XML 31 R16.htm IDEA: XBRL DOCUMENT
v3.20.4

Organization - Additional Information (Detail) | 12 Months Ended
--- | ---
Dec. 31, 2020 JPY (¥) Depositor shares
Organization Consolidation And Presentation Of Financial Statements [Abstract] |
Date of Incorporation | Feb. 01, 2007
Initial deposits by sponsor, primary deposit account | ¥ | ¥ 10,000
Number of deposits accounts in which trust's assets primarily consist of Japanese Yen | Depositor | 2
Redemptions capital shares, number of shares in each block | shares | 50,000

X
- Definition Date when an entity was incorporated + References No definition available. + Details
Name: | dei_EntityIncorporationDateOfIncorporation
Namespace Prefix: | dei_
Data Type: | xbrli:dateItemType
Balance Type: | na
Period Type: | duration

X
- Definition Initial incorporation deposit with bank sponsor. + References No definition available. + Details
Name: | fxy_InitialIncorporationDepositWithBankSponsor
Namespace Prefix: | fxy_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Number of deposits accounts in which trust assets primarily consist demand deposit. + References No definition available. + Details
Name: | fxy_NumberOfDepositsAccountsInWhichTrustAssetsPrimarilyConsistDemandDeposit
Namespace Prefix: | fxy_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition Stock redeemable number share each block shares. + References No definition available. + Details
Name: | fxy_StockRedeemableInBasketsNumberOfShares
Namespace Prefix: | fxy_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_OrganizationConsolidationAndPresentationOfFinancialStatementsAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration