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v3.21.1

Debt of the Operating Partnership (Schedule of Debt) (Details) - USD ($) | 3 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2021 | Feb. 28, 2021 | Dec. 31, 2020 | Dec. 31, 2011
Debt Instrument [Line Items] |  |  |  |
LIBOR floor interest rate | 0.25% |  |  |
Tanger Properties Limited Partnership [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal | $ 1,552,820,000 |  | $ 1,578,743,000 |
Book value of debt | $ 1,542,760,000 |  | 1,567,886,000 |
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.875% 2023 Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 3.875% |  |  |
Principal | $ 250,000,000 |  | 250,000,000 |
Book value of debt | $ 248,136,000 |  | 247,967,000 |
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.75% 2024 Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 3.75% |  |  |
Principal | $ 250,000,000 |  | 250,000,000 |
Book value of debt | $ 248,585,000 |  | 248,493,000 |
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.125% 2026 Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 3.125% |  |  |
Principal | $ 350,000,000 |  | 350,000,000 |
Book value of debt | $ 346,909,000 |  | 346,770,000 |
Tanger Properties Limited Partnership [Member] | Senior Notes [Member] | 3.875% 2027 Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 3.875% |  |  |
Principal | $ 300,000,000 |  | 300,000,000 |
Book value of debt | 297,444,000 |  | 297,346,000 |
Tanger Properties Limited Partnership [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal | 26,420,000 |  | 27,343,000 |
Book value of debt | 27,547,000 |  | 28,569,000 |
Effective interest rates |  |  |  | 5.05%
Tanger Properties Limited Partnership [Member] | Mortgages Payable [Member] | Southaven [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal | 51,400,000 |  | 51,400,000 |
Book value of debt | $ 51,386,000 |  | 51,371,000 |
Term of mortgage extension | 2 years |  |  |
Tanger Properties Limited Partnership [Member] | Unsecured Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal | $ 325,000,000 | $ 350,000,000.0 | 350,000,000 |
Book value of debt | 322,753,000 |  | 347,370,000 |
Tanger Properties Limited Partnership [Member] | Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Principal | 0 |  | 0 |
Book value of debt | $ 0 |  | $ 0 |
Term of mortgage extension | 1 year |  |  |
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Mortgages Payable [Member] | Southaven [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate | 1.80% |  |  |
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Unsecured Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate | 1.00% |  |  |
Tanger Properties Limited Partnership [Member] | London Interbank Offered Rate (LIBOR) [Member] | Line of Credit [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate | 1.00% |  |  |
Tanger Properties Limited Partnership [Member] | Minimum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 5.14% |  |  |
Tanger Properties Limited Partnership [Member] | Maximum [Member] | Mortgages Payable [Member] | Atlantic City Outlets The Walk [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated Interest Rate(s) | 7.65% |  |  |

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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=120520924&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=120400017&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 + Details
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