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PROPERTY, PLANT AND EQUIPMENT - Additional Information (Details) - Accumulated fair value adjustments - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Disclosure of detailed information about property, plant and equipment [line items]
Gain from revaluation	$ 462	$ 418
Utilities
Disclosure of detailed information about property, plant and equipment [line items]
Gain from revaluation	220	137
Transport
Disclosure of detailed information about property, plant and equipment [line items]
Gain from revaluation	18	24
Energy
Disclosure of detailed information about property, plant and equipment [line items]
Gain from revaluation	$ 224	$ 257

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The increase (decrease) in property, plant and equipment resulting from revaluations to fair value. [Refer: Property, plant and equipment; Revaluation surplus]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2017-01-01
-Paragraph 73
-Subparagraph e
-Clause iv
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_73_e_iv&doctype=Standard
-URIDate 2017-03-09

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 16
-IssueDate 2017-01-01
-Paragraph 77
-Subparagraph f
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=16&date=2017-03-01&anchor=para_77_f&doctype=Standard
-URIDate 2017-03-09

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