Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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The gross carrying amount of the outstanding balance due under the mortgage loan.

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Amount of the contractual principal due as of the balance sheet date.

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Represents the weighted average duration of a group of mortgage loan receivables.

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Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 4: http://www.xbrl.org/2003/role/disclosureRef
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Reference 6: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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Amount of financing receivable reclassified to held-for-sale.

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Amount of investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

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-Name Accounting Standards Codification
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Loans - Held for Investment (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Investments in loans
Carrying Value	$ 19,006,029	$ 18,480,919
Face Amount	19,161,866	18,521,795
Credit loss allowances	(68,260)	(67,270)
Total net loans	18,937,769	18,413,649	$ 13,166,124	$ 12,139,908
Loans held for investment
Investments in loans
Carrying Value	16,321,517	15,604,119
Face Amount	16,437,364	15,706,124
Credit loss allowances	(68,260)	(67,270)
Loans held-for-sale
Investments in loans
Carrying Value	2,684,512	2,876,800
Face Amount	2,724,502	2,815,671
Total net loans	2,684,512	2,876,800	844,631	1,052,835
Commercial Portfolio Segment
Investments in loans
Carrying Value	14,109,497
Commercial Portfolio Segment \| Loans held for investment
Investments in loans
Carrying Value	14,109,497	13,496,798
Face Amount	14,198,308	13,574,079
Credit loss allowances	(47,979)	(46,600)
Total net loans	14,061,518	13,450,198	10,583,973	9,583,949
Infrastructure Portfolio Segment
Investments in loans
Carrying Value	2,156,399
Infrastructure Portfolio Segment \| Loans held for investment
Investments in loans
Carrying Value	2,156,399	2,048,096
Face Amount	$ 2,181,264	$ 2,071,912
Weighted Average Life	4 years 3 months 18 days	4 years 3 months 18 days
Credit loss allowances	$ (20,281)	$ (20,670)
Total net loans	$ 2,136,118	$ 2,027,426	1,586,808	1,412,440
Infrastructure Portfolio Segment \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	4.80%	4.40%
Residential Portfolio Segment
Investments in loans
Weighted Average Life	29 years 4 months 24 days	29 years 4 months 24 days
Reclassification to held-for-sale	$ 300
Residential Portfolio Segment \| Loans held for investment
Investments in loans
Total net loans	55,621	$ 59,225	$ 150,712	$ 90,684
RMBS, fair value option \| Loans held-for-sale
Investments in loans
Carrying Value	2,299,153	2,590,005
Face Amount	$ 2,331,997	$ 2,525,910
RMBS, fair value option \| Loans held-for-sale \| Weighted-average
Investments in loans
Weighted Average Coupon	4.30%	4.20%
CMBS, fair value option \| Loans held-for-sale
Investments in loans
Carrying Value	$ 385,359	$ 286,795
Face Amount	$ 392,505	$ 289,761
Weighted Average Life	9 years 7 months 6 days	9 years
CMBS, fair value option \| Loans held-for-sale \| Weighted-average
Investments in loans
Weighted Average Coupon	4.90%	4.00%
First mortgage loan participation \| Loans held for investment
Investments in loans
Carrying Value	$ 13,596,590	$ 12,991,099
Face Amount	$ 13,684,558	$ 13,067,524
Weighted Average Life	1 year 10 months 24 days	1 year 10 months 24 days
First mortgage loan participation \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	4.60%	4.50%
Subordinated mortgages \| Loans held for investment
Investments in loans
Carrying Value	$ 70,934	$ 70,771
Face Amount	$ 72,399	$ 72,371
Weighted Average Life	2 years 7 months 6 days	2 years 9 months 18 days
Subordinated mortgages \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	10.10%	10.00%
Mezzanine Loans
Investments in loans
Total net loans	$ 1,300,000	$ 1,400,000
Mezzanine Loans \| Loans held for investment
Investments in loans
Carrying Value	424,835	417,504
Face Amount	$ 422,752	$ 415,155
Weighted Average Life	1 year 3 months 18 days	1 year 4 months 24 days
Mezzanine Loans \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	9.60%	9.40%
Other \| Loans held for investment
Investments in loans
Carrying Value	$ 17,138	$ 17,424
Face Amount	$ 18,599	$ 19,029
Weighted Average Life	2 years	2 years 1 month 6 days
Other \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	8.20%	8.20%
Residential loans, fair value option \| Loans held for investment
Investments in loans
Carrying Value	$ 55,621	$ 59,225
Face Amount	$ 57,792	$ 60,133
Residential loans, fair value option \| Loans held for investment \| Weighted-average
Investments in loans
Weighted Average Coupon	6.00%	6.00%
Residential loans, fair value option \| Residential Portfolio Segment \| Loans held for investment
Investments in loans
Carrying Value	$ 55,621