v3.26.1
Transactions with Related Parties - Summary of Aggregation and Securitization Activities (Detail) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Related Party Transaction [Line Items]        
Unpaid principal balance of loans sold to PLS:   $ 26,487,256   $ 46,639,932
PennyMac Loan Services, LLC [Member]        
Related Party Transaction [Line Items]        
Loan fulfillment fees earned by PLS $ 5,023 5,814 $ 10,760 11,104
Unpaid principal balance of loans fulfilled by PLS 2,564,511 3,085,840 5,361,055 5,867,562
Sourcing fees received from PLS included in Net gains on loans held for sale   2,658   4,673
Purchases of loans held for sale from PLS [1] $ 4,998,391 1,034,884 $ 9,378,680 1,689,692
Tax service fees paid to PLS   502   979
PennyMac Loan Services, LLC [Member] | Government Guaranteed Or Insured [Member]        
Related Party Transaction [Line Items]        
Unpaid principal balance of loans sold to PLS:   12,966,563   24,158,443
PennyMac Loan Services, LLC [Member] | Conventional Conforming [Member]        
Related Party Transaction [Line Items]        
Unpaid principal balance of loans sold to PLS:   $ 13,520,693   $ 22,481,489
[1] Amount includes loans purchased from PLS subject to the fulfillment agreement as well as other loans purchased from PLS.