Represents the shareholders' equity levels upon which base management fee rates are based effective February 1, 2013.

No definition available.

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- Definition

Management agreement expiration date.

+ References

No definition available.

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- Definition

Management agreement maturity renewal term.

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No definition available.

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- Definition

Mortgage-backed security yield average number of year.

+ References

No definition available.

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- Definition

Represents a threshold return on shareholders' equity as defined before performance incentive fees are chargeable to the Company.

+ References

No definition available.

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- Definition

Represents the net income expressed as a percentage of shareholders' equity upon which performance incentive fees are based.

+ References

No definition available.

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- Definition

Represents the maximum percentage of performance incentive fee payable in shares of the Company's common stock.

+ References

No definition available.

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- Definition

Represents the net income expressed as a percentage of shareholders' equity upon which performance incentive fees are based.

+ References

No definition available.

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- Definition

Represents the base management fee rate based on shareholders' equity as defined that existed before February 1, 2013.

+ References

No definition available.

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- Definition

Description of the fee payable by the company in the event of termination of the management agreement.

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No definition available.

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- 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.

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- Definition

Description of the nature of the payments to managing member or general partner for incentive rights held including the fee rate, basis of calculation, relevant accounting period, whether the fee is paid to an entity other than the managing member or general partner, or if the fee is waived.

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- Definition

Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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Amount of liabilities classified as other.

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Transactions with Related Parties - Management Agreement - Additional Information (Detail) - USD ($)	6 Months Ended
	Jun. 30, 2025	Dec. 31, 2024
Mortgage Loans On Real Estate [Line Items]
MBS yield, average number of year	30 years
Investment, Type [Extensible Enumeration]	Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Management agreement expiration date	Dec. 31, 2029
Management agreement maturity renewal term	18 months
Termination fees, description	The termination fee is equal to three times the sum of (a) the average annual base management fee, and (b) the average annual performance incentive fee earned by PCM, in each case during the 24-month period before termination of the management agreement.
PNMAC Capital Management LLC [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of change in net income due to quarterly adjustments	8.00%
PMT agreed to reimburse PCM for a payment	$ 165,000
PNMAC Capital Management LLC [Member] \| 1.5% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee annual rate	1.50%
PNMAC Capital Management LLC [Member] \| 1.375% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee annual rate	1.375%
PNMAC Capital Management LLC [Member] \| 1.25% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee annual rate	1.25%
PNMAC Capital Management LLC [Member] \| Net income exceeds 10% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of net income for calculation of performance incentive fees	10.00%
Percentage of return on equity	12.00%
PNMAC Capital Management LLC [Member] \| Net income exceeds 15% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of net income for calculation of performance incentive fees	15.00%
Percentage of return on equity	16.00%
PNMAC Capital Management LLC [Member] \| Net income exceeds 20% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of net income for calculation of performance incentive fees	20.00%
PNMAC Capital Management LLC [Member] \| Maximum [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of performance incentive fee paid in Company's common shares	50.00%
PNMAC Capital Management LLC [Member] \| Maximum [Member] \| 1.5% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee shareholders' equity limit	$ 2,000,000,000
PNMAC Capital Management LLC [Member] \| Maximum [Member] \| 1.375% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee shareholders' equity limit	$ 5,000,000,000
PNMAC Capital Management LLC [Member] \| Maximum [Member] \| Net income exceeds 10% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of return on equity	8.00%
PNMAC Capital Management LLC [Member] \| Maximum [Member] \| Net income exceeds 15% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of return on equity	12.00%
PNMAC Capital Management LLC [Member] \| Maximum [Member] \| Net income exceeds 20% [Member]
Mortgage Loans On Real Estate [Line Items]
Percentage of return on equity	16.00%
PNMAC Capital Management LLC [Member] \| Minimum [Member] \| 1.375% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee shareholders' equity limit	$ 2,000,000,000
PNMAC Capital Management LLC [Member] \| Minimum [Member] \| 1.25% per annum of stockholders equity [Member]
Mortgage Loans On Real Estate [Line Items]
Base management fee shareholders' equity limit	$ 5,000,000,000
PennyMac Financial Services, Inc. [Member]
Mortgage Loans On Real Estate [Line Items]
Performance incentive fee description	The performance incentive fee is equal to the sum of: •10% of the amount by which “net income” for the year exceeds (i) an 8% return on the average “common shareholders’ equity” plus the “high watermark”, up to (ii) a 12% return on “common shareholders’ equity” during the period; plus •15% of the amount by which “net income” for the year exceeds (i) a 12% return on the average “common shareholders’ equity” plus the “high watermark”, up to (ii) a 16% return on “common shareholders’ equity” during the period; plus •20% of the amount by which “net income” for the year exceeds a 16% return on the average “common shareholders’ equity” during the period plus the “high watermark.”
PMT agreed to reimburse PCM for a payment	$ 30,604,000	$ 30,206,000