Summary of Significant Accounting Policies - Narrative (Details) - USD ($) $ in Millions		12 Months Ended
	Feb. 10, 2023	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Schedule of Equity Method Investments [Line Items]
Straight line rent receivable, net of allowances		$ 373	$ 338
Maximum period available for occupancy from cessation of significant construction activity (in years)		1 year
Initial direct costs		$ 225	204
Entrance fee receivables		73	61
Advertising expense		$ 10	$ 9	$ 8
Healthpeak OP
Schedule of Equity Method Investments [Line Items]
Noncontrolling interest, ownership parent (in percent)	100.00%
Healthpeak OP | Total Noncontrolling Interests
Schedule of Equity Method Investments [Line Items]
Common stock, unit redemption share amount	1
Building and Building Improvements | Minimum
Schedule of Equity Method Investments [Line Items]
Property, plant and equipment, useful life (in years)		1 year
Building and Building Improvements | Maximum
Schedule of Equity Method Investments [Line Items]
Property, plant and equipment, useful life (in years)		50 years