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CASH AND CASH EQUIVALENTS | 12 Months Ended
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Dec. 31, 2017
Cash and cash equivalents [abstract] |
CASH AND CASH EQUIVALENTS | CASH AND CASH EQUIVALENTS
US$ MILLIONS |  | 2017 |  | 2016
Cash |  | $ | 258 |  |  | $ | 652 |
Restricted cash(1) |  | 33 |  |  | 84 |
Cash equivalents(2) |  | 83 |  |  | 50 |
Total cash and cash equivalents |  | $ | 374 |  |  | $ | 786 |
(1) | Restricted cash primarily relates to our partnership’s financing arrangements, including debt service accounts.
(2) | Short-term, highly liquid investments that are readily convertible to known amounts of cash and which are subject to an insignificant risk of changes in value.

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- Definition The disclosure of cash and cash equivalents. [Refer: Cash and cash equivalents] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 10 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_10_e&doctype=Standard -URIDate 2017-03-09 + Details
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