Dispositions, Real Property Held for Sale and Impairment - Narrative (Details) $ in Thousands		3 Months Ended		8 Months Ended
	Aug. 14, 2025 USD ($) property	Mar. 31, 2026 USD ($) property	Mar. 31, 2025 USD ($) property	Mar. 31, 2026 USD ($) property	Dec. 31, 2025 USD ($)	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate held-for-sale		$ 749,426		$ 749,426	$ 1,450,137
Expected sale proceeds		1,040,789
Impairment of assets		4,826	$ 52,402
Non-cash consideration		113,395	205,341
Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Right of use assets		21,621		21,621
Lease liabilities		16,663		16,663
Relieved amount		22,014		22,014
Other assets		11,260		11,260
Other liabilities		39,160		$ 39,160
Impairment of assets		4,826	52,402
Held for sale | Outpatient Medical Portfolio Disposition
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property	319
Expected sale proceeds	$ 6,000,000
Consideration	$ 7,200,000
Sold or Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from real estate dispositions, net		27,562	$ 42,845
Disposed by Sale | Outpatient Medical Portfolio Disposition
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Expected sale proceeds		$ 1,377,450
Property sold | property		60		301
Gain (loss) on real estate dispositions		$ 446,574
Non-cash consideration		$ 113,395
Seniors Housing Operating
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		16		16
Seniors Housing Operating | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property		1	6	1
Triple-net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		2		2
Triple-net | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property		1	4	1
Outpatient Medical
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		21		21
Outpatient Medical | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property		4		4

[1] The consolidated balance sheet at December 31, 2025 has been derived from the audited financial statements at that date but does not include all of the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.