VALUE OF IN-FORCE BUSINESS (Details) - Schedule of Value of In-Force Business - In-Force [Member] - GBP (£) £ in Millions	Dec. 31, 2018	Dec. 31, 2017
VALUE OF IN-FORCE BUSINESS (Details) - Schedule of Value of In-Force Business [Line Items]
Acquired value of in-force non-participating investment contracts	£ 271	£ 306
Value of in-force insurance and investment contracts	4,491	4,533
Total value of in-force business	£ 4,762	£ 4,839

The amount of intangible assets that are material to the entity’s financial statements. [Refer: Intangible assets other than goodwill]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 38
-IssueDate 2018-01-01
-Paragraph 122
-Subparagraph b
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=38&date=2018-03-01&anchor=para_122_b&doctype=Standard
-URIDate 2018-03-16

Name:	ifrs-full_IntangibleAssetsMaterialToEntity
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant