REVENUE RECOGNITION - Changes in Deferred Revenue Liabilities (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Movement in Deferred Revenue [Roll Forward]
Balance at beginning of period	$ 257	$ 234
Customer deposits and billings	1,267	1,041
Revenue recognized in the period	(1,192)	(1,014)
Translation and other	(9)	7
Deferred revenue reclassified to held for sale		(11)
Deferred revenue from business acquisitions	99
Balance at end of period	$ 422	$ 257