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Significant Accounting Policies (Schedule Of Investment In Gold) (Details) (USD $)
In Thousands, unless otherwise specified
 12 Months Ended
Dec. 31, 2012
oz
Dec. 31, 2011
oz
Dec. 31, 2010
oz
Significant Accounting Policies [Abstract]      
Opening balance 1,065,686.5 821,051.2 304,614.4
Creations 158,216.1 292,915.5 523,161.0
Redemptions (59,341.1) (44,662.3) (4,984.6)
Transfers of gold to pay expenses (4,292.8) (3,617.9) (1,739.6)
Closing balance 1,160,268.7 1,065,686.5 821,051.2
Opening balance (in Dollars) $ 1,376,845 [1] $ 971,070 $ 327,646
Creations (in Dollars) 268,941 466,053 650,947
Redemptions (in Dollars) (78,214) (55,844) (5,553)
Transfers of gold to pay expenses (in Dollars) (5,647) (4,434) (1,970)
Closing balance (in Dollars) $ 1,561,925 [1] $ 1,376,845 [1] $ 971,070
[1] The investment in gold 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 gold.