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Cash and cash equivalents | 12 Months Ended
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Dec. 31, 2017
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Cash and cash equivalents |
23. | Cash and cash equivalents
|  | 31 December 2017 |  |  | 31 December 2016 |
Cash in hand |  |  | 192 |  |  |  | 223 |
Banks |  |  | 4,712,141 |  |  |  | 6,051,472 |
– Demand deposits |  |  | 603,553 |  |  |  | 569,826 |
– Time deposits |  |  | 4,108,588 |  |  |  | 5,481,646 |
Other cash and cash equivalents |  |  | — |  |  |  | 657 |
Cash and cash equivalents |  |  | 4,712,333 |  |  |  | 6,052,352 |
As at 31 December 2017, the average effective interest rates of TL, USD and EUR time deposits are 14.3%, 5.8% and 2.2% (31 December 2016:11.0%, 3.6% and 2.0%) respectively. As at 31 December 2017, average maturity of time deposits is 32 days (31 December 2016: 49 days).

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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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