XML 58 R44.htm IDEA: XBRL DOCUMENT
v3.25.2

Real Estate Investments - Schedule of Properties Acquired (Parenthetical) (Details) | Jun. 30, 2025 | Jan. 01, 2025 | Dec. 31, 2024 | Jun. 30, 2024
--- | --- | --- | --- | ---
Business Acquisition [Line Items] |  |  |  |
Percentage of purchase price and allocation | 100.00% |  |  | 100.00%
Putnam Plaza [Member] |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Percentage of equity interest acquired |  | 33.30% | 66.70% |

X
- Definition Percentage of Equity Interest Acquired + References No definition available. + Details
Name: | reg_PercentageOfEquityInterestAcquired
Namespace Prefix: | reg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Percentage of purchase price and allocation. + References No definition available. + Details
Name: | reg_PercentageOfPurchasePriceAndAllocation
Namespace Prefix: | reg_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 805 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479907/805-20-50-5 + Details
Name: | us-gaap_BusinessAcquisitionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=reg_PutnamPlazaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |