Statements Of Cash Flows (USD $)	6 Months Ended
	Apr. 30, 2012	Apr. 30, 2011
Cash flows from operating activities
Cash paid for expenses	$ (1,110,602)	$ (404,650)
Net cash used in operating activities	(1,110,602)	(404,650)
Cash flows from financing activities
Cash received to purchase redeemable shares	472,993,824	376,583,888
Cash paid to redeem redeemable shares	(939,610,803)	(412,488,493)
Net cash used in financing activities	(466,616,979)	(35,904,605)
Adjustment to period cash flows due to currency movement	(11,889,318)	(2,378,097)
Decrease in cash	(479,616,899)	(38,687,352)
Cash at beginning of period	695,214,700	233,438,609
Cash at end of period	215,597,801	194,751,257
Reconciliation of net loss to net cash used in operating activities
Net Loss	(983,091)	(378,216)
Adjustments to reconcile net loss to net cash used in operating activities:
Currency translation adjustment	12,566	1,079
Accrued sponsor fee	68,995	63,084
Prior period accrued sponsor fee	(209,072)	(90,597)
Net cash used in operating activities	$ (1,110,602)	$ (404,650)