Name:	pfsi_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisGainLossIncludedInEarnings
Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- References

No definition available.

Name:	pfsi_FairValueAssetsAndLiabilitiesMeasuredOnNonrecurringBasisGainLossIncludedInEarningsAbstract
Namespace Prefix:	pfsi_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured on a nonrecurring basis using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	pfsi_FairValueMeasurementWithUnobservableInputsReconciliationNonrecurringBasisAssetGainLossIncludedInEarnings
Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Amount of gain (loss) recognized in the income statement for financial instrument classified as real estate acquired in settlement of loans measured on a nonrecurring basis using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

No definition available.

Name:	pfsi_FairValueMeasurementWithUnobservableInputsReconciliationNonrecurringBasisGainLossFromRealEstateAcquiredInSettlementOfLoans
Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Represents the period-end amount of mortgage servicing rights accounted for at lower of amortized cost or fair value that was remeasured at fair value during period.

No definition available.

Name:	pfsi_MortgageServicingRightsAtLowerOfAmortizedCostOrFairValueMeasuredAtFairValueDuringThePeriod
Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Represents the period-end balance of the portion of real estate acquired in settlement of loans that was remeasured based on fair value during the period.

No definition available.

Name:	pfsi_RealEstateAcquiredInSettlementOfLoansMeasuredAtFairValueDuringPeriod
Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

Name:	us-gaap_AssetsFairValueDisclosure
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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.

No definition available.