Debt Instrument interest rate par value percentage.

No definition available.

Name:	reg_DebtInstrumentInterestRateParValuePercentage
Namespace Prefix:	reg_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Face (par) amount of debt instrument at time of issuance.

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+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- 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.

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+ Details

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Period Type:	duration

- Definition

The cash outflow to repay long-term debt that is not secured by collateral. Excludes repayments of tax exempt unsecured debt.

+ References

+ Details

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Period Type:	duration

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Namespace Prefix:
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Period Type:

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Notes Payable and Unsecured Credit Facilities - Additional Information (Details) - USD ($) $ in Millions	May 11, 2026	Feb. 02, 2026	Feb. 18, 2026
Fixed Rate Mortgage Loans [Member]
Debt Instrument [Line Items]
Repaid of fixed rate mortgage loans		$ 88.0
Unsecured Debt [Member] \| Senior Unsecured Debt Due in 2033 [Member]
Debt Instrument [Line Items]
Debt instrument, issue price			$ 450.0
Percentage of debt par value			99.376%
Coupon rate			4.50%
Private Placement [Member]
Debt Instrument [Line Items]
Repaid of unsecured debt	$ 100.0