RETIREMENT BENEFITS - Post Employment and Defined Contribution Plans (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plan, Net Expense (Benefit)
Net expense	$ 14,000,000	$ 11,000,000	$ 10,000,000
Defined Contribution Plans
Maximum percentage contribution by employer of employees eligible pay	6.00%	6.00%
Maximum compensation to be eligible for fixed contribution from employer	$ 100,000
Percentage of fixed contribution by employer, for eligible employees whose compensation is $100,000 or less	2.00%
U.S.
Defined Benefit Plan Disclosure
Funded status of the plan at year end	$ (46,000,000)	$ (48,000,000)
Net amount recognized in AOCI (pretax)	(13,000,000)	(16,000,000)
Defined Contribution Plans
Company contributions	546,000,000	471,000,000	436,000,000
Non-U.S.
Defined Contribution Plans
Company contributions	$ 453,000,000	$ 399,000,000	$ 364,000,000