Annual report pursuant to Section 13 and 15(d)

Debt of the Company (Details)

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Debt of the Company (Details) - Debt [Member] - USD ($)
Dec. 31, 2019
Dec. 31, 2018
Jan. 31, 2018
Dec. 31, 2017
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity $ 600,000,000.0   $ 600,000,000.0 $ 520,000,000.0
Tanger Factory Outlet Centers, Inc. [Member] | Line of Credit [Member]        
Line of Credit Facility [Line Items]        
Guarantor obligations, current carrying value 0 $ 145,100,000    
Tanger Factory Outlet Centers, Inc. [Member] | Unsecured Term Loan [Member]        
Line of Credit Facility [Line Items]        
Guarantor obligations, current carrying value $ 350,000,000 $ 350,000,000