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Significant Accounting Policies (Schedule Of Unrealized Gains Or Losses On The Trust's Gold Holdings) (Details) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Significant Accounting Policies [Abstract]        
Investment in gold - average cost $ 1,561,925 [1] $ 1,376,845 [1] $ 971,070 $ 327,646
Unrealized gain on investment in gold 368,762 301,078    
Investment in gold - market value $ 1,930,687 $ 1,677,923    
[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.