Class N Redeemable Common Stock - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2022
Class of Stock [Line Items]
Increase (decrease) to redeemable common stock	$ (3.9)		$ (16.8)
Increase (decrease) to additional paid In capital	$ 3.9		$ 16.8
MassMutual | Class N Common Stock | Affiliated entity
Class of Stock [Line Items]
Share repurchase, minimum repurchase amount		$ 50.0
Stock redemption terms		3 years
MassMutual | Class N Common Stock | Private Offering | Affiliated entity
Class of Stock [Line Items]
Capital commitment				$ 400.0
Shares repurchase amount, maximum		$ 200.0
MassMutual | Redeemable common stock | Affiliated entity
Class of Stock [Line Items]
Share of entity's stock, minimum net asset value		$ 20.0