BUSINESS SEGMENTS - Segment Profits (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	$ 3,864	$ 3,462	$ 1,750
Interest expense, net of interest income	(535)	(377)	(392)
Provision for income taxes	(295)	(756)	(81)
NET INCOME	3,083	2,358	1,099
Non-US | Reimbursements expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	23	67	14
Total segment | Non-US
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	1,258	898	297
Total segment | U.S. & Canada
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	2,724	2,446	1,394
Total segment | U.S. & Canada | Reimbursements expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	57	134	51
Total segment | International
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	1,121	794	258
Total segment | International | Reimbursements expenses
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	17	49	14
Unallocated corporate and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total segments profits	$ 68	$ 251	$ (80)