Dispositions of Real Estate (Details)	1 Months Ended		3 Months Ended		12 Months Ended
	Nov. 30, 2024 USD ($) property	Jul. 31, 2024 USD ($) property	Mar. 31, 2025 USD ($) property	Mar. 31, 2024 USD ($) property	Dec. 31, 2024 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net			$ 0	$ 3,255,000
Assets held for sale, net			7,840,000		$ 7,840,000
Impairment of real estate			0	$ 0
Outpatient Medical Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property		59		2	59
Proceeds from sale of property		$ 674,000,000		$ 29,000,000	$ 674,000,000
Gain (loss) on sales of real estate, net				$ 3,000,000
Investments in loans receivable		$ 405,000,000			$ 405,000,000
Lab Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property					7
Proceeds from sale of property					$ 180,000,000
twelve Outpatient Medical Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property					12
Proceeds from sale of property					$ 191,000,000
Two Outpatient Medical Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties sold | property	2				2
Proceeds from sale of property	$ 23,000,000				$ 23,000,000
Investments in loans receivable	$ 14,000,000				14,000,000
CCRC
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of property					12,000,000
Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale, net			8,000,000		8,000,000
Liabilities related to assets held for sale, net			$ 0		$ 0
Held-for-sale | Outpatient Medical Buildings
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties classified as held for sale | property			1		1