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EQUITY - Schedule Of Expense Recognized For Share-Based Compensation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Equity [abstract]    
Expense arising from equity-settled share-based payment transactions $ 69 $ 64
Expense arising from cash-settled share-based payment transactions 281 32
Total expense arising from share-based payment transactions 350 96
Effect of hedging program (275) (27)
Total expense included in consolidated income $ 75 $ 69