Partners' Equity of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - shares	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in units)	1,000,000
Grant of restricted common shares awards, net of forfeitures (in units)	242,167	355,184
Repurchased of units (in units)	0	(443,700)
Units issued upon exercise of options (in units)		0
Units withheld for employee income taxes (in units)	(81,284)	(89,437)
General partner (in units)	1,000,000
General partner [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
General partner (in units)	1,000,000	1,000,000
Grant of restricted common shares awards, net of forfeitures (in units)	0	0
Repurchased of units (in units)		0
Units withheld for employee income taxes (in units)	0	0
General partner (in units)	1,000,000	1,000,000
Class A Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	4,960,684	4,995,433
Grant of restricted common shares awards, net of forfeitures (in units)	0	0
Repurchased of units (in units)		0
Units withheld for employee income taxes (in units)	0	0
Limited partners (in units)	4,960,684	4,995,433
Class B Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	92,941,783	93,560,536
Grant of restricted common shares awards, net of forfeitures (in units)	242,167	355,184
Repurchased of units (in units)		(443,700)
Units withheld for employee income taxes (in units)	(81,284)	(89,437)
Limited partners (in units)	93,102,666	93,382,583
Limited partners [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	97,902,467	98,555,969
Grant of restricted common shares awards, net of forfeitures (in units)	242,167	355,184
Repurchased of units (in units)		(443,700)
Units withheld for employee income taxes (in units)	(81,284)	(89,437)
Limited partners (in units)	98,063,350	98,378,016