STOCK-BASED COMPENSATION - Expense for performance based shares units (Details) - USD ($) shares in Thousands, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share plan expense	$ 24	$ 10	$ 12
Performance share plan, shares issued in period	148	505	315
Total Stockholder Return
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share plan expense	$ 6	$ 5	$ 5
Performance share plan, shares issued in period	0	165	0
Other Performance-Based
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance share plan expense	$ 18	$ 5	$ 7
Performance share plan, shares issued in period	148	340	315