Real Estate Transactions - Development Activities (Details) $ in Millions	3 Months Ended
Mar. 31, 2020 USD ($)
Real Estate [Abstract]
Decrease to development commitments	$ 77
Development commitments	$ 284

Commitments, Development and Redevelopment Projects, Increase (Decrease)

No definition available.

Name:	hcp_CommitmentsDevelopmentandRedevelopmentProjectsAmountIncreaseDecrease
Namespace Prefix:	hcp_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration