Annual report pursuant to Section 13 and 15(d)

Equity-Based Compensation - Outperformance Plan Assumptions (Details)

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Equity-Based Compensation - Outperformance Plan Assumptions (Details) - Tanger Factory Outlet Centers, Inc. [Member] - Performance Shares [Member]
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
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%  
2017 OPP [Member]      
Risk Free Interest Rate     1.52%
Expected Dividend Rate     3.40%
Expected Volatility Rate     19.00%