Organization - Additional Information (Detail) |
3 Months Ended | |||
|---|---|---|---|---|
|
Mar. 31, 2025
CreationUnit
shares
|
Dec. 31, 2024
shares
|
Feb. 23, 2015
shares
|
Aug. 03, 2006
Trust
|
|
| Organization Consolidation And Presentation Of Financial Statements [Line Items] | ||||
| Number of series of trusts | Trust | 5 | |||
| General shares, shares issued | 40 | 40 | 40 | |
| Treasury obligation measurement maximum maturity period | 12 months | |||
| Minimum number of Creation Units that can be purchased | CreationUnit | 1 | |||
| Number of shares issued per Creation Unit | 50,000 | |||
| Invesco Capital Management LLC [Member] | ||||
| Organization Consolidation And Presentation Of Financial Statements [Line Items] | ||||
| Purchase agreement transaction date | Feb. 23, 2015 |