FAIR VALUE DISCLOSURES - Quantitative Information about Level 3 (Details) - Level 3 $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Discounted cash flow | Alliance Bernstein
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 39	$ 38
Discount rate | Discounted cash flow | Minimum | Alliance Bernstein
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.019	0.019
Discount rate | Discounted cash flow | Maximum | Alliance Bernstein
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.070	0.070
Expected revenue growth rate | Discounted cash flow | Minimum | Alliance Bernstein
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
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
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.079	0.119
Corporate Debt Securities [Member] | Matrix pricing model
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 334	$ 258
Corporate Debt Securities [Member] | Market comparable companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 891	$ 888
Corporate Debt Securities [Member] | Spread over benchmark | Matrix pricing model | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0020	0.0020
Corporate Debt Securities [Member] | Spread over benchmark | Matrix pricing model | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0299	0.0270
Corporate Debt Securities [Member] | Spread over benchmark | Matrix pricing model | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0106	0.0144
Corporate Debt Securities [Member] | EBITDA Multiple | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	5.0	4.9
Corporate Debt Securities [Member] | EBITDA Multiple | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	77.6	62.3
Corporate Debt Securities [Member] | EBITDA Multiple | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	13.9	13.0
Corporate Debt Securities [Member] | Discount rate | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.072	0.062
Corporate Debt Securities [Member] | Discount rate | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.336	0.215
Corporate Debt Securities [Member] | Discount rate | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.098	0.091
Corporate Debt Securities [Member] | Cash flow multiples | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.5	0.5
Corporate Debt Securities [Member] | Cash flow multiples | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	11.6	10.0
Corporate Debt Securities [Member] | Cash flow multiples | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	6.4	5.5
Corporate Debt Securities [Member] | Loan to value | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00000	0.031
Corporate Debt Securities [Member] | Loan to value | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00621	0.634
Corporate Debt Securities [Member] | Loan to value | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.00300	0.308
Trading Securities, at Fair Value | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 52	$ 65
Measurement input	11 years	11 years
Trading Securities, at Fair Value | Revenue/earnings multiple | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	7.3	7.3
Trading Securities, at Fair Value | Discount factor | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.100	0.1000
Other equity investments | Market comparable companies
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 4	$ 4
Other equity investments | Revenue/earnings multiple | Market comparable companies | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	7.7	7.8
Other equity investments | Revenue/earnings multiple | Market comparable companies | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	9.5	10.3
Other equity investments | Revenue/earnings multiple | Market comparable companies | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	9.2	9.5
GMIB reinsurance contract asset | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 1,582	$ 1,848
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0045	0.0045
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.2086
GMIB reinsurance contract asset | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0278	0.0265
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027	0.0027
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.0866
GMIB reinsurance contract asset | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0091	0.0093
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004	0.0004
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.6044	0.6044
GMIB reinsurance contract asset | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0528	0.0527
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0082	0.0057
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0130	0.0093
GMIB reinsurance contract asset | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0084	0.0060
GMIB reinsurance contract asset | Volatility rate - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.09	0.11
GMIB reinsurance contract asset | Volatility rate - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.32	0.31
GMIB reinsurance contract asset | Volatility rate - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 0 - 40 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001	0.0001
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 0 - 40 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017	0.0017
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 0 - 40 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285	0.0279
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 41 - 60 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006	0.0006
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 41 - 60 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0053	0.0053
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 41 - 60 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285	0.0279
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 61 - 115 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0031	0.000031
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 61 - 115 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000	0.004000
GMIB reinsurance contract asset | Mortality rate | Discounted cash flow | Ages 61 - 115 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0285	0.0279
Amount Due from Reinsurers | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 5,056	$ 5,813
Amount Due from Reinsurers | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0045	0.0045
Amount Due from Reinsurers | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.2086
Amount Due from Reinsurers | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0179	0.0170
Amount Due from Reinsurers | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027	0.0027
Amount Due from Reinsurers | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.0866
