XML 69 R53.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Inventories (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2017
Text block1 [abstract] |
Summary of Inventories |
|  | December 31
|  | 2016 |  | 2017
|  | NT$ |  | NT$ |  | US$ (Note 4)
Finished goods |  | $ | 6,519,465 |  |  | $ | 6,740,816 |  |  | $ | 227,423 |
Work in process |  |  | 2,822,687 |  |  |  | 3,452,332 |  |  |  | 116,475 |
Raw materials |  |  | 10,850,062 |  |  |  | 12,625,502 |  |  |  | 425,962 |
Supplies |  |  | 795,093 |  |  |  | 894,196 |  |  |  | 30,168 |
Raw materials and supplies in transit |  |  | 450,755 |  |  |  | 548,065 |  |  |  | 18,491 |
|  | $ | 21,438,062 |  |  | $ | 24,260,911 |  |  | $ | 818,519 |

X
- Definition The disclosure of detailed information about inventories. + References No definition available. + Details
Name: | asx_DisclosureOfDetailedInformationAboutInventoriesExplanatory
Namespace Prefix: | asx_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration

X
- Definition Text block1 [abstract] + References No definition available. + Details
Name: | asx_TextBlock1Abstract
Namespace Prefix: | asx_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration