The amount of non-derivative financial assets with fixed or determinable payments that are not quoted in an active market, other than: (a) those that the entity intends to sell immediately or in the near term, which shall be classified as held for trading, and those that the entity, upon initial recognition, designates as at fair value through profit or loss; (b) those that the entity, upon initial recognition, designates as available for sale; or (c) those for which the holder may not recover substantially all of its initial investment, other than because of credit deterioration, which shall be classified as available for sale. An interest acquired in a pool of assets that are not loans or receivables (for example, an interest in a mutual fund or a similar fund) is not a loan or receivable. [Refer: Derivative financial assets]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2021-01-01
-Name IFRS
-Number 7
-IssueDate 2019-01-01
-Paragraph 8
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_8_c&doctype=Standard&book=b
-URIDate 2019-03-27

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

Investments in Joint Ventures and Associates - Additional Information (Detail) - GBP (£) £ in Millions			12 Months Ended
	Oct. 05, 2017	Jul. 01, 2013	Dec. 31, 2019	Dec. 31, 2018
Investments in associates and joint ventures [line items]
Interest received			£ 1	£ 1
Random House [member]
Investments in associates and joint ventures [line items]
Proportion of voting power held in associate		53.00%
Penguin [member]
Investments in associates and joint ventures [line items]
Proportion of voting power held in associate		47.00%
Penguin Random House [member]
Investments in associates and joint ventures [line items]
Proportion of sales of voting power held in associate	22.00%
Proportion of voting power held in associate	25.00%		25.00%
Loans to associates			£ 49	0
Current assets receivables			16	17
Current liability payable			£ 0	£ 3