SHARE-BASED AND OTHER COMPENSATION PROGRAMS - Summary of Compensation Expenses (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	$ 28	$ 30	$ 30
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	10	12	18
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	3	2	1
AXA Shareplan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	0	0	9
Restricted Stock Unit Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	15	16	2
Other Compensation plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Compensation Expenses	$ 0	$ 0	$ 0