Borrowings (Schedule of Debt Repayments) (Details) $ in Thousands	Jun. 30, 2022 USD ($)
Debt Instrument [Line Items]
Expected principal repayments related to consolidated residential mortgage loan securitizations	$ 1,178,000
Repurchase Agreements
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	2,724,458
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	140,764
2020 Scheduled Repayment of Principal	0
2021 Scheduled Repayment of Principal	0
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	0
Total Scheduled Repayment of Principal	2,865,222
Other Secured Borrowings
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	436,345
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	285,525
2020 Scheduled Repayment of Principal	212,644
2021 Scheduled Repayment of Principal	161,125
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	127,618
Total Scheduled Repayment of Principal	1,223,257
Senior Notes
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	86,000
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	0
2020 Scheduled Repayment of Principal	0
2021 Scheduled Repayment of Principal	0
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	210,000
Total Scheduled Repayment of Principal	296,000
Total
Debt Instrument [Line Items]
Long-term Debt, Maturities, Repayments of Principal in Next Rolling Twelve Months	3,246,803
Long-term Debt, Maturities, Repayments of Principal in Rolling Year Two	426,289
2020 Scheduled Repayment of Principal	212,644
2021 Scheduled Repayment of Principal	161,125
Long-term Debt, Maturities, Repayments of Principal in Rolling after Year Five	337,618
Total Scheduled Repayment of Principal	$ 4,384,479

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+ References

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+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 3
-Subparagraph (SX 210.12-04(a))
-URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e24072-122690

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