Annual report pursuant to Section 13 and 15(d)

REVENUE RECOGNITION - Narratives (Details)

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REVENUE RECOGNITION - Narratives (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Revenue from Contract with Customer [Abstract]    
Increase (decrease) in allowance for expected credit losses $ 10  
Allowance for receivables 128 $ 138
Provisions for doubtful receivables 175 254
Contract assets 304 279
Deferred revenue 314 279
Contract liability, current 27 21
Contract liability, noncurrent $ 25 $ 26