Organization - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2020 Depositor shares	Jun. 08, 2006 CHF (SFr)
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Initial deposits by Sponsor, Primary deposit account | SFr		SFr 100
Incorporation date	Jun. 08, 2006
Number of deposits accounts in which trust's assets primarily consist of Swiss Francs | Depositor	2
Redemptions Capital Shares, Number of shares in each Block | shares	50,000