REVENUE RECOGNITION - Reconciliation of Contract Balances (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Contract Balances
Accounts receivable (net of allowances of $44 in 2022 and $44 in 2021)	$ 2,279	$ 1,444
Contract assets	62	72
Deferred income (current)	872	854
Deferred income (noncurrent)	475	$ 543
Revenue recognized that was included in deferred income at the beginning of the period	$ 877

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable, classified as current.

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