Summary of Significant Accounting Policies - Corporate Function Expense Allocations (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($) property	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)
HCP, Inc. | General and administrative expenses
Expense allocations
Expense allocations related to certain corporate functions | $	$ 18.3	$ 19.3	$ 18.8
EAT entity
Expense allocations
Number of properties | property	0