Class N Redeemable Common Stock - Schedule of Redeemable Common Stock (Details) - USD ($) $ in Thousands	3 Months Ended				6 Months Ended	12 Months Ended
	Jun. 30, 2024	Mar. 31, 2024	Jun. 30, 2023	Mar. 31, 2023	Jun. 30, 2024	Dec. 31, 2023
Class of Stock [Line Items]
Stock repurchased during period (in shares)	279,136	258,624	323,706	401,116
Class N Redeemable Common Stock repurchased	$ 7,826	$ 7,363	$ 10,177	$ 13,025
Class N Common Stock
Class of Stock [Line Items]
Stock repurchased during period (in shares)	0	0	0	0
Affiliated entity
Class of Stock [Line Items]
Class N Redeemable Common Stock issued					$ 515,946
Affiliated entity | Class N Common Stock
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)					14,116,867
MassMutual | Affiliated entity
Class of Stock [Line Items]
Class N Redeemable Common Stock issued					$ 416,228
MassMutual | Affiliated entity | Class N Common Stock
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)					14,116,867
MassMutual | Affiliated entity | Class N Common Stock | Initial Subscription Agreement
Class of Stock [Line Items]
Class N Redeemable Common Stock issued (in shares)					16,654,657	16,320,994
Class N Redeemable Common Stock issued					$ 491,023	$ 481,299
Stock repurchased during period (in shares)					2,537,790	2,537,790
Class N Redeemable Common Stock repurchased					$ 74,795	$ 74,795