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EQUITY - Schedule Of Expense Recognized For Share-Based Compensation (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Equity [abstract]    
Expense arising from equity-settled share-based payment transactions $ 73 $ 69
Expense arising from cash-settled share-based payment transactions (64) 281
Total expense arising from share-based payment transactions 9 350
Effect of hedging program 75 (275)
Total expense included in consolidated income $ 84 $ 75