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Investment Properties - Summary of Investment Properties (Detail) - 12 months ended Dec. 31, 2017 $ in Thousands, $ in Thousands | TWD ($) | USD ($)
--- | --- | ---
Disclosure of detailed information about investment property [line items] |  |
Depreciation expenses | $ 122,231 | $ 4,124
Balance at December 31, 2017 | 8,119,436 | 273,935
Cost [member] |  |
Disclosure of detailed information about investment property [line items] |  |
Additions | 186,535 | 6,293
Disposals | (342) | (11)
Transfers from inventories related to real estate business and property, plant and equipment | 8,150,075 | 274,968
Effects of foreign currency exchange differences | 106,482 | 3,593
Balance at December 31, 2017 | 8,442,750 | 284,843
Cost [member] | Land [member] |  |
Disclosure of detailed information about investment property [line items] |  |
Transfers from inventories related to real estate business and property, plant and equipment | 35,965 | 1,213
Balance at December 31, 2017 | 35,965 | 1,213
Cost [member] | Buildings and improvements [member] |  |
Disclosure of detailed information about investment property [line items] |  |
Additions | 186,535 | 6,293
Disposals | (342) | (11)
Transfers from inventories related to real estate business and property, plant and equipment | 8,114,110 | 273,755
Effects of foreign currency exchange differences | 106,482 | 3,593
Balance at December 31, 2017 | 8,406,785 | 283,630
Accumulated depreciation, amortisation and impairment [member] |  |
Disclosure of detailed information about investment property [line items] |  |
Depreciation expenses | 122,231 | 4,124
Disposals | (161) | (5)
Transfers from inventories related to real estate business and property, plant and equipment | 199,745 | 6,739
Effects of foreign currency exchange differences | 1,499 | 50
Balance at December 31, 2017 | 323,314 | 10,908
Accumulated depreciation, amortisation and impairment [member] | Buildings and improvements [member] |  |
Disclosure of detailed information about investment property [line items] |  |
Depreciation expenses | 122,231 | 4,124
Disposals | (161) | (5)
Transfers from inventories related to real estate business and property, plant and equipment | 199,745 | 6,739
Effects of foreign currency exchange differences | 1,499 | 50
Balance at December 31, 2017 | $ 323,314 | $ 10,908

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- Definition The increase in investment property resulting from acquisitions through business combinations. [Refer: Business combinations [member]; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_b&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause ii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_ii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount of depreciation recognised on investment property. [Refer: Depreciation and amortisation expense; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause iv -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_iv&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The decrease in investment property resulting from disposals. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_c&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause iii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_iii&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The increase (decrease) in investment property resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. [Refer: Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_e&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause vi -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_vi&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition Expiry date 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee under a finance lease) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. Effective 2019-01-01: The amount of property (land or a building - or part of a building - or both) held (by the owner or by the lessee as a right-of-use asset) to earn rentals or for capital appreciation or both, rather than for: (a) use in the production or supply of goods or services or for administrative purposes; or (b) sale in the ordinary course of business. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d&doctype=Standard -URIDate 2017-03-09 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2017-01-01 -Paragraph 54 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=1&date=2017-03-01&anchor=para_54_b&doctype=Standard -URIDate 2017-03-09 + Details
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- Definition The amount transferred from (to) inventories and owner-occupied property to (from) investment property. [Refer: Inventories; Investment property] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 76 -Subparagraph f -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_76_f&doctype=Standard -URIDate 2017-03-09 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 40 -IssueDate 2017-01-01 -Paragraph 79 -Subparagraph d -Clause vii -URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=40&date=2017-03-01&anchor=para_79_d_vii&doctype=Standard -URIDate 2017-03-09 + Details
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