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Significant Accounting Policies (Schedule Of Investment In Palladium) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		12 Months Ended
	Mar. 31, 2015 oz	Mar. 31, 2014 oz	Dec. 31, 2014 oz
Significant Accounting Policies [Abstract]
Opening balance (in Ounces)	514,615.5us-gaap_InvestmentOwnedBalanceOtherMeasure	717,967.6us-gaap_InvestmentOwnedBalanceOtherMeasure	717,967.6us-gaap_InvestmentOwnedBalanceOtherMeasure
Creations (in Ounces)	0.0pall_CreationsOuncesOfBullion		24,356.7pall_CreationsOuncesOfBullion
Redemptions (in Ounces)	(53,343.7)pall_RedemptionsOuncesOfBullion		(223,886.6)pall_RedemptionsOuncesOfBullion
Transfers of palladium to pay expenses (in Ounces)	(743.9)pall_TransfersOfBullionOunces		(3,822.2)pall_TransfersOfBullionOunces
Closing balance (in Ounces)	460,527.9us-gaap_InvestmentOwnedBalanceOtherMeasure		514,615.5us-gaap_InvestmentOwnedBalanceOtherMeasure
Investment in palladium, fair value, Opening balance	$ 410,663us-gaap_InvestmentInPhysicalCommodities	$ 510,475us-gaap_InvestmentInPhysicalCommodities	$ 510,475us-gaap_InvestmentInPhysicalCommodities
Creations	0pall_CreationsValueOfBullion		19,757pall_CreationsValueOfBullion
Redemptions	(42,233)pall_ValueOfBullionDistributedForRedemptionOfSharesExcludingBullionPayable		(174,468)pall_ValueOfBullionDistributedForRedemptionOfSharesExcludingBullionPayable
Realized gain on palladium distributed for redemption of Shares	7,455pall_RealizedGainLossOnBullionDistributedForRedemptionOfShares	7,995pall_RealizedGainLossOnBullionDistributedForRedemptionOfShares	29,111pall_RealizedGainLossOnBullionDistributedForRedemptionOfShares
Transfers of palladiuim to pay expenses	(587)pall_CostOfBullionTransferredToPayExpenses		(3,031)pall_CostOfBullionTransferredToPayExpenses
Realized gain on palladium transferred to pay expenses	102us-gaap_GainLossOnSaleOfTrustAssetsToPayExpenses	82us-gaap_GainLossOnSaleOfTrustAssetsToPayExpenses	550us-gaap_GainLossOnSaleOfTrustAssetsToPayExpenses
Unrealized (loss) / gain on investment in palladium	(39,675)pall_ChangeInUnrealizedGainLossOnInvestmentInBullion	36,292pall_ChangeInUnrealizedGainLossOnInvestmentInBullion	28,269pall_ChangeInUnrealizedGainLossOnInvestmentInBullion	[1]
Investment in palladium, fair value, closing balance	$ 335,725us-gaap_InvestmentInPhysicalCommodities		$ 410,663us-gaap_InvestmentInPhysicalCommodities
[1] Effective January 1, 2014, the Trust has adopted the provisions of Topic 946, Investment Companies, and follows specialized accounting. Refer to Note 2.1 for additional information.

X

- Definition

Change in unrealized gain (loss) on investment in Bullion

+ References

No definition available.

+ Details

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- Definition

Cost of Bullion transferred to pay Trust's expenses.

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- Definition

Ounces of bullion received into the Trust's account in respect of creations.

+ References

No definition available.

+ Details

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X

- Definition

Amount of creations of bullion in investment.

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No definition available.

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- Definition

Realized gain or loss during the period on bullion distributed for the redemption of Shares. Realized gains or losses are calculated on a trade date basis using average cost.

+ References

No definition available.

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- Definition

Ounces of bullion paid out of the Trust's account in respect of redemptions.

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Ounces of bullion transferred to pay Trust's expenses.

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Value of bullion distributed at average cost for the redemption of Shares excluding bullion payable.

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Gain (loss) related to the sale of trust assets (includes, but is not limited to, gold and silver) to pay trust expenses.

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- Definition

Investments held in physical commodities, such as gold, silver, platinum, crude oil, coal, sugar, rice, wheat.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.12)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

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- Definition

Quantity of the investment. Indicate the measure in the unit of measure. This is commonly used for investments other than securities. For example, if the investment is gold, the balance would be the number of ounces and the unit of measure would indicate "ounces".

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 946

-SubTopic 320

-Section S99

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-Subparagraph (SX 210.12-13.2, Column B)

-URI http://asc.fasb.org/extlink&oid=34726532&loc=d3e611282-123010



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