-gaap_CreditFacilityAxis=us-gaap_RevolvingCreditFacilityMember
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Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_SeniorNotesMember
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Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_LineOfCreditMember
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- Details

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- Details

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- Details

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DEBT AND FINANCING COSTS - Additional Information (Details) £ in Millions	1 Months Ended		3 Months Ended
	Mar. 31, 2019 USD ($)	Nov. 30, 2018 USD ($) contract	Mar. 31, 2021 USD ($)	Mar. 31, 2021 GBP (£)	Dec. 31, 2020 USD ($)	Dec. 31, 2020 GBP (£)	Mar. 31, 2020 USD ($)	Mar. 31, 2018 USD ($)
Debt Instrument [Line Items]
Finance lease obligations, current					$ 2,000,000
Commercial paper outstanding			$ 0				$ 0
Commercial Paper
Debt Instrument [Line Items]
Debt instrument, face amount			$ 3,500,000,000
Debt instrument term			270 days
Apache credit facility
Debt Instrument [Line Items]
Letters of credit outstanding, amount				£ 34	17,000,000
Line of credit outstanding			$ 0		0
Apache credit facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, committed amount								$ 4,000,000,000.0
Debt extension term	1 year
Senior Notes
Debt Instrument [Line Items]
Debt repurchased principal amount			7,000,000
Debt instrument repurchase program			6,000,000
Discount to par of debt repurchase			1,000,000
Gain (loss) of debt repurchase			0
Line of Credit \| Revolving Credit Facility \| Altus Midstream LP
Debt Instrument [Line Items]
Debt extension term		1 year
Credit facility maximum borrowing capacity		$ 800,000,000
Line of credit facility, number of extension options \| contract		2
Line of credit facility, maximum borrowing capacity if adding new lenders		$ 1,500,000,000
Line of Credit \| Letter of Credit \| Altus Midstream LP
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		100,000,000
Line of Credit \| Swingline Loan Subfacility \| Altus Midstream LP
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity		$ 100,000,000
Line of Credit \| Apache credit facility
Debt Instrument [Line Items]
Borrowing amount			65,000,000		150,000,000
Line of Credit \| Apache credit facility \| Revolving Credit Facility
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity	$ 5,000,000,000.0
Line of Credit \| Apache credit facility \| Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, committed amount			2,080,000,000.00
Credit facility maximum borrowing capacity			3,000,000,000.0
Letters of credit outstanding, amount			20,000,000	£ 573	40,000,000	£ 633
Line of Credit \| Altus credit facility
Debt Instrument [Line Items]
Borrowing amount			657,000,000		624,000,000
Line of Credit \| Altus credit facility \| Altus Midstream LP
Debt Instrument [Line Items]
Letters of credit outstanding, amount			2,000,000		0
Line of Credit \| Altus credit facility \| Revolving Credit Facility \| Altus Midstream LP
Debt Instrument [Line Items]
Line of credit outstanding			$ 657,000,000		$ 624,000,000