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INTANGIBLE ASSETS - Net Amounts (Details) - USD ($)
$ in Millions
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Disclosure of detailed information about intangible assets [line items]      
Net intangible assets $ 9,894 $ 4,465  
Cost      
Disclosure of detailed information about intangible assets [line items]      
Net intangible assets 10,470 4,732 $ 3,485
Accumulated amortization      
Disclosure of detailed information about intangible assets [line items]      
Net intangible assets $ (576) $ (267) $ (189)