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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Redeemable Equity Instruments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended			9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Jun. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Class of Stock [Line Items]
Adjustment to carrying value of redeemable equity instruments			$ (35)
Adjustment to carrying value of redeemable equity instruments	$ 0	$ 0	(35)	$ 0	$ (35)
Additional Paid-in Capital
Class of Stock [Line Items]
Adjustment to carrying value of redeemable equity instruments			$ (35)		$ (35)
Redeemable Non-controlling Interest in INREIT OP
Class of Stock [Line Items]
Distributions payable to noncontrolling interests	1			1		$ 0
MassMutual \| Affiliated Entity \| Class N Common Stock
Class of Stock [Line Items]
Share repurchase, minimum repurchase amount				$ 50,000
Stock redemption terms				3 years
MassMutual \| Affiliated Entity \| Redeemable Common Stock
Class of Stock [Line Items]
Share of entity's stock, minimum net asset value	20,000			$ 20,000
MassMutual \| Affiliated Entity \| Private Offering \| Minimum
Class of Stock [Line Items]
Shares repurchase amount, monthly net proceeds from sale of shares, excluding sales to fund, percentage				50.00%
MassMutual \| Affiliated Entity \| Private Offering \| Maximum
Class of Stock [Line Items]
Shares repurchase amount, monthly net proceeds from sale of shares, excluding sales to fund, percentage				100.00%
MassMutual \| Affiliated Entity \| Private Offering \| Class N Common Stock
Class of Stock [Line Items]
Capital commitment	400,000			$ 400,000
Shares repurchase amount, monthly net proceeds from sale of shares to fund, percentage				100.00%
Shares repurchase amount, maximum	$ 200,000			$ 200,000
Shares repurchase amount, requested by counterparty, net proceeds from sale of shares and convertible securities, excluding sales to counterparty, percentage				15.00%
Shares repurchase amount, requested by counterparty, aggregate net asset value, percentage				1.50%