Mortgage Loans on Real Estate, Monthly Payment Amount

No definition available.

Name:	cbl_MortgageLoansOnRealEstateMonthlyPaymentAmount
Namespace Prefix:	cbl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Interest rate of mortgage loan within investment in mortgage loan on real estate by entity with substantial portion of business acquiring and holding investment real estate or interest in real estate.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 12
-Paragraph Column B
-Subsection 29

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 948
-SubTopic 310
-Section S99
-Paragraph 1
-Subparagraph (SX 210.12-29(Column B))
-URI http://asc.fasb.org/extlink&oid=6589523&loc=d3e617274-123014

+ Details

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Namespace Prefix:	srt_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Face (par) amount of debt instrument at time of issuance.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=114775744&loc=d3e28551-108399

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 55
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=114775985&loc=d3e28878-108400

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

+ 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 210.5-02.22(a)(1))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

+ Details

Name:	us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Cash received for the sale of real estate that is not part of an investing activity during the current period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3179-108585

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Period Type:	duration

- Details

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- Details

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- Details

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- Details

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- Details

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Namespace Prefix:
Data Type:	na
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- Details

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Namespace Prefix:
Data Type:	na
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Subsequent Events - Narrative (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Apr. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
Non-recourse loans on operating properties
Subsequent Event [Line Items]
Balance of Non-recourse Debt		$ 163,476
Volusia Mall \| Non-recourse loans on operating properties
Subsequent Event [Line Items]
Interest rate (as a percent)		8.00%
Volusia Mall \| Non-recourse loans on operating properties \| Subsequent Event
Subsequent Event [Line Items]
Interest rate (as a percent)	4.56%
Volusia Mall \| Non-recourse loans on operating properties \| Malls
Subsequent Event [Line Items]
Balance of Non-recourse Debt		$ 41,000
Volusia Mall \| Non-recourse loans on operating properties \| Malls \| Subsequent Event
Subsequent Event [Line Items]
Balance of Non-recourse Debt	$ 50,000
Honey Creek Mall \| Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of real estate	14,600
Honey Creek Mall \| Non-recourse loans on operating properties \| Malls
Subsequent Event [Line Items]
Balance of Non-recourse Debt		$ 23,700
The Shoppes at Hickory Point \| Subsequent Event
Subsequent Event [Line Items]
Proceeds from sale of real estate	$ 2,508
Village Square \| Mortgages
Subsequent Event [Line Items]
Interest Rate (as a percent)		4.00%	4.00%
Village Square \| Mortgages \| Subsequent Event
Subsequent Event [Line Items]
Interest Rate (as a percent)	5.00%
Monthly payment amount	$ 60