Annual report pursuant to Section 13 and 15(d)

Debt of the Company (Details)

v3.20.4
Debt of the Company (Details) - Debt [Member] - USD ($)
Dec. 31, 2020
Feb. 29, 2020
Dec. 31, 2019
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   $ 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   $ 0    
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