Real Estate and Other Activities - Investments in Unconsolidated Real Estate Joint Ventures - Additional Information (Detail) SFr / shares in Units, $ / shares in Units, $ in Thousands, € in Millions, shares in Millions, SFr in Millions			1 Months Ended	3 Months Ended			9 Months Ended
	Aug. 12, 2026 USD ($) Property	Jul. 09, 2026 CHF (SFr) SFr / shares shares	Jul. 31, 2026 CHF (SFr)	Sep. 30, 2026 USD ($)	Sep. 30, 2026 CHF (SFr)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Dec. 31, 2025 EUR (€)	Oct. 28, 2025 $ / shares
Business Combination [Line Items]
Favorable fair market value adjustments on investment | $				$ 2,200		$ 13,000	$ 11,000	$ 34,000
Shares issued price per share | $ / shares										$ 0.001
Purchase price of acquisition | $							$ 29,322	$ 110,089
Infracore S A [Member]
Business Combination [Line Items]
Stock issued | shares		0.7
Gross proceeds | SFr		SFr 38
Reduction in ownership interest		48.50%
Proceeds from repayment of outstanding loans | SFr					SFr 74
Infracore S A [Member] | General Acute Care Facility [Member]
Business Combination [Line Items]
Purchase price of acquisition | SFr			SFr 110
Infracore S A [Member] | Offering [Member]
Business Combination [Line Items]
Shares issued price per share | SFr / shares		SFr 54
Stock issued | shares		3.7
Gross proceeds | SFr		SFr 200
Non-controlling ownership interest		70.00%
Investments in Unconsolidated Real Estate Joint Ventures [Member]
Business Combination [Line Items]
Percentage of equity investment				100.00%	100.00%		100.00%
Debt instrument final refinancing amount | €									€ 655.0
Debt, face amount | €									€ 702.5
Fixed rate									5.10%
Non amortizing period									10 years
Investments in Unconsolidated Real Estate Joint Ventures [Member] | Common Spirit [Member]
Business Combination [Line Items]
Number of properties sold | Property	5
Proceeds from sale of real estate joint ventures | $	$ 174,000
Aggregate gains in fair value recognized pursuant to Topic 946 | $							$ 73,800
Investments in Unconsolidated Real Estate Joint Ventures [Member] | Maximum [Member]
Business Combination [Line Items]
Percentage of equity investment				100.00%	100.00%		100.00%