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RESTRUCTURING ACTIVITIES (Details) - Invigorate Program - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Target percent for annual productivity savings	3.00%
Pre-tax restructuring charges	$ 6	$ 15
Accounts Payable and Accrued Expenses
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	13		$ 12
Cost of services
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	4	9
Selling, general and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 2	$ 6

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