S000001112 [Member] Fees and Expenses - Government Portfolio	Dec. 31, 2025
Prospectus [Line Items]
Expense Heading [Optional Text]	Fees and Expenses
Expense Narrative [Text Block]	This table describes the fees and expenses that you may pay if you buy, hold, and sell Participation Certificates of the Government Portfolio. The Portfolio does not charge any form of sales load, redemption fee or exchange fee.
Operating Expenses Caption [Optional Text]	Annual Portfolio Operating Expenses (expenses that you pay each year as a percentage of the value of your investment).
Expense Example [Heading]	Example
Expense Example Narrative [Text Block]	This example is intended to help you compare the cost of investing in the Government Portfolio with the cost of investing in other mutual funds. This example assumes that you invest $10,000 in the Government Portfolio for the time periods indicated and then redeem all of your investment at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Government Portfolio’s operating expenses remain the same. The example below reflects the contractual fee waiver and expense reimbursement for the first year. Although your actual costs may be higher or lower, based on these assumptions, your costs would be:

S000001112 [Member] Fees and Expenses - Government Portfolio

Dec. 31, 2025

Fees and Expenses

This table describes the fees and expenses that you may pay if you buy, hold, and sell Participation Certificates of the Government Portfolio. The Portfolio does not charge any form of sales load, redemption fee or exchange fee.

Operating Expenses Caption [Optional Text]

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

Expense Example [Heading]

Example

Expense Example Narrative [Text Block]

This example is intended to help you compare the cost of investing in the Government Portfolio with the cost of investing in other mutual funds.

This example assumes that you invest $10,000 in the Government Portfolio for the time periods indicated and then redeem all of your investment at the end of those periods. The example also assumes that your investment has a 5% return each year and that the Government Portfolio’s operating expenses remain the same. The example below reflects the contractual fee waiver and expense reimbursement for the first year. Although your actual costs may be higher or lower, based on these assumptions, your costs would be: