Consolidated Schedule of Investments (Parenthetical)	3 Months Ended	12 Months Ended
	Mar. 31, 2026	Dec. 31, 2025
Average yield percentage		3.70%
Assets, Total | Qualifying Assets Concentration Risk | Investments
Percentage of Portfolio	92.60%	92.70%
Secured Overnight Financing Rate (SOFR)
Percent of net assets	3.70%	3.90%
Sterling Overnight Index Average Rate
Percent of net assets	3.70%	3.70%
Euro Interbank Offered Rate
Percent of net assets	2.10%	2.00%
Canadian Overnight Repo Rate Average
Percent of net assets		2.30%
Investment, Identifier [Axis]: BNY Mellon U.S. Treasury Fund
Average yield percentage	3.30%	3.40%
Investment, Identifier [Axis]: Goldman Sachs Financial Square Government Fund
Average yield percentage	3.60%
Investment, Identifier [Axis]: State Street Institutional U.S. Government Money Market Fund
Average yield percentage	3.50%