Dispositions of Real Estate (Details)	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	Jul. 31, 2026 USD ($) property states	Jul. 31, 2024 USD ($) property	Jun. 30, 2026 USD ($) property	Mar. 31, 2026 USD ($) property	Jun. 30, 2025 USD ($) property	Jun. 30, 2026 USD ($) property	Jun. 30, 2025 USD ($)	Dec. 31, 2025 USD ($) property	Aug. 05, 2026 property
Disposal Group, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net			$ 9,988,000		$ 1,636,000	$ 60,657,000	$ 1,636,000
Impairment of real estate			0		0	0	$ 0
Assets held for sale			37,101,000			37,101,000		$ 80,621,000
Right-of-use asset			395,124,000			395,124,000		412,198,000
Lease liability			288,194,000			288,194,000		296,260,000
Deferred revenue			1,026,479,000			1,026,479,000		985,307,000
Held-for-sale
Disposal Group, Including Discontinued Operations [Line Items]
Assets held for sale			37,000,000			37,000,000		81,000,000
Liabilities related to assets held for sale, net			1,000,000			$ 1,000,000		12,000,000
Real estate held for development and sale, net								73,000,000
Right-of-use asset								7,000,000
Lease liability								9,000,000
Deferred revenue								3,000,000
Brookefield JV | Subsequent Event
Disposal Group, Including Discontinued Operations [Line Items]
Property count | property	86
Number of states in which properties located | states	11
Ownership interest (in percent)	49.00%
Joint venture, gross valuation	$ 2,100,000,000
Proceeds from divestiture of interest in joint venture	$ 1,025,000,000.000
Joint venture, net annual return rate	6.50%
Dispositions Of 2026
Disposal Group, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net			$ 10,000,000	$ 51,000,000
Dispositions Of 2025
Disposal Group, Including Discontinued Operations [Line Items]
Gain (loss) on sales of real estate, net					$ 3,000,000			$ 69,000,000
Lab | Held-for-sale
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property				4
Number of properties classified as held for sale | property			2			2		6
Lab | Dispositions Of 2026
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property				4
Proceeds from sale of property				$ 68,000,000
Outpatient Medical Buildings
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property		59
Proceeds from sale of property		$ 674,000,000
Outpatient Medical Buildings | Held-for-sale
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property			1
Number of properties classified as held for sale | property			1			1		2
Outpatient Medical Buildings | Subsequent Event
Disposal Group, Including Discontinued Operations [Line Items]
Property count | property									8
Outpatient Medical Buildings | Dispositions Of 2026
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property			2	2
Proceeds from sale of property			$ 34,000,000	$ 15,000,000
Outpatient Medical Buildings | GEORGIA | Dispositions Of 2026
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property				9
Proceeds from sale of property				$ 7,000,000
Senior Housing Communities | Dispositions Of 2026
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property			1
Proceeds from sale of property			$ 23,000,000
Land Parcel | Dispositions Of 2025
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property					1
Proceeds from sale of property					$ 4,000,000
Nine Outpatient Medical Buildings | Dispositions Of 2025
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property								9
Proceeds from sale of property								$ 160,000,000
Sixteen Outpatient Medical Buildings | Dispositions Of 2025
Disposal Group, Including Discontinued Operations [Line Items]
Number of properties sold | property								16
Proceeds from sale of property								$ 182,000,000