INCOME TAXES (Reserve for unrecognized tax benefits, interest and penalties) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2018
Reconciliation of Unrecognized Tax Benefits [Roll Forward]
Balance at beginning of year	$ 474	$ 491
Additions:
Prior year tax positions	330	56	$ 86
Current year tax positions	71	60	11
Decreases:
Prior year tax positions	(30)	(82)	(75)
Settlements with taxing authorities	(37)	(51)	(25)
Balance at end of year	$ 808	$ 474	$ 494