PENSION AND OTHER POSTRETIREMENT BENEFIT PROGRAMS - Net Periodic Benefit Cost - Continuing Operations (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Net periodic benefit cost
Defined Benefit Plan Net Periodic Benefit Cost Credit Settlement Gain Loss Statement Of Income Or Comprehensive Income Extensible List Not Disclosed Flag	Settlement charges	Settlement charges	Settlement charges
Settlement charges	$ 0	$ 0	$ 1
Pension benefits
Net periodic benefit cost
Service cost	13	11	19
Interest cost	136	136	148
Expected return on plan assets	(176)	(179)	(187)
Amortization of net losses and other deferred amounts	6	15	6
Curtailment gain	(1)	0	0
Other	0	0	1
Net periodic benefit cost	(22)	(17)	(12)
OPEB
Net periodic benefit cost
Service cost	0	0
Interest cost	7	8	8
Curtailment gain	0	0	(1)
Amortization of net losses and prior service credit	(17)	(19)	(24)
Net periodic benefit cost	$ (10)	$ (11)	$ (17)