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Insurance service expenses and other expenditure - Analysis of expenses (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Insurance service expenses and other expenditure |  |  |
Expenses attributed to insurance acquisition cash flows | $ 4,987 | $ 4,833 | $ 3,232
Other directly attributable expenses | 1,328 | 1,258 | 1,221
Other expenditure | 1,003 | 990 | 1,019
Total expenses | $ 7,318 | $ 7,081 | $ 5,472

X
- Definition Amount of expenses attributed to insurance acquisition cash flows. + References No definition available. + Details
Name: | puk_ExpensesAttributedToInsuranceAcquisitionCashFlows
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- References No definition available. + Details
Name: | puk_InsuranceServiceExpensesAndOtherExpenditureAbstract
Namespace Prefix: | puk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Insurance service expenses incurred + References No definition available. + Details
Name: | puk_InsuranceServiceExpensesIncurred
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The amount of non-insurance expenditure + References No definition available. + Details
Name: | puk_NonInsuranceExpenditure
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount of other directly attributable expenses. + References No definition available. + Details
Name: | puk_OtherDirectlyAttributableExpenses
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration