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INTANGIBLE ASSETS - Accumulated Amortization (Details) - USD ($)
$ in Millions
 6 Months Ended 12 Months Ended
Jun. 30, 2026
Dec. 31, 2025
Disclosure of detailed information about intangible assets [line items]    
Cost at beginning of the period $ 15,765  
Ending Balance 14,692 $ 15,765
Accumulated amortization    
Disclosure of detailed information about intangible assets [line items]    
Cost at beginning of the period (4,170) (3,218)
Assets held by subsidiaries disposed during the period 26 19
Non-cash additions, net of disposals 7 45
Amortization (497) (910)
Disposals 0 24
Impairment loss (36) 0
Held for sale 0 130
Foreign currency translation (1) (260)
Ending Balance $ (4,671) $ (4,170)