RETIREMENT AND POSTRETIREMENT BENEFIT PLANS - Summary of Net Benefit Costs (Details) - Pension Plan - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 3	$ 4	$ 4
Interest cost	19	17	17
Expected return on plan assets	(17)	(17)	(17)
Actuarial loss (gain)	3	3	3
Net periodic pension expense (benefit)	$ 8	$ 7	$ 7