Dispositions, Real Property Held for Sale and Impairment - Narrative (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 14, 2025 USD ($) property	Sep. 30, 2025 USD ($) property	Sep. 30, 2024 USD ($) property	Sep. 30, 2025 USD ($) property	Sep. 30, 2024 USD ($) property	Oct. 29, 2025 USD ($) property	Dec. 31, 2024 USD ($)	[1]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Real estate held-for-sale		$ 5,091,216		$ 5,091,216			$ 51,866
Expected sale proceeds				7,306,583
Impairment of assets		3,081	$ 23,421	75,359	$ 69,146
Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Right of use assets		173,162		173,162
Lease liabilities		184,881		184,881
Relieved amount		46,904		46,904
Other assets		160,750		160,750
Other liabilities		115,446		115,446
Impairment of assets				75,359	69,146
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		$ 59,923	$ 40,060	$ 114,164	$ 108,900
Disposed by Sale | Outpatient Medical Portfolio Disposition | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property						123
Consideration						$ 2,000,000
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		8		8
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		9	14	9	14
Triple-net
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		7		7
Triple-net | Held for sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties | property		6	2	6	2
Outpatient Medical
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Properties classified as held for sale | property		318		318

[1] The consolidated balance sheet at December 31, 2024 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.