Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Narrative) (Details)

v3.20.2
Debt of the Operating Partnership (Narrative) (Details)
1 Months Ended 6 Months Ended
Jul. 31, 2020
USD ($)
Jun. 30, 2020
USD ($)
Mar. 31, 2020
USD ($)
Feb. 29, 2020
USD ($)
Jan. 31, 2020
Jun. 30, 2020
USD ($)
Jun. 30, 2019
USD ($)
May 31, 2020
Dec. 31, 2019
USD ($)
Debt Instrument [Line Items]                  
Maximum thresholds for total leverage and unsecured leverage   0.65       0.65   0.60  
Netting of cash balances in excess   $ 30,000,000.0       $ 30,000,000.0      
Property Management Fee, Percent Fee   3.00%              
LIBOR floor interest rate   0.25%       0.25%      
Repayments of Long-term Lines of Credit   $ 200,000,000.0              
Minimum [Member]                  
Debt Instrument [Line Items]                  
Percent of guaranty of completion and principal guaranty   5.00%       5.00%      
Maximum [Member]                  
Debt Instrument [Line Items]                  
Percent of guaranty of completion and principal guaranty   100.00%       100.00%      
Tanger Properties Limited Partnership [Member]                  
Debt Instrument [Line Items]                  
Proceeds from revolving credit facility           $ 634,030,000 $ 207,500,000    
Repayments of Long-term Lines of Credit           234,200,000 334,100,000    
Tanger Properties Limited Partnership [Member] | Mortgages [Member]                  
Debt Instrument [Line Items]                  
Net book value of collateral for mortgages payable   $ 169,500,000       169,500,000      
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Line of Credit Facility, Liquidity Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings   20,000,000.0       20,000,000.0      
Line of Credit Facility, Syndicated Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings   580,000,000.0       580,000,000.0      
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized   1,200,000,000       $ 1,200,000,000      
Percentage of funds from operations allowed on a cumulative basis to pay dividends           95.00%      
Proceeds from revolving credit facility     $ 599,800,000            
Line of Credit Facility, Commitment Fee Percentage       0.20% 0.15%        
Tanger Properties Limited Partnership [Member] | Debt [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Line of credit borrowing capacity   600,000,000.0 $ 600,000,000.0 $ 600,000,000.0   $ 600,000,000.0      
Tanger Factory Outlet Centers, Inc. [Member]                  
Debt Instrument [Line Items]                  
Proceeds from revolving credit facility           634,030,000 207,500,000    
Repayments of Long-term Lines of Credit           234,200,000 $ 334,100,000    
Tanger Factory Outlet Centers, Inc. [Member] | Debt [Member] | Mortgages [Member]                  
Debt Instrument [Line Items]                  
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   16,400,000       16,400,000      
Tanger Factory Outlet Centers, Inc. [Member] | Debt [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   399,830,000       399,830,000     $ 0
Tanger Factory Outlet Centers, Inc. [Member] | Debt [Member] | Unsecured Term Loan [Member]                  
Debt Instrument [Line Items]                  
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   $ 350,000,000       $ 350,000,000     $ 350,000,000
London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Line of Credit [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       1.00% 0.875% 1.00%      
London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member]                  
Debt Instrument [Line Items]                  
Basis spread on variable rate       1.00% 0.90% 1.00%      
Subsequent Event [Member]                  
Debt Instrument [Line Items]                  
Repayments of Long-term Lines of Credit $ 320,000,000.0