INVESTMENTS - Transitional Real Estate Loans by Key Credit Quality Indicators (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total Financing Receivable	$ 13,641	$ 11,960
Transitional real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
2022	1,909
2021	2,468
2020	300
2019	1,076
2018	698
Prior	51
Total Financing Receivable	6,502
Transitional real estate loans \| Loan to Value Ratio, 0.00% to 59.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2022	534
2021	585
2020	137
2019	192
2018	102
Prior	0
Total Financing Receivable	1,550
Transitional real estate loans \| Loan to Value Ratio, 60.00% to 69.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2022	580
2021	796
2020	56
2019	504
2018	437
Prior	50
Total Financing Receivable	2,423
Transitional real estate loans \| Loan to Value Ratio, 70.00% to 79.99%
Financing Receivable, Credit Quality Indicator [Line Items]
2022	780
2021	928
2020	107
2019	380
2018	159
Prior	1
Total Financing Receivable	2,355
Transitional real estate loans \| Loan-to-Value Ratio, 80.00% or greater
Financing Receivable, Credit Quality Indicator [Line Items]
2022	15
2021	159
2020	0
2019	0
2018	0
Prior	0
Total Financing Receivable	$ 174

Amortized cost of financing receivable originated more than five years prior to current fiscal year. Excludes net investment in lease.

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