Investments in Affiliates (Tables)

3 Months Ended

Mar. 31, 2024

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

Summary of Transactions in, and Earnings from, Investments in Affiliates

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three months ended March 31, 2024.

Investments in Affiliated    Money Market Funds:	Value 12/31/2023		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)		Realized Gain (Loss)		Value 03/31/2024		Dividend Income
Invesco Government &    Agency Portfolio,    Institutional Class	$	111,534,057	$	230,844,037	$	(208,212,022	)	$	—	$	—	$	134,166,072	$	2,267,969
Total	$	111,534,057	$	230,844,037	$	(208,212,022	)	$	—	$	—	$	134,166,072	$	2,267,969

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three months ended March 31, 2023.

	Value 12/31/2022		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)		Realized Gain (Loss)		Value 03/31/2023		Dividend Income
Invesco Short Term Treasury ETF	$	73,590,524	$	—	$	—		$	132,734	$	—	$	73,723,258	$	707,766
Investments in Affiliated    Money Market Funds:
Invesco Government & Agency Portfolio, Institutional Class		909,560,064		333,149,680		(756,596,676	)		—		—		486,113,068		7,621,406
Total	$	983,150,588	$	333,149,680	$	(756,596,676	)	$	132,734	$	—	$	559,836,326	$	8,329,172