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Share capital, share premium and own shares - Purchases by employee share scheme trusts (Details) - USD ($)
$ in Millions
1 Months Ended 12 Months Ended
Dec. 31, 2024
Nov. 30, 2024
Oct. 31, 2024
Sep. 30, 2024
Aug. 31, 2024
Jul. 31, 2024
Jun. 30, 2024
Jan. 31, 2024
Dec. 31, 2024
Dec. 31, 2023
Transactions in Prudential plc shares                    
Number of shares purchased 10,743,844 18,244,807 20,480,882 23,590,670 7,992,467 11,940,672 2,726,787 3,851,376 99,571,505  
Trust for employee incentive plans                    
Transactions in Prudential plc shares                    
Number of shares purchased                 10,000,000 3,900,000
Cost of shares purchased by employee share scheme trusts                 $ 96.8 $ 54.0
Number of shares held 14,900,000               14,900,000 10,000,000