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Dividends - Commentary (Details) - Fourth quarter dividend
$ / shares in Units, $ in Millions
Aug. 02, 2021
USD ($)
$ / shares
Disclosure of classes of share capital [line items]  
Dividends proposed or declared before financial statements authorised for issue but not recognised as distribution to owners | $ $ 1,430
Ordinary shares  
Disclosure of classes of share capital [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 $ 0.07