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Equity - Dividends - Narrative (Details) - Major ordinary share transactions
£ / shares in Units, £ in Millions
Jul. 27, 2022
GBP (£)
£ / shares
Disclosure of non-adjusting events after reporting period [line items]  
Proposed final dividend | £ £ 1,067
Proposed final dividend per share (in GBP per share) | £ / shares £ 0.4682