Subsequent Events (Details) - USD ($) $ in Thousands		1 Months Ended		6 Months Ended	20 Months Ended
	Aug. 05, 2021	Aug. 12, 2021	Jul. 31, 2021	Jun. 30, 2021	Jun. 30, 2021	May 14, 2021
Subsequent Event [Line Items]
Maximum public offering						$ 3,000,000
Class N Common Stock | Private Offering
Subsequent Event [Line Items]
Aggregate net proceeds				$ 159,400
Maximum public offering				400,000	$ 400,000
Affiliated entity
Subsequent Event [Line Items]
Aggregate net proceeds					164,380
Affiliated entity | Class N Common Stock | Private Offering | Massachusetts Mutual Life Insurance Company
Subsequent Event [Line Items]
Capital commitment				$ 54,200	$ 54,200
Subsequent Event
Subsequent Event [Line Items]
Aggregate net proceeds		$ 22,000
Shares acquired	$ 22,000
Subsequent Event | Class N Common Stock | Private Offering
Subsequent Event [Line Items]
Maximum public offering			$ 500,000
Subsequent Event | Affiliated entity | Class N Common Stock | Massachusetts Mutual Life Insurance Company
Subsequent Event [Line Items]
Percent of monthly net proceeds towards repurchase			100.00%
Maximum repurchase amount			$ 70,000
Minimum repurchase amount			$ 50,000
Subsequent Event | Affiliated entity | Class N Common Stock | Massachusetts Mutual Life Insurance Company | Minimum
Subsequent Event [Line Items]
Discretionary percent of net proceeds from other investors, towards repurchase			50.00%
Subsequent Event | Affiliated entity | Class N Common Stock | Massachusetts Mutual Life Insurance Company | Maximum
Subsequent Event [Line Items]
Discretionary percent of net proceeds from other investors, towards repurchase			100.00%
Subsequent Event | Affiliated entity | Class N Common Stock | Private Offering | Massachusetts Mutual Life Insurance Company
Subsequent Event [Line Items]
Aggregate net proceeds		$ 123,800
Capital commitment			$ 200,000
Shares repurchase maximum			200,000
Percent of net proceeds from other investors in prior month		15.00%
Percent of NAV, towards repurchase		1.50%
Lock-up period, aggregate NAV		$ 1,500,000
Subsequent Event | Affiliated entity | Class N Common Stock | Private Offering | Massachusetts Mutual Life Insurance Company | Maximum
Subsequent Event [Line Items]
Capital commitment			$ 400,000