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Organization and Basis of Presentation (Details) In Millions, unless otherwise specified |  |  | 12 Months Ended |  | 12 Months Ended |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Dec. 31, 2012 Subsidiaries [Member] States Subsidiaries | Dec. 31, 2012 Parent [Member] Properties | Dec. 31, 2012 Noncontrolling Interest [Member] Properties | Dec. 31, 2012 Outlet Shoppes at Atlanta [Member] | Dec. 31, 2012 Outlet Shoppes at Atlanta [Member] Outlet Shoppes at Atlanta LLC [Member] Parent [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items] |  |  |  |  |  |  |
Basis spread on variable rate |  | 90000.00% |  |  |  | 27500.00% |
Number of states in which entity operates |  |  | 27 |  |  |  |
Number of regional malls/open-air centers in which interest is owned by the partnership |  |  |  | 77 | 9 |  |
Number of associated centers in which interest is owned by the partnership |  |  |  | 28 | 4 |  |
Number of community centers in which interest is owned by the partnership |  |  |  | 6 | 4 |  |
Number of office buildings in which interest is owned by the partnership |  |  |  | 13 | 7 |  |
Number of regional mall / open-air center expansions in which interest is owned by the partnership | 1 |  |  |  |  |  |
Number of community center expansions in which interest is owned by the partnership | 1 |  |  |  |  |  |
Number of Mall Redevelopments Under Construction | 2 |  |  |  |  |  |
Number of outlet centers under construction in which interest is owned by the partnership | 1 |  |  |  |  |  |
Equity Method Investment, Ownership Percentage |  |  |  |  |  | 25.00% | 75.00%
Percentage ownership interest in qualified subsidiaries (in hundredths) |  |  | 100.00% |  |  |  |
Number of subsidiaries owned by the company |  |  | 2 |  |  |  |
Percentage ownership of the sole general partner in partnership (in hundredths) |  |  | 1.00% | 9.50% |  |  |
Percentage of limited partnership interest owned by CBL Holdings II, Inc. in the operating partnership (in hundredths) |  |  | 83.50% |  |  |  |
Combined percentage ownership by the subsidiaries in operating partnership (in hundredths) |  |  | 84.50% |  |  |  |
Percentage of non controlling limited partner interest of third parties in Operating partnership (in hundredth) |  |  |  | 6.00% |  |  |
Number of company's common stock owned by CBL's Predecessor (in shares) |  |  |  | 3.1 |  |  |
Total combined effective interest of CBL's Predecessor in Operating Partnership (in hundredths) |  |  |  | 11.20% |  |  |
Guarantors Percentage Obligation for Construction loan |  |  |  |  |  | 100.00% |

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