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Earnings Per Share and Earnings per Unit (Details) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Denominator - basic (in shares) | 170,420 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 170,196 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Effect of performance stock units (in shares) | 90 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements | 0 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
Denominator - diluted (in shares) | 170,510 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 170,196 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
CBL & Associates Limited Partnership |  |
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items] |  |
Denominator - basic (in shares) | 199,681 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember | 199,741 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember
Effect of performance stock units (in shares) | 90 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember | 0 us-gaap_IncrementalCommonSharesAttributableToShareBasedPaymentArrangements / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember
Denominator - diluted (in shares) | 199,771 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember | 199,741 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding / dei_LegalEntityAxis = cbl_CBLAndAssociatesLimitedPartnershipMember

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- Definition Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 28A -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1500-109256 + Details
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- Definition The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 16 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1505-109256 + Details
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- Definition Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=7655603&loc=d3e1448-109256 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Weighted-Average Number of Common Shares Outstanding -URI http://asc.fasb.org/extlink&oid=6528421 + Details
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