FAIR VALUE DISCLOSURES - Quantitative Information about Level 3 (Details) $ in Millions	3 Months Ended	9 Months Ended
	Mar. 31, 2023 USD ($)	Sep. 30, 2022	Dec. 31, 2022 USD ($)
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Market risk benefits	$ 15,061		$ 15,766
Assets for market risk benefits	629		490
Discounted cash flow \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 248		$ 247
Discount Rate \| Discounted cash flow \| Minimum \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.019		0.019
Discount Rate \| Discounted cash flow \| Maximum \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.104		0.104
Discount Rate \| Discounted cash flow \| Weighted Average \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.046		0.045
Expected Revenue Growth Rate \| Discounted cash flow \| Minimum \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.020		0.020
Expected Revenue Growth Rate \| Discounted cash flow \| Maximum \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.839		0.839
Expected Revenue Growth Rate \| Discounted cash flow \| Weighted Average \| Alliance Bernstein \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.103		0.115
Corporate \| Matrix Pricing Model \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 475		$ 417
Corporate \| Market Comparable Companies \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 1,001		$ 1,029
Corporate \| Spread Over Benchmark \| Matrix Pricing Model \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0020		0.0020
Corporate \| Spread Over Benchmark \| Matrix Pricing Model \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0270		0.0797
Corporate \| Spread Over Benchmark \| Matrix Pricing Model \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0175		0.0205
Corporate \| EBITDA Multiple \| Market Comparable Companies \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	5.3		5.3
Corporate \| EBITDA Multiple \| Market Comparable Companies \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	31.5		35.8
Corporate \| EBITDA Multiple \| Market Comparable Companies \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	14.7		13.6
Corporate \| Discount Rate \| Market Comparable Companies \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.083		0.090
Corporate \| Discount Rate \| Market Comparable Companies \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.248		0.457
Corporate \| Discount Rate \| Market Comparable Companies \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.100		0.119
Corporate \| Cash Flow Multiples \| Market Comparable Companies \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.5		0.0
Corporate \| Cash Flow Multiples \| Market Comparable Companies \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	11.0		10.3
Corporate \| Cash Flow Multiples \| Market Comparable Companies \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	6.8		6.1
Corporate \| Loan to Value \| Market Comparable Companies \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00000		0.000
Corporate \| Loan to Value \| Market Comparable Companies \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00687		0.404
Corporate \| Loan to Value \| Market Comparable Companies \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00009		0.120
Trading Securities, at Fair Value \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 55		$ 55
Measurement input	7 years	7 years
Trading Securities, at Fair Value \| Revenue/Earnings Multiple \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	8.3		8.3
Trading Securities, at Fair Value \| Discount Factor \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.100		0.1000
Other equity investments \| Market Comparable Companies \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value			$ 4
Other equity investments \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 2
Other equity investments \| Revenue/Earnings Multiple \| Market Comparable Companies \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input			0.5
Other equity investments \| Revenue/Earnings Multiple \| Market Comparable Companies \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input			10.8
Other equity investments \| Revenue/Earnings Multiple \| Market Comparable Companies \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input			2.4
Other equity investments \| Revenue/Earnings Multiple \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	7.0
Other equity investments \| Revenue/Earnings Multiple \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	11.0
Other equity investments \| Revenue/Earnings Multiple \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	9.2
Embedded Derivative, GMIB Reinsurance \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 10,676		$ 10,423
Embedded Derivative, GMIB Reinsurance \| Lapse Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0026		0.0026
Embedded Derivative, GMIB Reinsurance \| Lapse Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2623		0.2623
Embedded Derivative, GMIB Reinsurance \| Lapse Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0152		0.0158
Embedded Derivative, GMIB Reinsurance \| Withdrawal Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006		0.0006
Embedded Derivative, GMIB Reinsurance \| Withdrawal Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.1093		0.1093
Embedded Derivative, GMIB Reinsurance \| Withdrawal Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0070		0.0069
Embedded Derivative, GMIB Reinsurance \| Utilization Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004		0.0004
Embedded Derivative, GMIB Reinsurance \| Utilization Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.6666		0.6666
Embedded Derivative, GMIB Reinsurance \| Utilization Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0742		0.0739
Embedded Derivative, GMIB Reinsurance \| Non-Performance Risk \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0065		0.0054
Embedded Derivative, GMIB Reinsurance \| Non-Performance Risk \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0149		0.0124
Embedded Derivative, GMIB Reinsurance \| Non-Performance Risk \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0069		0.0069
Embedded Derivative, GMIB Reinsurance \| Volatility Rate - Equity \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.17		0.14
Embedded Derivative, GMIB Reinsurance \| Volatility Rate - Equity \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.26		0.32
Embedded Derivative, GMIB Reinsurance \| Volatility Rate - Equity \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.22		0.24
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001		0.0001
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017		0.0017
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285		0.0287
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006		0.0006
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0052		0.0052
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285		0.0287
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0032		0.0032
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000		0.4000
Embedded Derivative, GMIB Reinsurance \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285		0.0287
Direct MRB \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 14,432		$ 15,276
Direct MRB \| Lapse Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0026		0.0026
Direct MRB \| Lapse Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.3542		0.3542
Direct MRB \| Lapse Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0277		0.0301
Direct MRB \| Withdrawal Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0000		0.0000
Direct MRB \| Withdrawal Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.1093		0.1093
Direct MRB \| Withdrawal Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0062		0.0068
Direct MRB \| Non-Performance Risk \| Discounted cash flow \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	191		0.0157
Direct MRB \| Non-Performance Risk \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	191		0.0157
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001		0.0001
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017		0.0017
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 0 - 40 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0218		0.0243
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006		0.0006
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0052		0.0052
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 41 - 60 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0218		0.0243
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0032		0.0032
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000		0.4000
Direct MRB \| Mortality Rate \| Discounted cash flow \| Ages 61 - 115 \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0218		0.0243
Direct MRB \| Annuitization Rate \| Discounted cash flow \| Minimum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004		0.0004
Direct MRB \| Annuitization Rate \| Discounted cash flow \| Maximum \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1.0000		1.0000
Direct MRB \| Annuitization Rate \| Discounted cash flow \| Weighted Average \| Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0499		0.0553