XML 50 R37.htm IDEA: XBRL DOCUMENT v3.8.0.1
Financial Highlights - Summary of Financial Highlights (Detail)
 3 Months Ended
Dec. 31, 2017
$ / shares
Net Asset Value  
Net asset value per Share, beginning of period $ 119.77
Net investment income/(loss) (0.15)
Net Realized and Change in Unrealized Gain (Loss) 0.67
Net Income/(Loss) 0.52
Net asset value per Share, end of period 120.29
Market value per Share, beginning of period 118.89
Market value per Share, end of period $ 120.87
Ratio to average net assets  
Net Investment loss (0.50%)
Gross expenses 0.50%
Net expenses 0.50%
Total Return, at net asset value 0.43%
Total Return, at market value 1.67%
SPDR Long Dollar Gold Trust [Member]  
Net Asset Value  
Net asset value per Share, beginning of period $ 119.77
Net investment income/(loss) (0.15)
Net Realized and Change in Unrealized Gain (Loss) 0.67
Net Income/(Loss) 0.52
Net asset value per Share, end of period 120.29
Market value per Share, beginning of period 118.89
Market value per Share, end of period $ 120.87
Ratio to average net assets  
Net Investment loss (0.50%)
Gross expenses 0.50%
Net expenses 0.50%
Total Return, at net asset value 0.43%
Total Return, at market value 1.67%