Dispositions, Real Property Held for Sale and Impairment - Strategic Dissolution of Revera Joint Ventures (Details) $ in Thousands		1 Months Ended	3 Months Ended				12 Months Ended
	Apr. 01, 2024 property	Jun. 30, 2023 USD ($) joint_venture property	Mar. 31, 2024 USD ($)	Sep. 30, 2023 USD ($) property project	Jun. 30, 2023 USD ($) joint_venture property	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) property
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Gain (loss) on real estate dispositions			$ 4,707			$ 747
Net real estate investments			38,757,448				$ 38,775,913	[1]
Impairment of assets held for sale			$ 15,584			$ 12,629
U K Portfolio Revera Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of joint ventures | joint_venture		2			2
U K Portfolio Revera Joint Venture1
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership		75.00%			75.00%
Proceeds from sale of interest		$ 107,341
U K Portfolio Revera Joint Venture2
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership		90.00%			90.00%
U S Portfolio Revera Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership				34.00%
Equity method investments				$ 47,734
U S Portfolio Revera Joint Venture | Revera
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership				66.00%
Canadian Portfolio, Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership				75.00%
Number of properties | property				85
Canadian Portfolio, Joint Venture | Revera
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percentage ownership				25.00%
Revera Joint Venture, Disposal Transaction
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property sold | property		4		13	31		14
Gross sale price		$ 222,521			$ 222,521
Non-cash consideration		241,728
Other consideration		198,837			198,837
Noncontrolling interest		42,891			42,891
Transaction related expenses		9,049
Real estate property		224,208		$ 119,258	224,208
Gain (loss) on real estate dispositions		(1,687)		62,075
Payment for transaction related expenses disposal group		5,776
Noncontrolling Interest, decrease from deconsolidation		180,497		$ 56,905
Liabilities		22,270			$ 22,270
Realized adjustment on disposal		$ 1,846
Number of projects | project				1
Revera Joint Venture, Disposal Transaction | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property sold | property	14
Revera Joint Venture, Disposal Transaction | Avery Healthcare
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties transitioned | property		29
Revera Joint Venture Disposal Transaction U S Properties
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property sold | property				12
Revera Joint Venture Disposal Transaction Now Wholly Owned Properties | Oakmont Management Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties transitioned | property				2
Revera Joint Venture, Existing Wholly-Owned Properties | Oakmont Management Group
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Number of properties transitioned | property				26
Revera Joint Venture
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property acquired | property		29		10	110
Payment for property acquired		$ 10,158
Net real estate investments				$ 479,525
Payments to acquire real estate and real estate joint ventures				31,456
Consideration transferred				448,069
Asset acquisition debt assumed				$ 270,486
Revera Joint Venture | Subsequent event
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Property acquired | property	71

[1] The consolidated balance sheet at December 31, 2023 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.