CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY (Parenthetical) - $ / shares	1 Months Ended			3 Months Ended
	Jan. 31, 2020	Feb. 28, 2019	Jan. 31, 2019	Mar. 31, 2020	Mar. 31, 2019
Tanger Factory Outlet Centers, Inc. [Member]
Grant of restricted common share awards, net of forfeitures (in shares)				241,038	242,167
Shares paid for tax withholding for share based compensation (in shares)				56,597	81,284
Common dividends paid per common share (in dollars per share)	$ 0.355		$ 0.35
Common dividends per common share (in dollars per share)	0.3575	$ 0.355		$ 0.7125	$ 0.705
Tanger Properties Limited Partnership [Member]
Grant of restricted common share awards, net of forfeitures (in shares)				241,038	242,167
Shares paid for tax withholding for share based compensation (in shares)				56,597	81,284
Common distributions (in dollars per share)	0.355		$ 0.35	$ 0.7125	$ 0.705
Cash dividend declared (in dollars per unit)	$ 0.3575	$ 0.355