Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Outperformance Plan Assumptions (Details)

v3.20.4
Equity-Based Compensation - Outperformance Plan Assumptions (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member]
12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
2020 OPP [Member]      
Risk Free Interest Rate 1.40%    
Expected Dividend Rate 8.40%    
Expected Volatility Rate 29.00%    
2019 OPP [Member]      
Risk Free Interest Rate   2.55%  
Expected Dividend Rate   5.30%  
Expected Volatility Rate   24.00%  
2018 OPP [Member]      
Risk Free Interest Rate     2.40%
Expected Dividend Rate     4.80%
Expected Volatility Rate     27.00%