The income arising in the course of an entity's ordinary activities. Income is increases in economic benefits during the accounting period in the form of inflows or enhancements of assets or decreases of liabilities that result in an increase in equity, other than those relating to contributions from equity participants.

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+ Details

REVENUES (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
REVENUES (Details) - USD ($) $ in Millions	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Disclosure of operating segments [line items]
Revenue	$ 1,044	$ 934	$ 2,057	$ 1,590
Utilities
Disclosure of operating segments [line items]
Revenue	589		1,124
Transport
Disclosure of operating segments [line items]
Revenue	341		680
Energy
Disclosure of operating segments [line items]
Revenue	$ 114		$ 253