Operating Expenses - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operating Expenses And Offering Costs [Line Items]
Brokerage commissions and fees	$ 142,775	$ 175,786	$ 178,822
WisdomTree Continuous Commodity Index Master Fund [Member]
Operating Expenses And Offering Costs [Line Items]
Original management fees paid to managing owner as percentage of NAV of master fund	0.85%
Reduction in management fees paid to managing owner as percentage of NAV of fund	0.10%
Management fees paid to managing owner as percentage of NAV of master fund	0.75%
Brokerage commissions and fees	$ 142,775	$ 175,786	$ 178,822