TRANSACTIONS WITH FORMER PARENT - Allocation of Corporate Expenses (Details) - IBM - Management Costs And Corporate Support Services - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2023	Dec. 31, 2021	Dec. 31, 2020
Related Party Transaction [Line Items]
Allocation of corporate expenses	$ 0	$ 0	$ 989	$ 1,300
Other expense
Related Party Transaction [Line Items]
Allocation of corporate expenses			10	4
Interest expense.
Related Party Transaction [Line Items]
Allocation of corporate expenses			46	63
Selling, general and administrative expense.
Related Party Transaction [Line Items]
Allocation of corporate expenses			$ 932	$ 1,200