| Item | Type | Period | Balance | Description | | Schedule of Investments | text | | | |
| Open Option Contracts Written, Schedule of Investments | text | | | Tabular disclosure of the information required in the supplementary schedule applicable to management investment companies listing written option contracts. |
| Open Option Contracts Written | text | | | Listing of open option contracts written. |
| Investment Secondary Categorization | text | | | Information by second categorization of investments, which may include, but is not limited to industry. |
| Legal Entity Axis | | | | |
| Open Option Contracts Written | text | | | Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. |
| Open Option Contracts Written Type | text | | | This axis is used for open option contracts written table to separate the put options from the call options. |
| Investments By Secondary Categorization Domain | | | | |
| Entity Domain | | | | |
| Open Option Contracts Written, Number of Contracts | | instant | | The number of contracts written for the open option contracts written on the investment. |
| Open Option Contracts Written, Number of Shares | | instant | | The number of shares for the open option contracts written on the investment. |
| Open Option Contracts Written, Exercise Price | | instant | | The exercise price of the open option contracts written on the investment. |
| Open Option Contracts Written, Expiration Date | date | duration | | Expiration date of the open option contracts written on the investment, in CCYY-MM-DD format. |
| Open Option Contracts Written, Premiums | $ | instant | credit | Represents the premiums earned on the open option contracts held by the fund. This item is not required to be disclosed in Regulation S-X but is commonly reported by some funds. |
| Open Option Contracts Written, at Fair Value | $ | instant | credit | The fair value of the open option contracts written for the investment. |
| Open Option Contracts Written Type | | duration | | This domain is used for open option contracts written table to separate the put options from the call options. |
| Call Option | | duration | | Financial contract between two parties, the buyer and the seller of the option, where the buyer has the right but not the obligation to buy an agreed quantity of a particular commodity or financial instrument (the underlying instrument) from the seller of the option for a certain price (the strike price). Seller is obligated to sell the asset to the buyer, if the buyer exercises the option. |
| Put Option | | duration | | A financial contract between two parties, the buyer and the seller (writer) of the option, where the buyer has the right but not the obligation to sell a commodity or financial instrument (the underlying instrument) to the seller (writer) at a certain time for a certain price (the strike price). The seller (writer) has the obligation to purchase the underlying asset at that strike price, if the buyer exercises the option. |