Partners' Equity of the Operating Partnership (Details) - Tanger Properties Limited Partnership [Member] - shares	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
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)	241,038	242,167
Units withheld for employee income taxes (in units)	(56,597)	(81,284)
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
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)	4,911,173	4,960,684
Grant of restricted common shares awards, net of forfeitures (in units)	0	0
Units withheld for employee income taxes (in units)	0	0
Limited partners (in units)	4,911,173	4,960,684
Class B Limited Partnership Units [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	91,892,260	92,941,783
Grant of restricted common shares awards, net of forfeitures (in units)	241,038	242,167
Units withheld for employee income taxes (in units)	(56,597)	(81,284)
Limited partners (in units)	92,076,701	93,102,666
Limited partners [Member]
General and Limited Partners' Capital Account, Units [Roll Forward]
Limited partners (in units)	96,803,433	97,902,467
Grant of restricted common shares awards, net of forfeitures (in units)	241,038	242,167
Units withheld for employee income taxes (in units)	(56,597)	(81,284)
Limited partners (in units)	96,987,874	98,063,350