OTHER COMPREHENSIVE INCOME (LOSS) - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 18,617	$ 8,595	$ 8,173	$ 8,355
Ending balance	17,317	8,629	17,317	8,629
Accumulated Other Comprehensive Income (Loss)
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(672)	(1,580)	(1,722)	(1,565)
Ending balance	(646)	(1,554)	(646)	(1,554)
Defined Benefit Pension and Postretirement Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(1,272)	(1,242)	(1,312)	(1,276)
Amounts reclassified from accumulated other comprehensive income	16	18	56	52
Ending balance	(1,256)	(1,224)	(1,256)	(1,224)
Change in Cumulative Foreign Currency Translation Adjustments
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	653	(330)	(402)	(281)
Other comprehensive income (loss) before reclassifications	4	8	1,059	(41)
Ending balance	657	(322)	657	(322)
Net Gains and Losses on Cash Flow Hedging Derivatives
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(53)	(8)	(8)	(8)
Amounts reclassified from accumulated other comprehensive income	8	0	15	0
Other comprehensive income (loss) before reclassifications	(2)	0	(54)	0
Ending balance	$ (47)	$ (8)	$ (47)	$ (8)