Investments in Affiliates (Tables)

9 Months Ended

Sep. 30, 2021

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 and nine months ended September 30, 2021.

	Value 06/30/2021		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 09/30/2021		Dividend Income
Invesco Treasury Collateral    ETF	$	49,876,240	$	—	$	—		$	(4,720	)	$	—	$	49,871,520	$	—
Investments in Affiliated    Money Market Funds:
Invesco Government &    Agency Portfolio,    Institutional Class		233,594,482		156,907,514		(134,229,066	)		—			—		256,272,930		15,820
Total	$	283,470,722	$	156,907,514	$	(134,229,066	)	$	(4,720	)	$	—	$	306,144,450	$	15,820

	Value 12/31/2020		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 09/30/2021		Dividend Income
Invesco Treasury Collateral    ETF	$	49,876,240	$	—	$	—		$	(4,720	)	$	—	$	49,871,520	$	8,075
Investments in Affiliated    Money Market Funds:
Invesco Government &    Agency Portfolio,    Institutional Class		195,533,756		605,856,358		(545,117,184	)		—			—		256,272,930		43,070
Total	$	245,409,996	$	605,856,358	$	(545,117,184	)	$	(4,720	)	$	—	$	306,144,450	$	51,145

The following is a summary of the transactions in, and earnings from, investments in affiliates for the three and nine months ended September 30, 2020.

	Value 06/30/2020		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)			Realized Gain (Loss)		Value 09/30/2020		Dividend Income
Invesco Treasury Collateral    ETF	$	80,090,600	$	—	$	—		$	(52,990	)	$	—	$	80,037,610	$	58,024
Investments in Affiliated    Money Market Funds:
Invesco Premier U.S.    Government Money    Portfolio, Institutional Class		216,108,596		190,622,258		(406,730,854	)		—			—		—		11,735
Invesco Government & Agency Portfolio, Institutional Class		—		554,055,482	$	(13,204,279	)		—			—		540,851,203		1,378
Total	$	296,199,196	$	744,677,740	$	(419,935,133	)	$	(52,990	)	$	—	$	620,888,813	$	71,137

	Value 12/31/2019		Purchases at Cost		Proceeds from Sales			Change in Unrealized Appreciation (Depreciation)		Realized Gain (Loss)		Value 09/30/2020		Dividend Income
Invesco Treasury Collateral    ETF	$	79,893,780	$	—	$	—		$	143,830	$	—	$	80,037,610	$	573,935
Investments in Affiliated    Money Market Funds:
Invesco Premier U.S.    Government Money    Portfolio, Institutional Class		25,736,227		1,566,305,879		(1,592,042,106	)		—		—		—		665,495
Invesco Government & Agency Portfolio, Institutional Class		—		554,055,482	$	(13,204,279	)		—		—		540,851,203		1,378
Total	$	105,630,007	$	2,120,361,361	$	(1,605,246,385	)	$	143,830	$	—	$	620,888,813	$	1,240,808