Parent company disclosures - Interests In Subsidiaries (Details)	12 Months Ended
	Dec. 31, 2023
Lloyds Bank plc | Banking and financial services
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	England
Percentage of equity share capital and voting rights held (in percent)	100.00%
Scottish Widows Limited | Life assurance
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	England
Percentage of equity share capital and voting rights held (in percent)	100.00%
HBOS plc | Holding company
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	Scotland
Percentage of equity share capital and voting rights held (in percent)	100.00%
Bank of Scotland plc | Banking and financial services
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	Scotland
Percentage of equity share capital and voting rights held (in percent)	100.00%
Lloyds Bank Corporate Markets plc | Banking and financial services
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	England
Percentage of equity share capital and voting rights held (in percent)	100.00%
LBG Equity Investments Limited | Banking and financial services
PARENT COMPANY DISCLOSURES (Details) - Interests In Subsidiaries [Line Items]
Country of registration/ incorporation	England
Percentage of equity share capital and voting rights held (in percent)	100.00%