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PROPERTY, PLANT AND EQUIPMENT - Net Book Value (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance $ 5,111 $ 4,497
Additions, net of disposals 377 364
Assets held by subsidiaries disposed during the period (653)  
Non-cash disposals (4) 3
Depreciation expense (128) (131)
Fair value adjustments 134 215
Net foreign currency exchange differences (34) 163
Ending balance 4,803 5,111
Gross carrying amount    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 4,197 3,696
Additions, net of disposals 367 358
Assets held by subsidiaries disposed during the period (599)  
Non-cash disposals (1) 6
Depreciation expense 0 0
Fair value adjustments 0 0
Net foreign currency exchange differences (29) 137
Ending balance 3,935 4,197
Accumulated depreciation    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance (719) (567)
Additions, net of disposals 10 6
Assets held by subsidiaries disposed during the period 163  
Non-cash disposals (3) (3)
Depreciation expense (128) (131)
Fair value adjustments 0 0
Net foreign currency exchange differences 4 (24)
Ending balance (673) (719)
Accumulated fair value adjustments    
Reconciliation of changes in property, plant and equipment [abstract]    
Beginning balance 1,633 1,368
Additions, net of disposals 0 0
Assets held by subsidiaries disposed during the period (217)  
Non-cash disposals 0 0
Depreciation expense 0 0
Fair value adjustments 134 215
Net foreign currency exchange differences (9) 50
Ending balance $ 1,541 $ 1,633