Share buy-back programme (Details) - GBP (£) shares in Millions, £ in Billions	6 Months Ended
Jun. 30, 2018	Mar. 08, 2018
Share buy-back programme
Authorised amount		£ 1
Shares buy back and cancelled	725

Number of shares that have been buy back and cancelled during the period.

No definition available.

Name:	lyg_StockBuyBackAndCancelledDuringPeriodShares
Namespace Prefix:	lyg_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration