XML 26 R14.htm IDEA: XBRL DOCUMENT
v3.19.1

Inventories | 12 Months Ended
--- | ---
Dec. 31, 2018
Text block [abstract] |
Inventories |
8. | Inventories
Inventories as at December 31, 2017 and 2018, are as follows:
|  | December 31, 2017 |  |  | December 31, 2018 |
(In millions of Korean won) |  | Acquisition cost |  |  | Valuation allowance |  |  | Book amount |  |  | Acquisition cost |  |  | Valuation allowance |  |  | Book amount |
Merchandise |  | ￦ | 504,321 |  |  | ￦ | (58,293 | ) |  | ￦ | 446,028 |  |  | ￦ | 794,020 |  |  | ￦ | (113,581 | ) |  | ￦ | 680,439 |
Others |  |  | 195,999 |  |  |  | — |  |  |  | 195,999 |  |  |  | 394,195 |  |  |  | — |  |  |  | 394,195 |
Total |  | ￦ | 700,320 |  |  | ￦ | (58,293 | ) |  | ￦ | 642,027 |  |  | ￦ | 1,188,215 |  |  | ￦ | (113,581 | ) |  | ￦ | 1,074,634 |
Cost of inventories recognized as expenses for year ended December 31, 2018, amounts to ￦3,926,199 million (2016: ￦3,589,809 million, 2017: ￦3,855,089 million) and valuation loss on inventory recognized amounts to ￦55,288 million for year ended December 31, 2018 (2016: reversal of valuation allowance of ￦20,223 million, 2017: valuation loss on inventory amounts to ￦11,165 million,).

X
- Definition The entire disclosure for inventories. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 2 -IssueDate 2018-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=2&date=2018-03-01&anchor=sect_Disclosure&doctype=Standard -URIDate 2018-03-16 + Details
Name: | ifrs-full_DisclosureOfInventoriesExplanatory
Namespace Prefix: | ifrs-full_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block [abstract] + References No definition available. + Details
Name: | kt_TextBlockAbstract
Namespace Prefix: | kt_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration