v3.25.2
Fair Value - Summary of Financial Statement Items Measured at Fair Value on Recurring Basis (Detail) - USD ($)
$ in Thousands
Jun. 30, 2031
Jun. 30, 2030
Jun. 30, 2029
Jun. 30, 2028
Jun. 30, 2027
Jun. 30, 2026
Jun. 30, 2025
Mar. 31, 2025
Dec. 31, 2024
Jun. 30, 2024
Mar. 31, 2024
Dec. 31, 2023
Assets:                        
Short-term investments             $ 108,586   $ 103,198      
Mortgage-backed securities             3,967,045   4,063,706      
Loans acquired for sale             2,616,251   2,116,318      
Derivative assets             68,247   96,251      
Derivative assets, Netting             (16,321)   (39,411)      
Total derivative assets after netting             51,926   56,840      
Mortgage servicing rights             3,739,106 $ 3,770,034 3,867,394 $ 3,941,861 $ 3,951,737 $ 3,919,107
Liabilities:                        
Interest-only security payable $ 36,553 $ 0 $ 0 $ 0 $ 0 $ 0 36,553   34,222      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             75,640   11,207      
Derivative liabilities, Netting             (72,645)   (7,916)      
Total derivative liabilities after netting             2,995   3,291      
Total derivative and credit risk transfer strip liabilities             13,474   7,351      
Credit Risk Transfer / CRT Derivatives [Member]                        
Assets:                        
Derivative assets [1]             31,147   29,377      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             0   0      
Interest Rate Lock Commitments [Member]                        
Assets:                        
Derivative assets [1]             6,666   3,562      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             181   3,118      
Forward Purchase Contracts [Member]                        
Assets:                        
Derivative assets [1]             21,510   614      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             16   6,336      
Forward Sales Contracts [Member]                        
Assets:                        
Derivative assets [1]             227   54,056      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             75,443   1,753      
Call Options on Interest Rate Futures Purchase Contracts [Member]                        
Assets:                        
Derivative assets [1]             8,638   156      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             0   0      
Put Options On Interest Rate Futures Purchase Contracts [Member]                        
Assets:                        
Derivative assets [1]             59   6,372      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             0   0      
MBS Put Options [Member]                        
Assets:                        
Derivative assets [1]             0   2,114      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities [1]             0   0      
PennyMac Financial Services, Inc. [Member]                        
Assets:                        
Total derivative assets after netting             1,038          
PennyMac Financial Services, Inc. [Member] | Forward Purchase Contracts [Member]                        
Assets:                        
Derivative assets             1,038   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member]                        
Assets:                        
Short-term investments             108,586   103,198      
Mortgage-backed securities             3,967,045   4,063,706      
Loans acquired for sale             2,616,251   2,116,318      
Loans held for investment             4,566,532   2,193,575      
Total Assets             15,050,484   12,401,031      
Derivative assets             68,247   96,251      
Derivative assets, Netting             (16,321)   (39,411)      
Total derivative assets after netting             51,926   56,840      
Mortgage servicing rights             3,739,106   3,867,394      
Liabilities:                        
Interest-only security payable             36,553   34,222      
Asset-backed financings of the variable interest entities             4,176,128   2,040,375      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             75,640   11,207      
Derivative liabilities, Netting             (72,645)   (7,916)      
Total derivative liabilities after netting             2,995   3,291      
Total derivative and credit risk transfer strip liabilities             13,474   7,351      
Total liabilities             4,226,155   2,081,948      
Recurring [Member] | Credit Risk Transfer Strips [Member]                        
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             10,479   4,060      
Recurring [Member] | Credit Risk Transfer / CRT Derivatives [Member]                        
Assets:                        
Derivative assets             31,147   29,377      
Recurring [Member] | Level 1 [Member]                        
Assets:                        
Short-term investments             108,586   103,198      
Mortgage-backed securities             (0)   0      
Loans acquired for sale             (0)   0      
Loans held for investment             0   0      
Total Assets             117,283   109,726      
Derivative assets             8,697   6,528      
Derivative assets, Netting             0   0      
Total derivative assets after netting             8,697   6,528      
Mortgage servicing rights             0   0      
Liabilities:                        
Interest-only security payable             0   0      
Asset-backed financings of the variable interest entities             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Derivative liabilities, Netting             0   0      
Total derivative liabilities after netting             0   0      
Total derivative and credit risk transfer strip liabilities             0   0      
Total liabilities             0   0      
Recurring [Member] | Level 1 [Member] | Credit Risk Transfer Strips [Member]                        
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Level 1 [Member] | Credit Risk Transfer / CRT Derivatives [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | Level 2 [Member]                        
Assets:                        
Short-term investments             0   0      
Mortgage-backed securities             3,887,993   3,977,446      
Loans acquired for sale             2,609,086   2,108,347      
Loans held for investment             4,564,678   2,191,709      
Total Assets             11,084,532   8,334,286      
Derivative assets             21,737   56,784      
Derivative assets, Netting             0   0      
Total derivative assets after netting             21,737   56,784      
Mortgage servicing rights             0   0      
Liabilities:                        
Interest-only security payable             0   0      
