XML 77 R58.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Real Estate Investments Proforma (Parenthetical) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Business Combinations [Abstract]
Merger costs	$ 103.6

X

- Definition

Merger costs.

+ References

No definition available.

+ Details

Name:	reg_MergerCosts
Namespace Prefix:	reg_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- References

No definition available.

+ Details

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