Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v3.19.3.a.u2
Subsequent Events (Details) - USD ($)
1 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Feb. 19, 2020
Jan. 31, 2020
Oct. 31, 2018
Jan. 31, 2018
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Distributions Per Limited Partnership Unit Outstanding, Basic             $ 1.415 $ 1.3925 $ 1.353
Principal             $ 1,582,309,000 $ 1,730,779,000  
Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member]                  
Subsequent Event [Line Items]                  
Granted             531,827 409,972 296,400
Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Granted     697,000            
2020 OPP [Member] | Performance Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Share-based Award Measurement Period     3 years            
Restricted Common Share Award Plan [Member] | Restricted Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member]                  
Subsequent Event [Line Items]                  
Granted             309,000 407,000 253,000
Restricted Common Share Award Plan [Member] | Restricted Shares [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Granted     399,000            
Fourth Quarter [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Common Stock, Dividends, Per Share, Declared       $ 0.355          
Distributions Per Limited Partnership Unit Outstanding, Basic       0.355          
First Quarter [Member] | Tanger Factory Outlet Centers, Inc. [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Common Stock, Dividends, Per Share, Declared       0.3575          
Distributions Per Limited Partnership Unit Outstanding, Basic       $ 0.3575          
Line of Credit [Member] | Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Facility fee percentage             0.15%    
Principal             $ 0 $ 145,100,000  
Line of Credit [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Facility fee percentage     0.20%            
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Basis spread on variable rate   0.90%       0.875% 0.875%    
Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Basis spread on variable rate     1.00%            
Unsecured Term Loan [Member] | Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Principal $ 325,000,000.0       $ 350,000,000.0   $ 350,000,000 $ 350,000,000  
Unsecured Term Loan [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Principal     $ 350,000,000.0            
Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Basis spread on variable rate 0.95%       0.90%   0.90%    
Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Basis spread on variable rate     1.00%            
Debt [Member] | Line of Credit [Member] | Tanger Properties Limited Partnership [Member]                  
Subsequent Event [Line Items]                  
Maximum borrowing capacity   $ 520,000,000.0       $ 600,000,000.0 $ 600,000,000.0   $ 520,000,000.0
Debt [Member] | Line of Credit [Member] | Tanger Properties Limited Partnership [Member] | Subsequent Event [Member]                  
Subsequent Event [Line Items]                  
Maximum borrowing capacity     $ 600,000,000.0