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Earnings per Share and Earnings per Unit - Narrative (Details) - shares	1 Months Ended	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
CBL & Associates Limited Partnership
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Undistributed losses allocated to participating common units percent				100.00%
Common Units | CBL & Associates Limited Partnership
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive securities excluded from the computation of EPS (shares)		0	0	0	0
Antidilutive securities excluded from the computation of EPS (shares)		0	0	0	0
Common Stock
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Potentially dilutive securities excluded from the computation of EPS (shares)		0	0	0	0
Antidilutive securities excluded from the computation of EPS (shares)		0	0	0	0
Operating Partnership
Earnings Per Share, Basic, by Common Class, Including Two Class Method [Line Items]
Redeemable noncontrolling interest, units exercised for conversion (shares)	1,193,978
Redeemable noncontrolling interest, shares issued upon exercise of common units (shares)	622,278
Redeemable noncontrolling interest, shares issued upon exercise of contractual exchange rights (shares)	571,700

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 260
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=124432515&loc=d3e3550-109257

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