Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Debt of the Operating Partnership (Schedule of Debt) (Details) - USD ($)
1 Months Ended 9 Months Ended
Feb. 29, 2020
Jan. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2019
Dec. 31, 2011
Debt Instrument [Line Items]            
LIBOR floor interest rate       0.25%    
Tanger Properties Limited Partnership [Member]            
Debt Instrument [Line Items]            
Principal     $ 1,579,653,000   $ 1,582,309,000  
Book value of debt     $ 1,568,217,000   1,569,773,000  
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.875% 2023 Senior Notes [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)     3.875%      
Principal     $ 250,000,000   250,000,000  
Book value of debt     $ 247,801,000   247,308,000  
Tanger Properties Limited Partnership [Member] | 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     $ 248,401,000   248,127,000  
Tanger Properties Limited Partnership [Member] | 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     $ 346,630,000   346,215,000  
Tanger Properties Limited Partnership [Member] | 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     297,248,000   296,953,000  
Tanger Properties Limited Partnership [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Principal     28,253,000   30,909,000  
Book value of debt     29,578,000   32,531,000  
Effective interest rates           5.05%
Tanger Properties Limited Partnership [Member] | Mortgages Payable [Member] | Southaven [Member]            
Debt Instrument [Line Items]            
Principal     51,400,000   51,400,000  
Book value of debt     51,346,000   51,272,000  
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member]            
Debt Instrument [Line Items]            
Principal $ 350,000,000.0   350,000,000   350,000,000  
Book value of debt     347,213,000   347,367,000  
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]            
Debt Instrument [Line Items]            
Principal     0   0  
Book value of debt     $ 0   $ 0  
Term of mortgage extension     1 year      
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate     1.80%      
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.00% 0.90% 1.00%      
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member]            
Debt Instrument [Line Items]            
Basis spread on variable rate 1.00% 0.875% 1.00%      
Tanger Properties Limited Partnership [Member] | Minimum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)     5.14%      
Tanger Properties Limited Partnership [Member] | Maximum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member]            
Debt Instrument [Line Items]            
Stated Interest Rate(s)     7.65%