Intangible and Goodwill - Summary of Real Estate Intangible Amortization Income (Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2025	Mar. 31, 2024
Goodwill and Intangible Assets Disclosure [Abstract]
Rental income related to (above)/below market tenant leases, net	$ (162)	$ (31)
Amortization related to in-place lease intangibles and lease commissions	$ (108,983)	$ (46,791)

Depreciation and amortization related to in place lease intangibles and lease commissions

No definition available.

Name:	well_DepreciationAmortizationRelatedToInPlaceLeaseIntangiblesAndLeaseCommissions
Namespace Prefix:	well_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration