Investments in Unconsolidated Joint Ventures - Narrative (Details) $ in Millions	1 Months Ended		6 Months Ended
	Mar. 31, 2026 USD ($) property	Jan. 31, 2026 USD ($) property	Jun. 30, 2026 USD ($) property	Dec. 31, 2025 USD ($) property
Schedule of Equity Method Investments [Line Items]
Gain on deconsolidation | $			$ 92
SWF SH JV | Senior housing
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)			0.00%
Property count | property			0
Blackstone (“BX”) JV I and II
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)			20.00%
Number of joint ventures formed | property	2
Blackstone (“BX”) JV I and II | Outpatient Medical Buildings
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)			20.00%
Property count | property	6		6
HQ Point Investment
Schedule of Equity Method Investments [Line Items]
Equity investment, aggregate cost | $				$ 50
SWF SH JV | SWF SH JV | Senior housing
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)		46.50%		53.50%
Cash paid | $		$ 312
Property count | property		19		19
Blackstone (“BX”) JV I and II | Blackstone (“BX”) JV I and II
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)	20.00%
Blackstone (“BX”) JV I and II | Blackstone (“BX”) JV I and II | Outpatient Medical Buildings
Schedule of Equity Method Investments [Line Items]
Investment ownership (as a percent)	80.00%
Cash proceeds | $	$ 163