Intangible Assets and Non-current Asset Impairment - Impairment assessment (Details)	12 Months Ended
Dec. 31, 2019
Lighting CGU [member]
Disclosure of information for cash-generating units [line items]
Discount rate	6.10%
Display CGU [member]
Disclosure of information for cash-generating units [line items]
Discount rate	6.10%
Terminal growth rate	0.00%
Display Produces Plastic OLED [member]
Disclosure of information for cash-generating units [line items]
Discount rate	6.10%
Terminal growth rate	1.00%

The discount rate applied to cash flow projections for a cash-generating unit (group of units). [Refer: Cash-generating units [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2019-01-01
-Paragraph 134
-Subparagraph d
-Clause v
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_134_d_v&doctype=Standard
-URIDate 2019-03-27

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 36
-IssueDate 2019-01-01
-Paragraph 134
-Subparagraph e
-Clause v
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=36&code=ifrs-tx-2019-en-r&anchor=para_134_e_v&doctype=Standard
-URIDate 2019-03-27

Name:	ifrs-full_DescriptionOfDiscountRatesAppliedToCashFlowProjections
Namespace Prefix:	ifrs-full_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant