Related Party Transaction, Additional Servicing Fee Per Month for Delinquent Loans

No definition available.

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Balance Type:	credit
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- Definition

Represents the base servicing fee per month for real estate in settlement of loans.

+ References

No definition available.

+ Details

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Namespace Prefix:	pfsi_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Related Party Transaction, Base Servicing Fee Per Month for Subserviced Adjustable Rate Loans

+ References

No definition available.

+ Details

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

- Definition

Related Party Transaction, Base Servicing Fee Per Month for Subserviced Fixed Rate Loans

+ References

No definition available.

+ Details

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

- Definition

The rate is for distressed loans whose payment status is current.

+ References

No definition available.

+ Details

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

- Definition

Related Party Transaction, Supplemental Fee Per Month for Each Distressed Whole Loan

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No definition available.

+ Details

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

- Definition

Amount of revenue from servicing real estate mortgages, and other financial assets held by others. Includes premiums received in lieu of regular servicing fee.

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No definition available.

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Name:	pfsi_ServicingFee
Namespace Prefix:	pfsi_
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.

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

- References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Related Party Transactions - Mortgage Loan Servicing (Details) - USD ($)		3 Months Ended
	Sep. 12, 2016	Mar. 31, 2022	Mar. 31, 2021
Loan Servicing Agreement
Transactions with Affiliates
Base servicing fees per month for REO	$ 75
Base servicing fees per month for fixed-rate non-distressed loans subserviced	7.50
Base servicing fees per month for adjustable rate non-distressed loans subserviced	8.50
Supplemental fee per month for each distressed whole loan	25
Minimum \| Loan Servicing Agreement
Transactions with Affiliates
Servicing fees amount per month for current loans	30
Additional servicing fee amount per month for delinquent loans	10
Maximum \| Loan Servicing Agreement
Transactions with Affiliates
Servicing fees amount per month for current loans	95
Additional servicing fee amount per month for delinquent loans	$ 55
PennyMac Mortgage Investment Trust
Summary of mortgage loan servicing fees earned
Loan servicing fees		$ 21,088,000	$ 19,093,000
PennyMac Mortgage Investment Trust \| Loans acquired for sale at fair value
Summary of mortgage loan servicing fees earned
Loan servicing fees		264,000	543,000
PennyMac Mortgage Investment Trust \| Loans at fair value
Summary of mortgage loan servicing fees earned
Loan servicing fees		210,000	137,000
PennyMac Mortgage Investment Trust \| Mortgage servicing rights
Summary of mortgage loan servicing fees earned
Loan servicing fees		$ 20,614,000	$ 18,413,000