INVESTMENTS - Maturity of Residential and Commercial Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total	$ 52,292,783	$ 39,780,370
Residential And Commercial Portfolio Segment
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remainder of 2024	955,237
2025	4,177,116
2026	7,870,115
2027	6,667,903
2028	1,778,820
2029	1,468,766
Thereafter	23,141,036
Total	46,058,993	34,584,023
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remainder of 2024	30,659
2025	13,247
2026	641,891
2027	694,995
2028	127,673
2029	11,855
Thereafter	19,646,185
Total	21,166,505	12,722,778
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Remainder of 2024	924,578
2025	4,163,869
2026	7,228,224
2027	5,972,908
2028	1,651,147
2029	1,456,911
Thereafter	3,494,851
Total	$ 24,892,488	$ 21,861,245

Financing Receivable, Before Allowance For Credit Loss, Maturity, After Year Five

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Financing Receivable, Before Allowance For Credit Loss, Maturity, Remainder Of Fiscal Year

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Financing Receivable, Before Allowance For Credit Loss, Maturity, Year Five

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Financing Receivable, Before Allowance For Credit Loss, Maturity, Year Four

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Financing Receivable, Before Allowance For Credit Loss, Maturity, Year Three

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 310
-SubTopic 20
-Name Accounting Standards Codification
-Section 40
-Paragraph 7
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481628/310-20-40-7

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-Topic 310
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 2
-Publisher FASB
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Amount, before allowance for credit loss, of financing receivable maturing in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name Regulation S-K (SK)
-Number 229
-Section 1404
-Paragraph a
-Subparagraph (1)
-Publisher SEC

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- Definition

Amortized cost excluding accrued interest, before allowance for credit loss, of financing receivable. Excludes net investment in lease.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 326
-SubTopic 20
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-Publisher FASB
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