Insurance benefits - Narrative (Details) - Rothesay Life Plc - Business Transfer Agreement (BTA) £ in Billions	6 Months Ended
Jun. 30, 2024 GBP (£)
Disclosure of analysis of insurance business [Line Items]
Disposals and derecognition	£ 5.3
Contracts held with reinsurers	5.3
Contractual service margin	£ 0.3

The amount of the contractual service margin. [Refer: Contractual service margin [member]]

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 17
-IssueDate 2023-01-01
-Paragraph 109
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2023-en-r&anchor=para_109&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_ContractualServiceMargin
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The decrease in financial assets resulting from derecognition. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph IG20B
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_IG20B&doctype=Implementation%20Guidance
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 35H
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35H&doctype=Standard
-URIDate 2023-03-23

Reference 3: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 35I
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2023-en-r&anchor=para_35I_c&doctype=Standard
-URIDate 2023-03-23

+ Details

Name:	ifrs-full_DecreaseThroughDerecognitionFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of reinsurance contracts held that are assets. [Refer: Assets; Reinsurance contracts held [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 17
-IssueDate 2023-01-01
-Paragraph 78
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=17&code=ifrs-tx-2023-en-r&anchor=para_78_c&doctype=Standard
-URIDate 2023-03-23

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IAS
-Number 1
-IssueDate 2023-01-01
-Paragraph 54
-Subparagraph da
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_54_da&doctype=Standard
-URIDate 2023-03-23

+ Details

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

- Definition

Disclosure Of Analysis Of Insurance Business

+ References

No definition available.

+ Details

Name:	lyg_DisclosureOfAnalysisOfInsuranceBusinessLineItems
Namespace Prefix:	lyg_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Details

Name:	srt_CounterpartyNameAxis=lyg_RothesayLifePlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=lyg_BusinessTransferAgreementBTAMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: