INCOME TAXES - Unrecognized Deferred Tax Assets (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Balance at January 1,	$ 281	$ 297	$ 273
Additions for tax positions of prior years	17	229	24
Reductions for tax positions of prior years	(3)	(250)	0
Additions for tax positions of current year	0	0	0
Settlements with tax authorities	0	5	0
Balance at December 31,	295	281	297
Unrecognized tax benefits that, if recognized, would impact the effective rate	$ 43	$ 47	$ 222