Fees and Expenses - Franklin OnChain U.S. Government Money Fund

Mar. 31, 2026

Prospectus [Line Items]

Expense Heading [Optional Text]

Fees and Expenses of the Fund

Expense Narrative [Text Block]

These tables describe the fees and expenses that you may pay if you buy, hold and sell shares of the Fund. Please note that the tables and examples below do not reflect any transaction fees that may be charged by financial intermediaries, or commissions that a shareholder may be required to pay directly to its financial intermediary when buying or selling shares of the Fund.

Operating Expenses Caption [Optional Text]

Annual Fund Operating Expenses (expenses that you pay each year as a percentage of the value of your investment)

Annual Fund Operating Expenses [Table]

Annual Fund Operating Expenses - Franklin OnChain U.S. Government Money Fund	Franklin OnChain U.S. Government Money Fund
Management Fees (as a percentage of Assets)	0.15%
Distribution and Service (12b-1) Fees	0.00%
Other Expenses (as a percentage of Assets):	0.07%
Expenses (as a percentage of Assets)	0.22%
Fee Waiver or Reimbursement	(0.02%)	^[1]
Net Expenses (as a percentage of Assets)	0.20%
Fee Waiver or Reimbursement over Assets, Date of Termination	July 31, 2027

[1]

The investment manager has agreed to waive fees and/or reimburse operating expenses (excluding certain non-routine expenses or costs, such as those relating to litigation, indemnification, reorganizations and liquidations) for the Fund so that the ratio of total annual fund operating expenses will not exceed 0.20% until July 31, 2027. During the term, the fee waiver and expense reimbursement agreement may not be terminated or amended without approval of the board of trustees except to add series or classes, to reflect the extension of the termination date or to lower the waiver and expense limitation (which would result in lower fees for shareholders).

Expense Example [Heading]

Example

Expense Example Narrative [Text Block]

This Example is intended to help you compare the cost of investing in the Fund with the cost of investing in other mutual funds. The Example assumes that you invest $10,000 in the Fund for the time periods indicated and then redeem all of your shares at the end of the period. The Example also assumes that your investment has a 5% return each year and that the Fund's operating expenses remain the same. The Example reflects adjustments made to the Fund's operating expenses due to the fee waivers and/or expense reimbursements by management for the 1 Year numbers only. Although your actual costs may be higher or lower, based on these assumptions your costs would be:

Expense Example, With Redemption [Table]

Expense Example - Franklin OnChain U.S. Government Money Fund	Franklin OnChain U.S. Government Money Fund USD ($)
Expense Example, with Redemption, 1 Year	$ 20
Expense Example, with Redemption, 3 Years	69
Expense Example, with Redemption, 5 Years	122
Expense Example, with Redemption, 10 Years	$ 278