|
Redeemable Capital Shares (Details) (USD $)
|
12 Months Ended | ||
|---|---|---|---|
|
Oct. 31, 2012
|
Oct. 31, 2011
|
Oct. 31, 2010
|
|
| Redeemable capital shares activity | |||
| Opening balance, Shares | 8,100,000 | 6,750,000 | 8,250,000 |
| Opening balance, Amount | $ 862,361,862 | $ 663,665,283 | $ 746,917,479 |
| Shares issued, Shares | 4,100,000 | 7,250,000 | 3,250,000 |
| Shares issued, Amount | 423,131,548 | 748,290,041 | 294,995,478 |
| Stock redeemed, Shares | (6,550,000) | (5,900,000) | (4,750,000) |
| Stock redeemed, Amount | (676,167,642) | (609,007,896) | (431,197,241) |
| Adjustment to period Shares due to currency movement and other, Shares | |||
| Adjustment to period Shares due to currency movement and other, Amount | (22,242,814) | 59,414,434 | 52,949,567 |
| Ending balance, Shares | 5,650,000 | 8,100,000 | 6,750,000 |
| Ending balance, Amount | $ 587,082,954 | $ 862,361,862 | $ 663,665,283 |