Note 8 - Financial Highlights (Details) - Financial Highlights of The Investing Pool (iShares S&P Commodity-Indexed Investing Pool LLC [Member])	9 Months Ended
	Sep. 30, 2013
iShares S&P Commodity-Indexed Investing Pool LLC [Member]
Note 8 - Financial Highlights (Details) - Financial Highlights of The Investing Pool [Line Items]
Net investment loss(a)	(0.69%)	[1]
Expenses(a)	0.75%	[1]
Total return(b)	(2.00%)	[2]

[1] Percentage is annualized.

[2] Percentage is not annualized.