Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Narrative) (Details)

v3.21.1
Debt of the Operating Partnership (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Mar. 31, 2021
Mar. 31, 2021
Mar. 31, 2020
Feb. 28, 2021
Dec. 31, 2020
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]          
Repayments of Other Long-term Debt   $ 25,924,000 $ 873,000    
Principal $ 1,552,820,000 1,552,820,000     $ 1,578,743,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member]          
Debt Instrument [Line Items]          
Net book value of collateral for mortgages payable 161,700,000 161,700,000      
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%      
Principal 0 $ 0     0
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member]          
Debt Instrument [Line Items]          
Repayments of Other Long-term Debt 25,000,000.0        
Principal 325,000,000 325,000,000   $ 350,000,000.0 350,000,000
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      
Tanger Factory Outlet Centers, Inc. [Member]          
Debt Instrument [Line Items]          
Repayments of Other Long-term Debt   25,924,000 $ 873,000    
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 21,900,000 21,900,000      
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 0 0     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 $ 325,000,000 $ 325,000,000     $ 350,000,000