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Significant Accounting Policies (Schedule Of Investment In Palladium) (Details) (USD $)
 3 Months Ended 9 Months Ended 12 Months Ended
Sep. 30, 2012
oz
Sep. 30, 2011
Sep. 30, 2012
oz
Sep. 30, 2011
oz
Dec. 31, 2011
oz
Significant Accounting Policies [Abstract]          
Opening balance (in Ounces)     588,255.6 1,089,108.1 1,089,108.1
Creations (in Ounces)     281,253.0   238,310.9
Redemptions (in Ounces)     (73,844.4)   (733,279.8)
Transfers of palladium (in Ounces)     (3,377.0)   (5,883.6)
Closing balance (in Ounces) 792,287.2   792,287.2   588,255.6
Opening balance     $ 351,083,261 [1],[2] $ 597,199,695 $ 597,199,695
Creations 18,765,221 15,395,978 191,567,619 190,757,227 190,757,226
Redemptions (39,923,986) (141,749,879) (46,071,997) (318,316,868) (433,431,257)
Transfers of palladium (766,090) (884,567) (2,087,818) (2,773,462) (3,442,403)
Closing balance $ 494,491,065 [1]   $ 494,491,065 [1]   $ 351,083,261 [1],[2]
[1] The investment in palladium is valued at the lower of cost or market value. Refer to note 2.1 for a breakdown of cost and market value of the investment in palladium.
[2] Derived from audited Statement of Financial Condition as of December 31, 2011.