Statement of Financial Condition(USD ($))	Oct. 31, 2013	Oct. 31, 2012
Current Assets:
Japanese Yen deposits, interest bearing	$ 144,517,524	$ 128,968,366
Japanese Yen deposits, non-interest bearing
Total Current Assets	144,517,524	128,968,366
Current Liabilities:
Accrued Sponsor's fee	53,674	48,115
Total Current Liabilities	53,674	48,115
Commitments and Contingent Liabilities (note 9)
Redeemable Capital Shares, at redemption value, no par value, 48,870,000 and 43,870,000 authorized, respectively - 1,450,000 and 1,050,000 issued and outstanding, respectively	144,463,850	128,920,251
Shareholders' Equity:
Retained Earnings
Cumulative Translation Adjustment
Total Liabilities, Redeemable Capital Shares and Shareholders' Equity	$ 144,517,524	$ 128,968,366