Distributions - Additional Information (Detail) - USD ($)	1 Months Ended		3 Months Ended
	Apr. 30, 2020	Mar. 31, 2020	Mar. 31, 2020	Mar. 31, 2019
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Investment Company, Expense Offset Arrangement			$ 607,630	$ 216,073
Distribution Date 1 | Class FA
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)		$ 0.104167	$ 0.104167	$ 0.104167
Distribution Date 1 | Class A
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)		0.104167	0.104167	0.104167
Distribution Date 1 | Class T
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)		0.083333	0.083333	0.083333
Distribution Date 1 | Class D
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)		0.09375	0.09375	0.09375
Distribution Date 1 | Class I
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)		$ 0.104167	$ 0.104167	$ 0.104167
Net Investment Income
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Investment Company, Expense Offset Arrangement			$ 607,630	$ 216,073
Subsequent Event [Member] | Class FA
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)	$ 0.104167
Subsequent Event [Member] | Class A
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)	0.104167
Subsequent Event [Member] | Class T
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)	0.083333
Subsequent Event [Member] | Class D
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)	0.09375
Subsequent Event [Member] | Class I
Distribution Made to Limited Liability Company (LLC) Member [Line Items]
Declared distribution (in dollars per share)	$ 0.104167