Impairment - Narrative (Details) - GBP (£) £ in Millions	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020
Impairments
Residual impairment and voluntary termination charges	£ 41	£ 20	£ 21
Central adjustment to severe scenario			£ 200

It represents information about amount of residual impairment charges and voluntary

No definition available.

Name:	lyg_ResidualValueAndVoluntaryImpairmentCharges
Namespace Prefix:	lyg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration