Annual report pursuant to Section 13 and 15(d)

Debt of the Operating Partnership - Narrative (Details)

v3.10.0.1
Debt of the Operating Partnership - Narrative (Details) - USD ($)
1 Months Ended 3 Months Ended 12 Months Ended
Sep. 30, 2018
Jan. 31, 2018
Dec. 31, 2017
Mar. 31, 2016
Oct. 31, 2018
Feb. 28, 2018
Jan. 31, 2018
Aug. 31, 2017
Jul. 31, 2017
Oct. 31, 2016
Aug. 31, 2016
Jun. 30, 2016
Apr. 30, 2016
Feb. 29, 2016
Jan. 31, 2016
Oct. 31, 2016
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Mar. 31, 2018
Nov. 30, 2017
Mortgages [Member] | Westgate [Member] | London Interbank Offered Rate (LIBOR) [Member]                                          
Debt Instrument [Line Items]                                          
Basis spread on variable rate                       1.75%                  
Tanger Properties Limited Partnership [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt     $ 1,780,562,000                           $ 1,730,779,000 $ 1,780,562,000      
Debt retirement make whole premium                                 0 34,143,000 $ 0    
Tanger Properties Limited Partnership [Member] | Mortgages [Member]                                          
Debt Instrument [Line Items]                                          
Collateral for mortgages payable                                 182,000,000        
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member]                                          
Debt Instrument [Line Items]                                          
Term of debt extension           2 years                              
Principal balance of debt   $ 60,000,000 60,000,000     $ 51,400,000 $ 60,000,000                   $ 51,400,000 60,000,000      
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member] | London Interbank Offered Rate (LIBOR) [Member]                                          
Debt Instrument [Line Items]                                          
Basis spread on variable rate   1.75%       1.80%                     1.80%        
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Foxwoods [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt                                         $ 70,300,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Deer Park [Member]                                          
Debt Instrument [Line Items]                                          
Repayments of Long-term Debt                             $ 150,000,000            
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Westgate [Member]                                          
Debt Instrument [Line Items]                                          
Repayments of Long-term Debt                     $ 62,000,000                    
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]                                          
Debt Instrument [Line Items]                                          
Liquidity Line, Maximum Borrowings                                 $ 20,000,000        
Syndicated Line, Maximum Borrowings                                 580,000,000        
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized   $ 1,200,000,000 1,000,000,000       $ 1,200,000,000                   1,200,000,000 1,000,000,000      
Letters of Credit Outstanding, Amount                                 $ 170,000.000        
Percentage of funds from operations allowed on a cumulative basis required for debt covenants                                 95.00%        
Term of debt extension             1 year                            
Principal balance of debt     $ 208,100,000                           $ 145,100,000 208,100,000      
Tanger Properties Limited Partnership [Member] | Line of Credit [Member] | London Interbank Offered Rate (LIBOR) [Member]                                          
Debt Instrument [Line Items]                                          
Basis spread on variable rate     0.90%       0.875%                   0.875%        
Tanger Properties Limited Partnership [Member] | Unsecured Term Note [Member]                                          
Debt Instrument [Line Items]                                          
Repayments of Long-term Debt                           $ 7,500,000              
Tanger Properties Limited Partnership [Member] | Notes Payable, Other Payables [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt                       $ 10,000,000                  
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member]                                          
Debt Instrument [Line Items]                                          
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized       $ 150,000,000                 $ 175,000,000                
Principal balance of debt $ 325,000,000   $ 325,000,000 $ 250,000,000 $ 350,000,000               $ 325,000,000       $ 350,000,000 325,000,000      
Proceeds from debt         $ 25,000,000                                
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]                                          
Debt Instrument [Line Items]                                          
Basis spread on variable rate 0.95%     1.05% 0.90%               0.95%       0.90%        
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.875% 2027 Senior Notes [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt     300,000,000           $ 300,000,000               $ 300,000,000 300,000,000      
Stated Interest Rate(s)                 3.875%               3.875%        
Notes price at percentage of the principal amount                 99.579%                        
Yield to maturity                 3.926%                        
Proceeds from Issuance of Long-term Debt                 $ 295,900,000                        
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 6.125% 2020 Senior Notes [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt               $ 300,000,000                          
Stated Interest Rate(s)               6.125%                          
Debt retirement make whole premium               $ 34,100,000                          
Write off of debt discount and deferred debt issuance costs               $ 1,500,000                          
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.125% Senior Notes $250 million [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt                     $ 250,000,000                    
Notes price at percentage of the principal amount                     99.605%                    
Yield to maturity                     3.171%                    
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.125% Senior Notes 100 million [Member]                                          
Debt Instrument [Line Items]                                          
Notes price at percentage of the principal amount                   98.962%                      
Yield to maturity                   3.248%                      
Additional principal amount                   $ 100,000,000           $ 100,000,000          
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.125% 2026 Senior Notes [Member]                                          
Debt Instrument [Line Items]                                          
Principal balance of debt     350,000,000                           $ 350,000,000 350,000,000      
Stated Interest Rate(s)                   3.125%           3.125% 3.125%        
Proceeds from Issuance of Long-term Debt                               $ 344,500,000          
Tanger Properties Limited Partnership [Member] | Debt [Member] | Line of Credit [Member]                                          
Debt Instrument [Line Items]                                          
Maximum borrowing capacity   600,000,000 $ 520,000,000       $ 600,000,000                   $ 600,000,000 $ 520,000,000      
Loan origination costs   $ 2,300,000         $ 2,300,000                            
Savannah [Member]                                          
Debt Instrument [Line Items]                                          
Mortgage loan                     $ 96,900,000                    
Savannah [Member] | Mortgages [Member]                                          
Debt Instrument [Line Items]                                          
Basis spread on variable rate                     1.65%                    
Designated as Hedging Instrument [Member] | Southaven [Member]                                          
Debt Instrument [Line Items]                                          
Derivative, Fixed Interest Rate                                       2.47%  
Notional Amount                                       $ 40,000,000