Events after the balance sheet date (Details) $ / shares in Units, £ in Billions, $ in Billions |
Jul. 30, 2025
USD ($)
$ / shares
|
Jun. 30, 2025
USD ($)
|
May 31, 2025
USD ($)
|
Feb. 28, 2025
GBP (£)
|
|---|---|---|---|---|
| Disclosure of non-adjusting events after reporting period [line items] | ||||
| Stock repurchase amount | $ 3.0 | £ 2.0 | ||
| French portfolio of home and certain other loans | ||||
| Disclosure of non-adjusting events after reporting period [line items] | ||||
| Reserve of gains and losses on financial assets measured at fair value through other comprehensive income | $ 1.4 | |||
| Share buy-back programme | ||||
| Disclosure of non-adjusting events after reporting period [line items] | ||||
| Stock repurchase amount | $ 3.0 | |||
| Ordinary shares | Second interim dividend | ||||
| Disclosure of non-adjusting events after reporting period [line items] | ||||
| Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners per share (in USD per share) | $ / shares | $ 0.10 |