Investments in Unconsolidated Ventures - Narrative (Details) $ in Millions	1 Months Ended	3 Months Ended	9 Months Ended
	Jun. 30, 2023 USD ($) home facility shares	Sep. 30, 2024 USD ($) campus shares	Sep. 30, 2024 USD ($) campus shares	Sep. 20, 2024 USD ($)	Dec. 31, 2023 shares	Nov. 03, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Common stock, shares outstanding (in shares) \| shares		185,712,103	185,712,103		185,712,103
Preferred stock, shares outstanding (in shares) \| shares		0	0		0
Former Sponsor and Affiliates
Schedule of Equity Method Investments [Line Items]
Payments for divestiture of interest in joint venture \| $	$ 1.1
Common stock, shares outstanding (in shares) \| shares	9,709,553
Common unit, outstanding (in shares) \| shares	100
Preferred stock, shares outstanding (in shares) \| shares	100
Solstice \| Winterfell Portfolio
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership percentage by parent (as a percentage)		80.00%	80.00%
Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Trilogy
Schedule of Equity Method Investments [Line Items]
Consideration received \| $				$ 254.0
Gain on disposal \| $		$ 128.6	$ 128.6
Minimum \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Trilogy
Schedule of Equity Method Investments [Line Items]
Consideration received \| $						$ 240.5
Maximum \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| Trilogy
Schedule of Equity Method Investments [Line Items]
Consideration received \| $						$ 260.0
Trilogy
Schedule of Equity Method Investments [Line Items]
Number of integrated senior health campuses \| campus		126	126
Ownership interest (as a percentage)		24.00%	24.00%
Solstice
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percentage)		20.00%	20.00%
Solstice \| Winterfell Portfolio
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percentage)		20.00%	20.00%
Diversified US/UK [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percentage)	14.00%
Number of senior care homes owned \| home	48
Eclipse Joint Venture [Member]
Schedule of Equity Method Investments [Line Items]
Ownership interest (as a percentage)	6.00%
Number of senior care homes owned \| facility	34

NorthStar Healthcare Income, Inc. 10-Q