Amount Due from Reinsurers | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0115	0.0118
Amount Due from Reinsurers | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004	0.0004
Amount Due from Reinsurers | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.6044	0.6044
Amount Due from Reinsurers | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0740	0.0720
Amount Due from Reinsurers | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0048	0.0037
Amount Due from Reinsurers | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0048	37
Amount Due from Reinsurers | Volatility rate - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.09	0.11
Amount Due from Reinsurers | Volatility rate - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.32	0.31
Amount Due from Reinsurers | Volatility rate - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 0 - 40 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001	0.0001
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 0 - 40 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0017	0.0017
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 0 - 40 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217	0.0217
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 41 - 60 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0006	0.0006
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 41 - 60 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0053	0.0053
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 41 - 60 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217	0.0217
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 61 - 115 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0031	0.0031
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 61 - 115 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4000	0.4000
Amount Due from Reinsurers | Mortality rate | Discounted cash flow | Ages 61 - 115 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0217	0.0217
GMIB NLG | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 6,936	$ 8,503
GMIB NLG | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0104	0.000104
GMIB NLG | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2357	0.2357
GMIB NLG | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0369	0.0355
GMIB NLG | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0027	0.000027
GMIB NLG | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.0866
GMIB NLG | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0103	0.0104
GMIB NLG | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0151	0.0111
GMIB NLG | Non-performance risk | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0151	1.11
GMIB NLG | Mortality rate | Discounted cash flow | Ages 0 - 40 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0001	0.00000001
GMIB NLG | Mortality rate | Discounted cash flow | Ages 0 - 40 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0019	0.0019
GMIB NLG | Mortality rate | Discounted cash flow | Ages 0 - 40 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.0162
GMIB NLG | Mortality rate | Discounted cash flow | Ages 41 - 60 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0007	0.0007
GMIB NLG | Mortality rate | Discounted cash flow | Ages 41 - 60 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0057	0.0057
GMIB NLG | Mortality rate | Discounted cash flow | Ages 41 - 60 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.0162
GMIB NLG | Mortality rate | Discounted cash flow | Ages 61 - 115 | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0044	0.000044
GMIB NLG | Mortality rate | Discounted cash flow | Ages 61 - 115 | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.4360	0.4360
GMIB NLG | Mortality rate | Discounted cash flow | Ages 61 - 115 | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0162	0.0162
GMIB NLG | Annuitization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0003	0.00000003
GMIB NLG | Annuitization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1.0000	1.0000
GMIB NLG | Annuitization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0537	0.0524
GWBL/GMWB | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Fair value	$ 83	$ 99
GWBL/GMWB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.000060
GWBL/GMWB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.2086
GWBL/GMWB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0278	0.00000265
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0000	0.00000000
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0800	0.00000800
GWBL/GMWB | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0091	0.00000093
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	0.0151	0.0111
GWBL/GMWB | Volatility rate - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.09	0.11
GWBL/GMWB | Volatility rate - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.32	0.31
GWBL/GMWB | Volatility rate - 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	$ (93)	$ (75)
GIB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.0060
GIB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.2086
GIB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0278	0.0265
GIB | Withdrawal rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0013	0.0013
GIB | Withdrawal rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0866	0.0866
GIB | Withdrawal rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0091	0.0093
GIB | Utilization rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0004	0.0004
GIB | Utilization rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	1.0000	0.010000
GIB | Utilization rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0528	0.0527
GIB | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0151	0.0111
GIB | Volatility rate - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.09	0.11
GIB | Volatility rate - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.32	0.31
GIB | Volatility rate - 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)	$ (3)
GMAB | Lapse rate | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0060	0.000060
GMAB | Lapse rate | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.2086	0.2086
GMAB | Lapse rate | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0278	0.0265
GMAB | Non-performance risk | Discounted cash flow
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.0151	0.0111
GMAB | Volatility rate - Equity | Discounted cash flow | Minimum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.09	0.11
GMAB | Volatility rate - Equity | Discounted cash flow | Maximum
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.32	0.31
GMAB | Volatility rate - Equity | Discounted cash flow | Weighted Average
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Measurement input	0.24	0.24