RETIREMENT BENEFITS - Sensitivities of Certain Key Assumptions (Details) $ in Millions	3 Months Ended
	Jun. 30, 2024 USD ($)
U.S. plans | Pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	$ 6
Effect of one-percentage-point decrease in discount rates	(7)
Non-U.S. plans | Pension plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	(2)
Effect of one-percentage-point decrease in discount rates	4
Non-U.S. plans | Postretirement benefit plans
Defined Benefit Plans and Other Postretirement Benefit Plans
Effect of one-percentage-point increase in discount rates	(1)
Effect of one-percentage-point decrease in discount rates	$ 1