Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
Cash flows from operating activities
Net income	$ 73,042	$ 85,321
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Change in fair value of mortgage servicing rights	78,758	225,441
Mortgage servicing rights hedging results	108,179	30,895
Net gains on loans acquired for sale	(26,678)	(10,919)
Net gains on investments and financings	(20,010)	(123,305)
Accrual of unearned discounts and amortization of purchase premiums on mortgage-backed securities, loans at fair value, and asset-backed financings	(7,049)	2,813
(Accrual) amortization of (premiums) debt issuance costs	9,106	7,463
Results of real estate acquired in settlement of loans	90	0
Share-based compensation expense	2,192	2,001
Purchase of loans acquired for sale from nonaffiliates	(41,331,303)	(41,942,691)
Sale to nonaffiliates and repayment of loans acquired for sale	4,168,594	10,469,060
Repurchase of loans subject to representations and warranties	(17,706)	(36,702)
Decrease in servicing advances	107,074	84,886
Repurchase of real estate previously sold as loans acquired for sale	0	(443)
Increase in other assets	(153,564)	(63,247)
Decrease in accounts payable and accrued liabilities	(231,719)	(54,811)
Increase (decrease) in due to PennyMac Financial Services, Inc.	151	(11,326)
Decrease in income taxes payable	(19,102)	(3,806)
Net cash (used in) provided by operating activities	(98,571)	743,524
Cash flows from investing activities
Net (increase) decrease in short-term investments	(207,958)	10,234
Purchase of mortgage-backed securities	(399,460)	(3,044,317)
Sale and repayment of mortgage-backed securities	1,103,969	2,789,954
Repurchase of loans at fair value	0	(119)
Repayment of loans at fair value	49,223	47,064
Net settlement of derivative financial instruments	(6,005)	1,805
Distribution from credit risk transfer arrangements	76,583	88,479
Purchase of mortgage servicing rights	(26,484)	0
Transfer of mortgage servicing rights relating to delinquent loans to Agency	(216)	723
Sale of real estate acquired in settlement of loans	647	2,609
Decrease (increase) in margin deposits	173,182	(29,088)
Net cash provided by (used in) investing activities	763,481	(132,656)
Cash flows from financing activities
Sale of assets under agreements to repurchase	54,582,250	64,121,374
Repurchase of assets sold under agreements to repurchase	(55,506,481)	(64,823,803)
Issuance of mortgage loan participation purchase and sale agreements	692,186	1,066,247
Repayment of mortgage loan participation purchase and sale agreements	(678,604)	(1,031,460)
Issuance of notes payable secured by credit risk transfer and mortgage servicing assets	908,000	400,000
Repayment of notes payable secured by credit risk transfer and mortgage servicing assets	(882,425)	(46,743)
Issuance of asset-backed financing of variable interest entities	8,137	0
Repayment of asset-backed financings of variable interest entities	(47,806)	(45,747)
Issuance of unsecured senior notes	216,500	0
Payment of debt issuance costs	(14,663)	(4,302)
Payment of dividends to preferred shareholders	(20,910)	(20,909)
Payment of dividends to common shareholders	(69,599)	(71,008)
Payment of vested share-based compensation tax withholdings	(1,846)	(567)
Repurchase of common shares of beneficial interest	0	(27,011)
Net cash used in financing activities	(815,261)	(483,929)
Net (decrease) increase in cash	(150,351)	126,939
Cash at beginning of period	281,085	111,866
Cash at end of period	130,734	238,805
Payments, net:
Income taxes	7,051	4,139
Interest	383,862	365,367
Non cash investing activities:
Receipt of mortgage servicing rights as proceeds from sales of loans	71,868	191,365
Unsettled purchase of mortgage servicing rights	2,944	0
Transfer of loans and advances to real estate acquired in settlement of loans	0	803
Non-cash financing activities:
Dividends declared, not paid	34,850	34,804
PennyMac Loan Services, LLC [Member]
Adjustments to reconcile net income to net cash (used in) provided by operating activities:
Sale of loans acquired for sale to PennyMac Financial Services, Inc.	37,161,319	32,087,158
Decrease (increase) in due from PennyMac Financial Services, Inc.	$ 55	$ (4,264)