EMPLOYEE STOCK BENEFIT PLANS - Summary of Significant Outstanding and Exercisable Options (Details) $ / shares in Units, shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) $ / shares shares
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	47.0
Number of options exercisable (in shares) | shares	44.9
Options outstanding, weighted average remaining contractual life	3 years 2 months 12 days
Options exercisable, weighted average remaining contractual life	3 years 1 month 6 days
Options outstanding, weighted-average exercise price per share (in usd per share) | $ / shares	$ 53.00
Options exercisable, weighted-average exercise price per share (in usd per share) | $ / shares	$ 53.22
Options outstanding, aggregate intrinsic value | $	$ 502
Options exercisable, aggregate intrinsic value | $	$ 474
$10 - $40
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	7.5
Options outstanding, weighted average remaining contractual life	1 year 4 months 24 days
Options outstanding, weighted-average exercise price per share (in usd per share) | $ / shares	$ 29.54
Options outstanding, aggregate intrinsic value | $	$ 246
$40 - $55
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	15.3
Options outstanding, weighted average remaining contractual life	3 years 10 months 24 days
Options outstanding, weighted-average exercise price per share (in usd per share) | $ / shares	$ 48.79
Options outstanding, aggregate intrinsic value | $	$ 208
$55 - $65
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	16.2
Options outstanding, weighted average remaining contractual life	3 years 2 months 12 days
Options outstanding, weighted-average exercise price per share (in usd per share) | $ / shares	$ 59.54
Options outstanding, aggregate intrinsic value | $	$ 48
$65+
Share-based Payment Arrangement, Option, Exercise Price Range [Line Items]
Number of options outstanding (in shares) | shares	8.0
Options outstanding, weighted average remaining contractual life	3 years 8 months 12 days
Options outstanding, weighted-average exercise price per share (in usd per share) | $ / shares	$ 69.99
Options outstanding, aggregate intrinsic value | $	$ 0