Quarterly report pursuant to Section 13 or 15(d)

Debt of the Operating Partnership (Narrative) (Details)

v3.8.0.1
Debt of the Operating Partnership (Narrative) (Details) - USD ($)
1 Months Ended 3 Months Ended
Jan. 31, 2018
Dec. 31, 2017
Feb. 28, 2018
Jan. 31, 2018
Mar. 31, 2018
Minimum [Member]          
Debt Instrument [Line Items]          
Percent of guaranty of completion and principal guaranty         5.00%
Maximum [Member]          
Debt Instrument [Line Items]          
Percent of guaranty of completion and principal guaranty         100.00%
Tanger Properties Limited Partnership [Member]          
Debt Instrument [Line Items]          
Principal   $ 1,780,562,000     $ 1,790,682,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member]          
Debt Instrument [Line Items]          
Net book value of collateral for mortgages payable         189,300,000
Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member]          
Debt Instrument [Line Items]          
Term of mortgage extension     2 years    
Principal $ 60,000,000 60,000,000 $ 51,400,000.0 $ 60,000,000 51,400,000
Tanger Properties Limited Partnership [Member] | Line of Credit [Member]          
Debt Instrument [Line Items]          
Line of Credit Facility, Liquidity Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings         20,000,000
Line of Credit Facility, Syndicated Line, Maximum Borrowings, Included in Total Line of Credit Maximum Borrowings         580,000,000
Line of Credit Facility, Syndicated Line, Potential Maximum Borrowings if Accordion Feature is Utilized 1,200,000,000.0 1,000,000,000.0   $ 1,200,000,000.0 1,200,000,000
Letters of Credit         $ 6,000,000
Percentage of funds from operations allowed on a cumulative basis to pay dividends         95.00%
Term of mortgage extension       1 year  
Principal   208,100,000     $ 227,600,000
Tanger Properties Limited Partnership [Member] | Debt [Member] | Line of Credit [Member]          
Debt Instrument [Line Items]          
Line of credit, Maximum borrowing capacity 600,000,000 520,000,000   $ 600,000,000 600,000,000
Debt Issuance Costs, Line of Credit Arrangements, Gross $ 2,300,000     $ 2,300,000  
Tanger Factory Outlet Centers, Inc. [Member] | Debt [Member] | Mortgages [Member]          
Debt Instrument [Line Items]          
Maximum amount of unconsolidated joint venture debt guaranteed by the Company         32,700,000
Tanger Factory Outlet Centers, Inc. [Member] | Debt [Member] | Line of Credit [Member]          
Debt Instrument [Line Items]          
Maximum amount of unconsolidated joint venture debt guaranteed by the Company   $ 208,100,000     $ 227,600,000
London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Mortgages [Member] | Southaven [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate 1.75%   1.80%   1.80%
London Interbank Offered Rate (LIBOR) [Member] | Tanger Properties Limited Partnership [Member] | Line of Credit [Member]          
Debt Instrument [Line Items]          
Basis spread on variable rate   0.90%   0.875% 0.875%
Designated as Hedging Instrument [Member]          
Debt Instrument [Line Items]          
Notional Amount         $ 515,000,000
Designated as Hedging Instrument [Member] | Southaven [Member]          
Debt Instrument [Line Items]          
Company Fixed Pay Rate         2.47%
Notional Amount         $ 40,000,000