Investments in Real Estate Partnerships - Balance Sheet Summarized Financial Information (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Schedule of Equity Method Investments [Line Items]
Acquired lease intangible assets, net		$ 212,707	$ 188,799
Other assets		266,431	261,446
Total assets		10,792,563	10,936,904
Notes payable		3,718,944	3,658,405
Acquired lease intangible liabilities, net		363,276	377,712
Capital - Regency		72,561	73,235
Capital - Third parties		6,037,371	5,984,912
Total liabilities and equity		10,792,563	10,936,904
Investments in real estate partnerships (note 4)		372,591	467,155
Other Liabilities [Member] | US Regency Retail I, LLC (USAA) [Member]
Schedule of Equity Method Investments [Line Items]
Investments in real estate partnerships (note 4)	[1]		4,401
Basis Difference [Member]
Schedule of Equity Method Investments [Line Items]
Equity Method Investment, Difference Between Carrying Amount and Underlying Equity		65,919	(47,119)
Total Assets [Member]
Schedule of Equity Method Investments [Line Items]
Total assets		2,755,444	3,067,227
Total Assets [Member] | US Regency Retail I, LLC (USAA) [Member]
Schedule of Equity Method Investments [Line Items]
Total assets	[2]		85,006
Real Estate Partnership
Schedule of Equity Method Investments [Line Items]
Investments in real estate, net		2,530,964	2,817,713
Acquired lease intangible assets, net		18,735	32,607
Other assets		205,745	216,907
Total assets		2,755,444	3,067,227
Notes payable		1,444,867	1,557,043
Acquired lease intangible liabilities, net		20,978	33,223
Other liabilities		90,097	97,321
Total liabilities and equity		2,755,444	3,067,227
Regency [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Regency		438,510	509,873
Third Parties [Member]
Schedule of Equity Method Investments [Line Items]
Capital - Third parties		$ 760,992	$ 869,767

[1] On August 1, 2021, the Company acquired the partner's 80% interest in the seven properties held in the USAA partnership. See note 2

[2] The USAA partnership has distributed proceeds from debt refinancing and real estate sales in excess of Regency’s carrying value of its investment, resulting in a negative investment balance of $4.4 million, which is recorded within Accounts Payable and other liabilities in the Consolidated Balance Sheets.