RECEIVABLES - Receivables Allowance (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at beginning of year	$ 663	$ 412	$ 278
Celgene acquisition	0	0	116
Provision	7,257	5,839	3,687
Utilization	(7,170)	(5,601)	(3,667)
Other	(6)	13	(2)
Balance at end of year	744	663	412
Provision for expected credit loss	$ 4	$ 12	$ 12