Derivative Financial Instruments (Narrative) (Details) (July 15, 2022 Interest Rate Swaps [Member], USD $) In Millions, unless otherwise specified	Mar. 31, 2014
July 15, 2022 Interest Rate Swaps [Member]
Trading Activity, Gains and Losses, Net [Line Items]
Derivative, Fixed Interest Rate	3.95%
Notional amount of debt	$ 400
Derivative, Average Variable Interest Rate	1.11%

Swap Contract Notional Amount Fixed Rate of Interest and Variable LIBOR

No definition available.

Name:	pxd_SwapContractNotionalAmountFixedRateOfInterestAndVariableLibor
Namespace Prefix:	pxd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant