Investments in Affiliates (Tables)

6 Months Ended

Jun. 30, 2024

Investments in and Advances to Affiliates, Schedule of Investments [Abstract]

Summary of Transactions in, and Earnings from, Investments in Affiliates (Excluding Affiliated Money Market Funds)

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three and six months ended June 30, 2024.

	Value 03/31/2024		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 06/30/2024		Dividend Income
Invesco Short Term     Treasury ETF	$	119,581,885	$	—	$	—		$	—		$	—	$	119,581,885	$	1,488,906
Investments in     Affiliated Money     Market Funds:
Invesco Government &     Agency Portfolio,     Institutional Class		342,555,653		311,928,567		(366,703,889	)		—			—		287,780,331		4,498,934
Total	$	462,137,538	$	311,928,567	$	(366,703,889	)	$	—		$	—	$	407,362,216	$	5,987,840
	Value 12/31/2023		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 06/30/2024		Dividend Income
Invesco Short Term     Treasury ETF	$	119,734,949	$	—	$	—		$	(153,064	)	$	—	$	119,581,885	$	3,026,826
Investments in     Affiliated Money     Market Funds:
Invesco Government &     Agency Portfolio,     Institutional Class		248,080,509		516,869,556		(477,169,734	)		—			—		287,780,331		7,850,256
Total	$	367,815,458	$	516,869,556	$	(477,169,734	)	$	(153,064	)	$	—	$	407,362,216	$	10,877,082

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three and six months ended June 30, 2023.

	Value 03/31/2023		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 06/30/2023		Dividend Income
Invesco Short Term     Treasury ETF	$	119,649,914	$	—	$	—		$	(68,028	)	$	—	$	119,581,886	$	1,311,399
Investments in     Affiliated Money     Market Funds:
Invesco Government &     Agency Portfolio,     Institutional Class		414,422,045		495,609,923		(540,737,802	)		—			—		369,294,166		4,854,322
Total	$	534,071,959	$	495,609,923	$	(540,737,802	)	$	(68,028	)	$	—	$	488,876,052	$	6,165,721
	Value 12/31/2022		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 06/30/2023		Dividend Income
Invesco Short Term     Treasury ETF	$	88,980,698	$	30,475,187	$	—		$	126,001		$	—	$	119,581,886	$	2,274,680
Investments in     Affiliated Money     Market Funds:
Invesco Government &     Agency Portfolio,     Institutional Class		428,581,904		1,115,897,222		(1,175,184,960	)		—			—		369,294,166		9,580,656
Total	$	517,562,602	$	1,146,372,409	$	(1,175,184,960	)	$	126,001		$	—	$	488,876,052	$	11,855,336