Property Investments (Details Textual) $ in Billions	Dec. 31, 2017 USD ($) property
Real Estate Investment Property, Net [Abstract]
Investment in real estate properties and mortgage notes \| $	$ 3.8
Number of real estate investments \| property	201

Investment in real estate properties and mortgage notes.

No definition available.

Name:	hr_InvestmentInRealEstatePropertiesAndMortgageNotes
Namespace Prefix:	hr_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant