Accounting Policies and Related Matters - Additional Information (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Agreements with residents, cancelable period	30 days
Redeemable noncontrolling interest weighted average redemption period	5 years
Redeemable noncontrolling interests, carrying value	$ 290,605,000
Current redemption value of redeemable noncontrolling interest that exceeded the carrying value	$ 46,178,000
Shares issuable upon redemption	1
Revenue from contract with customer	$ 4,753,804,000	$ 4,173,711,000	$ 3,197,223,000
COVID-19 | Grant
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Revenue from contract with customer			4,642,000
COVID-19 | Seniors Housing Operating
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cost of property operating expense	$ 21,220,000	$ 38,607,000	$ 97,933,000
Buildings | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Properties, estimated useful life	15 years
Buildings | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Properties, estimated useful life	40 years
Improvements | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Properties, estimated useful life	5 years
Improvements | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Properties, estimated useful life	15 years