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Organization (Details) | 12 Months Ended
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Dec. 31, 2014
Organization [Abstract] |
Minimum block of shares issued redeemed against platinum | 50,000 pplt_MinimumBlockOfSharesIssuedRedeemedAgainstBullion

X
- Definition The minimum block of shares that can be created or redeemed against bullion deposits or distributions. + References No definition available. + Details
Name: | pplt_MinimumBlockOfSharesIssuedRedeemedAgainstBullion
Namespace Prefix: | pplt_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration