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RELATED PARTY TRANSACTIONS - Additional Information (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Related Party Transactions [Abstract]      
Undistributed earnings $ 11    
Carrying amount of equity method investments [1] 577 $ 732  
Amount by which the fair value of equity method investments exceeds company's share of the book value of the investee's net assets 311 419  
JWM Family Enterprise, L.P.      
Related Party Transaction [Line Items]      
Management fees $ 12 $ 13 $ 13
[1]
See Note 16 for disclosure of related party amounts.