OFFSETTING OF ASSETS AND LIABILITIES - Schedule of Derivative Instruments by Assets (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Offsetting of Assets
Gross Amounts of Recognized Assets, Derivatives Not Subject to a master netting arrangement	$ 1,624	$ 1,636
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	1,624	1,636
Gross Amounts Not Offset in the statement of Financial Position, Financial Instruments, subject to master netting arrangement	950	865
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	316	290
Net Amount	358	481
Free-Standing derivatives
Offsetting of Assets
Gross Amounts of Recognized Assets, subject to master netting arrangement	1,335	1,337
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	1,335	1,337
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments, not subject to master netting arrangement	950	865
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	316	290
Net Amount	69	182
Total derivatives, subject to a master netting arrangement or similar arrangement
Offsetting of Assets
Gross Amounts of Recognized Assets, subject to master netting arrangement	1,335	1,337
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	1,335	1,337
Gross Amounts Not Offset in the Statement of Financial Position, Financial Instruments, not subject to master netting arrangement	950	865
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	316	290
Net Amount	69	182
Embedded derivative - Modco reinsurance treaties
Offsetting of Assets
Gross Amounts of Recognized Assets, Derivatives Not Subject to a master netting arrangement	68	101
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	68	101
Gross Amounts Not Offset in the statement of Financial Position, Financial Instruments, subject to master netting arrangement	0	0
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	0	0
Net Amount	68	101
Embedded derivative - GLWB
Offsetting of Assets
Gross Amounts of Recognized Assets, Derivatives Not Subject to a master netting arrangement	161	138
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	161	138
Gross Amounts Not Offset in the statement of Financial Position, Financial Instruments, subject to master netting arrangement	0	0
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	0	0
Net Amount	161	138
Embedded derivative - FIA
Offsetting of Assets
Gross Amounts of Recognized Assets, Derivatives Not Subject to a master netting arrangement	60	60
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	60	60
Gross Amounts Not Offset in the statement of Financial Position, Financial Instruments, subject to master netting arrangement	0	0
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	0	0
Net Amount	60	60
Total derivatives, not subject to a master netting arrangement or similar arrangement
Offsetting of Assets
Gross Amounts of Recognized Assets, Derivatives Not Subject to a master netting arrangement	289	299
Gross Amounts Offset in the Balance Sheets	0	0
Net Amounts of Assets Presented in the Balance Sheets	289	299
Gross Amounts Not Offset in the statement of Financial Position, Financial Instruments, subject to master netting arrangement	0	0
Gross Amounts Not Offset in the Statement of Financial Position, Cash collateral received	0	0
Net Amount	$ 289	$ 299

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and elected not to be offset.

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