RESTRUCTURING ACTIVITIES (Details) - Invigorate Program - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Restructuring Cost and Reserve [Line Items]
Pre-tax restructuring charges	$ 15	$ 2
Accounts Payable and Accrued Liabilities
Restructuring Cost and Reserve [Line Items]
Restructuring reserve	38		$ 44
Cost of services
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	9	1
Selling, general and administrative
Restructuring Cost and Reserve [Line Items]
Total restructuring charges	$ 6	$ 1