Investment in Gold (Details)	12 Months Ended
	Sep. 30, 2011 XAU	Sep. 30, 2011 USD ($)		Sep. 30, 2010 XAU	Sep. 30, 2010 USD ($)		Sep. 30, 2009 XAU	Sep. 30, 2009 USD ($)
Ounces of Gold:
Opening Balance	41,813,100			35,176,600			23,268,200
Creations (excluding gold receivable at September 30, 2011 - 0 and at September 30, 2010 - 195.4 and at September 30, 2009 - 39.2)	11,463,000			11,001,200			16,607,200
Redemptions (excluding gold payable at September 30, 2011 - 321.2 and at September 30, 2010 - 58.6 and September 30, 2009 - nil)	(13,192,200)			(4,218,000)			(4,578,900)
Sales of gold	(155,000)			(146,700)			(119,900)
Closing Balance	39,928,900			41,813,100			35,176,600
Investment in Gold (lower of cost or market):
Opening Balance		37,736,064,000	[1]		28,463,669,000			16,878,554,000
Creations (excluding gold receivable at September 30, 2011 - $0 and at September 30, 2010 - $255,409 and at September 30, 2009 - $39,068)		17,776,506,000			13,004,707,000			15,266,663,000
Redemptions (excluding gold payable at September 30, 2011 - $520,297 and at September 30, 2010 - $76,622 and at September 30, 2009 - nil)		(12,628,298,000)			(3,607,548,000)			(3,588,054,000)
Sales of gold		(147,576,000)			(124,764,000)			(93,494,000)
Closing Balance		42,736,696,000	[1]		37,736,064,000	[1]		28,463,669,000
Investment in Gold (Textual) [Abstract]
Gold receivable ounces of gold	0			195,400			39,200
Gold payable ounces of gold	321,200			58,600			0
Gold receivable		0			255,409,000			39,068,000
Gold payable		$ 520,297,000			$ 76,622,000			$ 0

[1] The market value of Investment in Gold at September 30, 2011 is $64,684,848 and at September 30, 2010 is $54,649,674