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Capital - Asset management operations (Details) - Asset management business - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023
Regulatory and other surplus |  |
Balance at 1 January | $ 497 | $ 466
Gains during the year | 204 | 254
Movement in capital requirement | 8 | (20)
Capital injection | 6 | 3
Distributions made to the parent company | (197) | (205)
Exchange and other movements | (18) | (1)
Balance at 31 December | $ 500 | $ 497

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- Definition The decrease in regulatory and other surplus resulting from distributions made to the parent company. + References No definition available. + Details
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Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition The increase (decrease) in regulatory and other surplus resulting from gains (losses). + References No definition available. + Details
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Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The increase (decrease) in regulatory and other surplus resulting from changes in regulatory capital requirements. + References No definition available. + Details
Name: | puk_IncreaseDecreaseThroughMovementInCapitalRequirementsRegulatoryAndOtherSurplus
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
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- Definition The increase (decrease) in regulatory and other surplus resulting from net exchange differences arising on the translation of the financial statements from the functional currency into a different presentation currency, including the translation of a foreign operation into the presentation currency of the reporting entity. + References No definition available. + Details
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Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
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- Definition The increase in regulatory and other surplus resulting from capital contributions received. + References No definition available. + Details
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Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition The aggregate amount of surplus regulatory capital position for regulated operations and IFRS basis shareholders' funds for unregulated operations. + References No definition available. + Details
Name: | puk_RegulatoryAndOtherSurplus
Namespace Prefix: | puk_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Definition Pertains to regulatory and other surplus requirements. + References No definition available. + Details
Name: | puk_RegulatoryAndOtherSurplusAbstract
Namespace Prefix: | puk_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |