Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Schedule of Debt) (Details)

v3.21.2
Debt of the Operating Partnership (Schedule of Debt) (Details) - Tanger Properties Limited Partnership [Member]
1 Months Ended 6 Months Ended
Jul. 31, 2021
USD ($)
Extension
Jun. 30, 2021
USD ($)
Apr. 30, 2021
Mar. 31, 2021
USD ($)
Feb. 28, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2011
Debt Instrument [Line Items]              
Principal   $ 1,376,881,000       $ 1,578,743,000  
Book value of debt   $ 1,368,602,000       1,567,886,000  
Senior Notes [Member] | 3.875% 2023 Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   3.875% 3.875%        
Principal   $ 100,000,000   $ 250,000,000.0   250,000,000  
Book value of debt   $ 99,322,000       247,967,000  
Senior Notes [Member] | 3.75% 2024 Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   3.75%          
Principal   $ 250,000,000       250,000,000  
Book value of debt   $ 248,678,000       248,493,000  
Senior Notes [Member] | 3.125% 2026 Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   3.125%          
Principal   $ 350,000,000       350,000,000  
Book value of debt   $ 347,049,000       346,770,000  
Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   3.875%          
Principal   $ 300,000,000       300,000,000  
Book value of debt   297,543,000       297,346,000  
Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Principal   25,481,000       27,343,000  
Book value of debt   26,511,000       28,569,000  
Effective interest rates             5.05%
Mortgages Payable [Member] | Southaven [Member]              
Debt Instrument [Line Items]              
Principal   51,400,000       51,400,000  
Book value of debt   $ 51,393,000       51,371,000  
Term of extension   2 years          
Unsecured Term Loan [Member]              
Debt Instrument [Line Items]              
Principal   $ 300,000,000     $ 350,000,000.0 350,000,000  
Book value of debt   298,106,000       347,370,000  
Line of Credit [Member]              
Debt Instrument [Line Items]              
Principal   0       0  
Book value of debt   $ 0       $ 0  
LIBOR floor interest rate   0.25%          
Maximum Borrowings of Liquidity Line   $ 20,000,000.0          
Maximum Borrowings of Syndicated Line   580,000,000.0          
Maximum Borrowings of Syndicated Line if Accordion Feature is Utilized   $ 1,200,000,000          
Line of Credit [Member] | Subsequent Event [Member]              
Debt Instrument [Line Items]              
LIBOR floor interest rate 0.25%            
Number of extensions | Extension 2            
Term of extension 6 months            
Basis point annual reduction in the interest rate if we meet certain sustainability thresholds 1            
Line of credit borrowing capacity $ 520,000,000.0            
Maximum Borrowings of Liquidity Line 20,000,000.0            
Maximum Borrowings of Syndicated Line 500,000,000.0            
Maximum Borrowings of Syndicated Line if Accordion Feature is Utilized $ 1,200,000,000            
London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate   1.80%          
London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate   1.25%          
London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]              
Debt Instrument [Line Items]              
Basis spread on variable rate   1.20%          
Minimum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   5.14%          
Maximum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]              
Debt Instrument [Line Items]              
Stated Interest Rate(s)   7.65%