FAIR VALUE DISCLOSURES - Quantitative Information About Level 3 (Details) - Level 3 $ in Millions	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Corporate | Matrix pricing model
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 248	$ 28
Corporate | Market comparable companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 888	$ 1,148
Corporate | Spread over benchmark | Matrix pricing model | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0020	0.0045
Corporate | Spread over benchmark | Matrix pricing model | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0270	0.0195
Corporate | Spread over benchmark | Matrix pricing model | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0146	0.0152
Corporate | EBITDA multiple | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	4.9	3.5
Corporate | EBITDA multiple | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	62.3	33.1
Corporate | EBITDA multiple | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	13.0	10.8
Corporate | Discount rate | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.062	0.00056
Corporate | Discount rate | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.215	0.00284
Corporate | Discount rate | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.091	0.00086
Corporate | Cash flow multiples | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.5	1.9
Corporate | Cash flow multiples | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	10.0	25.0
Corporate | Cash flow multiples | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	5.5	6.8
Corporate | Loan to value | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.031
Corporate | Loan to value | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.634
Corporate | Loan to value | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.308
Other equity investments | Market comparable companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 4	$ 2
Other equity investments | Revenue multiple | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	7.8	9.7
Other equity investments | Revenue multiple | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	10.3	26.4
Other equity investments | Revenue multiple | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	9.5	18.5
GMIB reinsurance contract asset | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 2,068	$ 2,859
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0045	0.00006
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.16
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0265	0.00000169
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027	0
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.02
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0093	0.00000091
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004	0
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.006044	0.61
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0527	0.00000582
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0057	0.0043
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0093	0.0085
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.0050
GMIB reinsurance contract asset | Volatility rates - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.11	0.07
GMIB reinsurance contract asset | Volatility rates - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.31	0.32
GMIB reinsurance contract asset | Volatility rates - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.000024	0.24
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Minimum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001	0.00000001
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Minimum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006	0.00000007
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Minimum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0031	0.00000042
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Maximum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017	0.00000018
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Maximum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0053	0.00000054
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Maximum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000	0.00004220
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Weighted Average | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0279	0.00000280
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Weighted Average | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0279	0.00000280
GMIB reinsurance contract asset | Mortality rates | Discounted cash flow | Weighted Average | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0279	0.00000280
Amounts due from reinsurers | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 5,813
Amounts due from reinsurers | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0045
Amounts due from reinsurers | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086
Amounts due from reinsurers | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0170
Amounts due from reinsurers | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027
Amounts due from reinsurers | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866
Amounts due from reinsurers | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0118
Amounts due from reinsurers | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004
Amounts due from reinsurers | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.6044
Amounts due from reinsurers | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0720
Amounts due from reinsurers | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0037
Amounts due from reinsurers | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0037
Amounts due from reinsurers | Volatility rates - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.11
Amounts due from reinsurers | Volatility rates - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.31
Amounts due from reinsurers | Volatility rates - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Minimum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Minimum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Minimum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0031
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Maximum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Maximum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0053
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Maximum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Weighted Average | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Weighted Average | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217
Amounts due from reinsurers | Mortality rates | Discounted cash flow | Weighted Average | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217
GMIBNLG | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 8,503	$ 10,713
GMIBNLG | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0104	0.00011
GMIBNLG | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2357	0.00257
GMIBNLG | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0355	0.00000319
GMIBNLG | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027	0.00004
GMIBNLG | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.02
GMIBNLG | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0104	0.00000093
GMIBNLG | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0111	0.00960
GMIBNLG | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0111
GMIBNLG | Mortality rates | Discounted cash flow | Minimum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001	0.00000001
GMIBNLG | Mortality rates | Discounted cash flow | Minimum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0007	0.00000006
GMIBNLG | Mortality rates | Discounted cash flow | Minimum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0044	0.00000041
GMIBNLG | Mortality rates | Discounted cash flow | Maximum | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0019	0.00000019
GMIBNLG | Mortality rates | Discounted cash flow | Maximum | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0057	0.00000053
GMIBNLG | Mortality rates | Discounted cash flow | Maximum | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4360	0.00004139
GMIBNLG | Mortality rates | Discounted cash flow | Weighted Average | Age 0-40
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.00000156
GMIBNLG | Mortality rates | Discounted cash flow | Weighted Average | Age 41-60
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.00000156
GMIBNLG | Mortality rates | Discounted cash flow | Weighted Average | Ages 61 - 115
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.00000156
GMIBNLG | Annuitization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0003	0
GMIBNLG | Annuitization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1.0000	1
GMIBNLG | Annuitization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0524	0.00000551
GWBL/GMWB | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ 99	$ 190
GWBL/GMWB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.0000008
GWBL/GMWB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.16
GWBL/GMWB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0265	0.00000169
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0000	0
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0800	0.08
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0093	0.00000091
GWBL/GMWB | Utilization rate | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1	1
GWBL/GMWB | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0111	0.00960
GWBL/GMWB | Volatility rates - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.11	0.07
GWBL/GMWB | Volatility rates - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.31	0.32
GWBL/GMWB | Volatility rates - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24
GIB | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ (75)	$ 31
GIB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.00008
GIB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.000000156
GIB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0265	0.000169
GIB | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0013	0
GIB | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.02
GIB | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0093	0.000091
GIB | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004	0
GIB | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1.0000	1
GIB | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0527	0.000582
GIB | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0111
GIB | Volatility rates - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.11	0.07
GIB | Volatility rates - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.31	0.32
GIB | Volatility rates - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24
GMAB | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair Value	$ (3)	$ 2
GMAB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.00008
GMAB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.16
GMAB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0265	0.000169
GMAB | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0111	0.00960
GMAB | Volatility rates - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.11	0.07
GMAB | Volatility rates - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.31	0.32
GMAB | Volatility rates - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24