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Organization (Details)	12 Months Ended
	Dec. 31, 2017 shares
Organization [Abstract]
Minimum block of shares issued redeemed against palladium	50,000

X

- Definition

The minimum block of shares that can be created or redeemed against bullion deposits or distributions.

+ References

No definition available.

+ Details

Name:	pall_MinimumBlockOfSharesIssuedRedeemedAgainstBullion
Namespace Prefix:	pall_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration

X

- References

No definition available.

+ Details

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