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CONTRACTUAL COMMITMENTS - Additional Information (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Disclosure of contingent liabilities [line items] |  |
Contractual commitments | $ 2,466 | $ 1,448
Asset management fee as percent per quarter | 0.3125% |
Asset management fee, percent | 1.25% |
Less than 1 year |  |
Disclosure of contingent liabilities [line items] |  |
Contractual capital commitments, maturity, percent | 17.00% |
1 to 5 years |  |
Disclosure of contingent liabilities [line items] |  |
Contractual capital commitments, maturity, percent | 38.00% |
Thereafter |  |
Disclosure of contingent liabilities [line items] |  |
Contractual capital commitments, maturity, percent | 45.00% |

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- Definition Contractual capital commitments, maturity, percent + References No definition available. + Details
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- Definition The amount of capital commitments for which the entity has entered into a contract. [Refer: Capital commitments] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_112_c&doctype=Standard -URIDate 2017-03-09 + Details
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