Organization of the Company (Details) ft² in Millions	Dec. 31, 2019 shares ft² OutletCenter store_brand store subsidiary	Dec. 31, 2018 OutletCenter store
Entity Information [Line Items]
Number of operating partnership units owned by wholly-owned subsidiaries | shares	92,892,260
Exchange Ratio of Partnership Units for Common Shares	1
Consolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	32	36
Total gross leaseable area | ft²	12.0
Outlet center occupancy percentage	97.00%
Number of stores | store	2,400	2,600
Number of store brands | store_brand	400
Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	7
Total gross leaseable area | ft²	2.2
CANADA | Unconsolidated Properties [Member]
Entity Information [Line Items]
Number of Outlet Centers	3
Tanger Factory Outlet Centers, Inc. [Member]
Entity Information [Line Items]
Number Of Wholly Owned Subsidiaries | subsidiary	2
Tanger Properties Limited Partnership [Member] | Class A Limited Partnership Units [Member]
Entity Information [Line Items]
Number of operating partnership units owned by family limited partners | shares	4,911,173