Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Narrative) (Details)

v3.19.3
Debt of the Operating Partnership (Narrative) (Details) - USD ($)
 9 Months Ended
Sep. 30, 2019
Dec. 31, 2018
Minimum [Member]    
Debt Instrument [Line Items]    
Percent of guaranty of completion and principal guaranty 5.00%  
Maximum [Member]    
Debt Instrument [Line Items]    
Percent of guaranty of completion and principal guaranty 100.00%  
Tanger Properties Limited Partnership [Member] | Mortgages [Member]    
Debt Instrument [Line Items]    
Net book value of collateral for mortgages payable $ 174,500,000  
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  
Line of Credit Facility, Syndicated Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings 580,000,000.0  
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized 1,200,000,000  
Letters of Credit $ 170,000  
Percentage of funds from operations allowed on a cumulative basis to pay dividends 95.00%  
Tanger Properties Limited Partnership [Member] | Debt [Member] | Line of Credit [Member]    
Debt Instrument [Line Items]    
Line of credit borrowing capacity $ 600,000,000.0  
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 19,400,000  
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 $ 4,100,000 $ 145,100,000