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Segment Information | 12 Months Ended
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Dec. 31, 2020
Disclosure Of Operating Segments [Abstract] |
Segment information | 23. Segment Information (1) The Group’s operating segments The Group determines the operating segments by establishing strategic decisions. Chief operating decision maker (“CODM”) reviews operating profit by each segment in order to make decisions regarding the resources to be allocated to the segment and to evaluate the performance of the segment. The reportable segments of the Group are in line with the organizational structure and CODM’s review of operations, and include mobile, online and others. The accounting policies of the operating segments are the same as those described in the significant accounting policies. The Group assesses the performance of its operating segments based on its operating profit or loss, which does not differ from operating profit reported on the statement of comprehensive income except for inter-segment transactions. Total assets and liabilities for each segment are not reported to CODM. The segment information for the years ended December 31, 2020, 2019 and 2018.
|  | 2020 |
|  | Revenue |  |  | Depreciation Amortization |  |  | Operating profit(*2) |
|  | (In millions of Korean won) |
Online |  | W |  | 107,949 |  |  | W |  | 1,609 |  |  | W |  | 45,115 |
Mobile |  |  |  | 336,326 |  |  |  |  | 1,823 |  |  |  |  | 42,493 |
Others |  |  |  | 22,333 |  |  |  |  | 1,488 |  |  |  |  | 510 |
Sub total |  |  |  | 466,608 |  |  |  |  | 4,920 |  |  |  |  | 88,118 |
Inter-segment eliminations(*1) |  |  |  | (60,655 | ) |  |  |  | — |  |  |  |  | 250 |
Total |  | W |  | 405,953 |  |  | W |  | 4,920 |  |  | W |  | 88,368 |
|  | 2019 |
|  | Revenue |  |  | Depreciation Amortization |  |  | Operating profit(*2) |
|  |  | (In millions of Korean won) |
Online |  | W |  | 48,182 |  |  | W |  | 1,401 |  |  | W |  | 7,754 |
Mobile |  |  |  | 346,878 |  |  |  |  | 1,145 |  |  |  |  | 38,655 |
Others |  |  |  | 19,352 |  |  |  |  | 1,107 |  |  |  |  | 562 |
Sub total |  |  |  | 414,412 |  |  |  |  | 3,653 |  |  |  |  | 46,971 |
Inter-segment eliminations(*1) |  |  |  | (53,445 | ) |  |  |  | — |  |  |  |  | 1,692 |
Total |  | W |  | 360,967 |  |  | W |  | 3,653 |  |  | W |  | 48,663 |
|  | 2018 |
|  | Revenue |  |  | Depreciation Amortization |  |  | Operating profit(*2) |
|  |  | (In millions of Korean won) |
Online |  | W |  | 41,288 |  |  | W |  | 238 |  |  | W |  | 4,286 |
Mobile |  |  |  | 257,364 |  |  |  |  | 473 |  |  |  |  | 24,795 |
Others |  |  |  | 9,526 |  |  |  |  | 715 |  |  |  |  | 1,086 |
Sub total |  |  |  | 308,178 |  |  |  |  | 1,426 |  |  |  |  | 30,167 |
Inter-segment eliminations(*1) |  |  |  | (21,408 | ) |  |  |  | (12 | ) |  |  |  | 3,201 |
Total |  | W |  | 286,770 |  |  | W |  | 1,414 |  |  | W |  | 33,368 |
(* 1) The Group reflects inter-segment eliminations as adjustments. (* 2) Other profit or loss items that do not constitute operating profit (loss) are not separately disclosed because they are not reviewed by the chief operating decision maker by operating segment. (2) Revenue from external customers by country for the years ended December 31, 2020, 2019 and 2018 are as follows:
|  | 2020 |  |  | 2019 |  |  | 2018 |
|  |  | (In millions of Korean won) |
Korea |  | W |  | 109,895 |  |  | W |  | 45,273 |  |  | W |  | 80,814 |
Taiwan |  |  |  | 100,049 |  |  |  |  | 52,118 |  |  |  |  | 98,210 |
Japan |  |  |  | 22,500 |  |  |  |  | 28,469 |  |  |  |  | 9,767 |
The United States of America |  |  |  | 20,659 |  |  |  |  | 55,062 |  |  |  |  | 10,572 |
Thailand |  |  |  | 59,086 |  |  |  |  | 62,043 |  |  |  |  | 43,846 |
The Philippines |  |  |  | 23,690 |  |  |  |  | 30,951 |  |  |  |  | 15,539 |
Indonesia |  |  |  | 12,729 |  |  |  |  | 22,355 |  |  |  |  | 9,359 |
Other |  |  |  | 57,345 |  |  |  |  | 64,696 |  |  |  |  | 18,663 |
Total |  | W |  | 405,953 |  |  | W |  | 360,967 |  |  | W |  | 286,770 |
(*) Revenue was attributed to the country based on the customer’s location. Non-Current assets by geographical regions as of December 31, 2020, 2019 and 2018 are as follows:
|  | December 31, 2020 |  |  | December 31, 2019 |  |  | December 31, 2018 |
|  | (In millions of Korean won) |
Domestic |  | W |  | 7,612 |  |  | W |  | 5,732 |  |  | W |  | 3,054 |
Overseas |  |  |  | 5,481 |  |  |  |  | 4,170 |  |  |  |  | 1,045 |
Total |  | W |  | 13,093 |  |  | W |  | 9,902 |  |  | W |  | 4,099 |
(*) The amounts are exclusive of financial assets and deferred tax assets. (3) No individual external customers accounted for more than 10% of consolidated revenue for the years ended December 31, 2020, 2019 and 2018.

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- Definition The entire disclosure for operating segments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2020-01-01 -Section Disclosure -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2020-en-r&doctype=Standard&dita_xref=IFRS08_g20-24_TI -URIDate 2020-01-01 + Details
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