RETIREMENT BENEFIT PLANS - Retirement Benefits Expense (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Pension plans \| UNITED STATES
Retirement benefits plans expense (income)
Service cost	$ 4	$ 5
Interest cost	34	33
Expected return on plan assets	(48)	(47)
Amortization	4	2
Total	(6)	(7)
Settlements	9	9
Total expense (income)	3	1
Pension plans \| Non-United States plans
Retirement benefits plans expense (income)
Service cost	11	12
Interest cost	21	21
Expected return on plan assets	(31)	(33)
Amortization	4	3
Total	5	3
Settlements	2	1
Total expense (income)	7	4
Other postretirement benefits expense (income)
Retirement benefits plans expense (income)
Service cost	0	0
Interest cost	2	2
Expected return on plan assets	0	0
Amortization	(3)	(3)
Total	(1)	(1)
Settlements	0	0
Total expense (income)	$ (1)	$ (1)

Total Benefit Plans.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit of defined benefit plan.

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Amount of expected return (loss) recognized in net periodic benefit (cost) credit, calculated based on expected long-term rate of return and market-related value of plan assets of defined benefit plan.

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Amount of cost recognized for passage of time related to defined benefit plan.

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Amount of net periodic benefit cost (credit) for defined benefit plan.

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Amount of gain (loss) recognized in net periodic benefit (cost) credit from settlement and curtailment.

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Amount of cost for actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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