Asset-backed financings of the variable interest entities             4,176,128   2,040,375      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             75,459   8,089      
Derivative liabilities, Netting             0   0      
Total derivative liabilities after netting             75,459   8,089      
Total derivative and credit risk transfer strip liabilities             75,459   8,089      
Total liabilities             4,251,587   2,048,464      
Recurring [Member] | Level 2 [Member] | Credit Risk Transfer Strips [Member]                        
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Level 2 [Member] | Credit Risk Transfer / CRT Derivatives [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | Level 3 [Member]                        
Assets:                        
Short-term investments             0   0      
Mortgage-backed securities             79,052   86,260      
Loans acquired for sale             7,165   7,971      
Loans held for investment             1,854   1,866      
Total Assets             3,864,990   3,996,430      
Derivative assets             37,813   32,939      
Derivative assets, Netting             0   0      
Total derivative assets after netting             37,813   32,939      
Mortgage servicing rights             3,739,106   3,867,394      
Liabilities:                        
Interest-only security payable             36,553   34,222      
Asset-backed financings of the variable interest entities             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             181   3,118      
Derivative liabilities, Netting             0   0      
Total derivative liabilities after netting             181   3,118      
Total derivative and credit risk transfer strip liabilities             10,660   7,178      
Total liabilities             47,213   41,400      
Recurring [Member] | Level 3 [Member] | Credit Risk Transfer Strips [Member]                        
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             10,479   4,060      
Recurring [Member] | Level 3 [Member] | Credit Risk Transfer / CRT Derivatives [Member]                        
Assets:                        
Derivative assets             31,147   29,377      
Recurring [Member] | Interest Rate Lock Commitments [Member]                        
Assets:                        
Derivative assets             6,666   3,562      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             181   3,118      
Recurring [Member] | Interest Rate Lock Commitments [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Interest Rate Lock Commitments [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Interest Rate Lock Commitments [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             6,666   3,562      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             181   3,118      
Recurring [Member] | Forward Purchase Contracts [Member]                        
Assets:                        
Derivative assets             21,510   614      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             16   6,336      
Recurring [Member] | Forward Purchase Contracts [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Forward Purchase Contracts [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             21,510   614      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             16   6,336      
Recurring [Member] | Forward Purchase Contracts [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Forward Sales Contracts [Member]                        
Assets:                        
Derivative assets             227   54,056      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             75,443   1,753      
Recurring [Member] | Forward Sales Contracts [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Forward Sales Contracts [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             227   54,056      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             75,443   1,753      
Recurring [Member] | Forward Sales Contracts [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             0   0      
Derivative and credit risk transfer strip liabilities:                        
Derivative liabilities             0   0      
Recurring [Member] | Call Options on Interest Rate Futures Purchase Contracts [Member]                        
Assets:                        
Derivative assets             8,638   156      
Recurring [Member] | Call Options on Interest Rate Futures Purchase Contracts [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             8,638   156      
Recurring [Member] | Call Options on Interest Rate Futures Purchase Contracts [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | Call Options on Interest Rate Futures Purchase Contracts [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | Put Options On Interest Rate Futures Purchase Contracts [Member]                        
Assets:                        
Derivative assets             59   6,372      
Recurring [Member] | Put Options On Interest Rate Futures Purchase Contracts [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             59   6,372      
Recurring [Member] | Put Options On Interest Rate Futures Purchase Contracts [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | Put Options On Interest Rate Futures Purchase Contracts [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             0   0      
Recurring [Member] | MBS Put Options [Member]                        
Assets:                        
Derivative assets                 2,114      
Recurring [Member] | MBS Put Options [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets                 0      
Recurring [Member] | MBS Put Options [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets                 2,114      
Recurring [Member] | MBS Put Options [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets                 $ 0      
Recurring [Member] | PennyMac Financial Services, Inc. [Member]                        
Assets:                        
Derivative assets             1,038          
Recurring [Member] | PennyMac Financial Services, Inc. [Member] | Level 1 [Member]                        
Assets:                        
Derivative assets             0          
Recurring [Member] | PennyMac Financial Services, Inc. [Member] | Level 2 [Member]                        
Assets:                        
Derivative assets             1,038          
Recurring [Member] | PennyMac Financial Services, Inc. [Member] | Level 3 [Member]                        
Assets:                        
Derivative assets             $ 0          
[1] All hedging derivatives are interest rate derivatives that are used as economic hedges.