RESTRUCTURING CHARGES AND SEPARATION COSTS - Schedule of Restructuring and Other Charges (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 8	$ 86	$ 110	$ 197
Operating segments \| Power
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1	34	1	58
Operating segments \| Electrification
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	5	22	87	49
Operating segments \| Wind
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	1	0	8	52
Other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	0	28	14	38
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(3)	14	8	92
Income Statement Location [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	10	72	102	105
Workforce reductions
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	(9)	74	18	144
Plant closures and associated costs and other asset write-downs
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	3	5	3	37
Acquisition/disposition net charges and other
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	14	8	90	17
Non-cash asset impairment, accelerated depreciation and other charges
Restructuring Cost and Reserve [Line Items]
Restructuring and other charges	$ 15	$ 14	$ 111	$ 56