DERIVATIVES - Offsetting of Financial Assets and Liabilities and Derivative Instruments (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative assets
Assets
Gross Amount Recognized	$ 26	$ 30
Gross Amount Offset in the Balance Sheets	8	13
Net Amount Presented in the Balance Sheets	18	17
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	18	17
Liabilities
Gross Amount Recognized	8	13
Gross Amount Offset in the Balance Sheets	8	13
Net Amount Presented in the Balance Sheets	0	0
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	0	0
Other financial instruments
Assets
Gross Amount Recognized	1	65
Gross Amount Offset in the Balance Sheets	0	0
Net Amount Presented in the Balance Sheets	1	65
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	1	65
Other invested assets
Assets
Gross Amount Recognized	27	95
Gross Amount Offset in the Balance Sheets	8	13
Net Amount Presented in the Balance Sheets	19	82
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	19	82
Other financial liabilities
Liabilities
Gross Amount Recognized	42	72
Gross Amount Offset in the Balance Sheets	0	0
Net Amount Presented in the Balance Sheets	42	72
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	42	72
Other liabilities
Liabilities
Gross Amount Recognized	50	85
Gross Amount Offset in the Balance Sheets	8	13
Net Amount Presented in the Balance Sheets	42	72
Gross Amount not Offset in the Balance Sheets	0	0
Net Amount	$ 42	$ 72