RELATED PARTY TRANSACTIONS - Assignment of Receivables and Term Deposit Account (Details) - USD ($) $ in Billions	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
IBM
Related Party Transaction [Line Items]
Assigned receivables	$ 1.9	$ 3.1	$ 3.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Balance Type:	na
Period Type:	duration