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Real Estate Investments - Assets Held for Sale (Details)	Mar. 31, 2016 property
Business Combinations [Abstract]
Number of properties held for sale	1

X

- Definition

Number of properties held for sale.

+ References

No definition available.

+ Details

Name:	hr_NumberOfPropertiesHeldForSale
Namespace Prefix:	hr_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_BusinessCombinationsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration