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Consolidated Statement of Changes in Equity (Parenthetical)
$ in Millions
Apr. 02, 2019
USD ($)
$ / shares
shares
Apr. 02, 2019
£ / shares
shares
Share Capital    
Issue of equity $ 11  
Share Premium account    
Issue of equity $ 3,479  
Ordinary shares    
Number of shares issued | shares 44,386,214 44,386,214
Par value per ordinary share | $ / shares $ 0.25  
Price per share (pounds per share) | £ / shares   £ 60.50
Transaction costs $ 22