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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Name:	us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

TRANSACTIONS WITH FORMER PARENT - Net Parent Investment (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021
Related Party Transaction [Line Items]
Net Parent investment			$ 7,102	$ 6,027
IBM
Related Party Transaction [Line Items]
Net Parent investment	$ 0	$ 0