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Debt Guaranteed by the Company (Details) - Debt [Member] - USD ($) | Sep. 30, 2018 | Jan. 31, 2018 | Dec. 31, 2017
--- | --- | --- | ---
Tanger Properties Limited Partnership [Member] | Line of Credit [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Line of credit borrowing capacity | $ 600,000,000 | $ 600,000,000 | $ 520,000,000
Tanger Factory Outlet Centers, Inc. [Member] | Line of Credit [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Guarantor obligation | 203,100,000 |  | 208,100,000
Tanger Factory Outlet Centers, Inc. [Member] | Unsecured Term Loan [Member] |  |  |
Line of Credit Facility [Line Items] |  |  |
Guarantor obligation | $ 325,000,000 |  | $ 325,000,000

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- Definition The current carrying amount of the liability for the freestanding or embedded guarantor's obligations under the guarantee or each group of similar guarantees. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 460 -SubTopic 10 -Section 50 -Paragraph 4 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=115931803&loc=d3e12069-110248 + Details
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Balance Type: | credit
Period Type: | instant

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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Namespace Prefix: | us-gaap_
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Period Type: | instant

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- Details
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Namespace Prefix: |
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- Details
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- Details
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Namespace Prefix: |
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- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Period Type: |