Long-term Debt and Interest Expense - Convertible Notes (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022
Derivative [Line Items]
Principal repayments	$ 230	$ 1,292
0.250% convertible senior notes due 2025 \| Convertible debt
Derivative [Line Items]
Principal repayments	92	0
Conversion premiums	138	0
Cash payments	230	0
Capped Call proceeds	31	0
Conversion option derivative payments, net	7	0
Cash receipts, net	$ 38	$ 0

Capped Call Proceeds And Conversion Option Derivatives

No definition available.

Name:	pxd_CappedCallProceedsAndConversionOptionDerivatives
Namespace Prefix:	pxd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Cash Receipts

+ References

No definition available.

+ Details

Name:	pxd_CashReceipts
Namespace Prefix:	pxd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Cash Receipts (Payments/Deferred Obligations) On Settled Derivatives, Net

+ References

No definition available.

+ Details

Name:	pxd_CashReceiptsPaymentsDeferredObligationsOnSettledDerivativesNet
Namespace Prefix:	pxd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Repayment Of Long Term Debt And Payment of Early Conversion Premium

+ References

No definition available.

+ Details

Name:	pxd_RepaymentOfLongTermDebtAndPaymentOfEarlyConversionPremium
Namespace Prefix:	pxd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

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

- Definition

Amount of cash outflow for cost from early extinguishment and prepayment of debt. Includes, but is not limited to, third-party cost, premium paid, and other fee paid to lender directly for debt extinguishment or debt prepayment. Excludes accrued interest.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3291-108585

+ Details

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

- Details

Name:	us-gaap_DebtInstrumentAxis=pxd_A025ConvertibleSeniorNotesDue2025Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_LongtermDebtTypeAxis=us-gaap_ConvertibleDebtMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: