Service Providers and Related Party Agreements - Additional Information (Detail)	3 Months Ended
Mar. 31, 2020
Related Party Transactions [Abstract]
Sponsor's fee accrues daily and paid monthly, annual nominal rate	0.40%

Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

No definition available.

Name:	us-gaap_RelatedPartyTransactionRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration