Investments in Affiliates (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022.

	Value 12/31/2021		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 03/31/2022		Dividend Income
Invesco Treasury Collateral    ETF	$	11,439,187	$	—	$	—		$	(8,122	)	$	—	$	11,431,065	$	689
Investments in Affiliated    Money Market Funds:
Invesco Government &    Agency Portfolio,    Institutional Class		67,799,964		67,114,679		(36,612,401	)		—			—		98,302,242		14,486
Total	$	79,239,151	$	67,114,679	$	(36,612,401	)	$	(8,122	)	$	—	$	109,733,307	$	15,175

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three months ended March 31, 2021.

	Value 12/31/2020		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)		Realized Gain (Loss)		Value 03/31/2021		Dividend Income
Invesco Treasury Collateral    ETF	$	17,435,550	$	—	$	—		$	2,475	$	—	$	17,438,025	$	2,594
Investments in Affiliated    Money Market Funds:
Invesco Government &    Agency Portfolio,    Institutional Class		68,605,719		44,122,366		(59,007,696	)		—		—		53,720,389		4,311
Total	$	86,041,269	$	44,122,366	$	(59,007,696	)	$	2,475	$	—	$	71,158,414	$	6,905