SHAREHOLDERS' EQUITY - Stock Repurchase (Details) - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Feb. 10, 2021
Equity [Abstract]
Stock repurchase program, authorized amount (in shares)				$ 2,000
Repurchase and retirement of common stock (in shares)	17.6	18.8	20.1
Repurchase and retirement of common stock to offset the dilutive impact of the grant of long-term stock awards (in shares)	0.7	0.4	0.6
Repurchase and retirement of common stock	$ 1,026	$ 727	$ 896
Remaining authorized repurchase amount	$ 1,128