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UNSECURED SENIOR NOTES (Details) $ in Millions | 6 Months Ended |  |
--- | --- | --- | ---
Jun. 30, 2015 | Dec. 17, 2013 USD ($) | Jun. 26, 2012 USD ($)
Senior notes 4.375% due December 15, 2023 |  |  |
Mortgage loans and Notes payable |  |  |
Senior notes, principal amount |  | $ 250 |
Senior notes, interest rate (as a percent) |  | 4.375% |
Senior notes 4.375% due December 15, 2023 | Maximum |  |  |
Mortgage loans and Notes payable |  |  |
Consolidated leverage ratio | 0.60 |  |
Secured debt leverage ratio | 0.40 |  |
Senior notes 4.375% due December 15, 2023 | Minimum |  |  |
Mortgage loans and Notes payable |  |  |
Consolidated interest coverage ratio | 1.50 |  |
Financial and customary covenant, minimum unencumbered asset (as a percent) | 150.00% |  |
Senior notes 4.80% due July 15, 2022 |  |  |
Mortgage loans and Notes payable |  |  |
Senior notes, principal amount |  |  | $ 250
Senior notes, interest rate (as a percent) |  |  | 4.80%
Senior notes 4.80% due July 15, 2022 | Maximum |  |  |
Mortgage loans and Notes payable |  |  |
Consolidated leverage ratio | 0.60 |  |
Secured debt leverage ratio | 0.40 |  |
Senior notes 4.80% due July 15, 2022 | Minimum |  |  |
Mortgage loans and Notes payable |  |  |
Consolidated interest coverage ratio | 1.50 |  |
Financial and customary covenant, minimum unencumbered asset (as a percent) | 150.00% |  |

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- Definition Face (par) amount of debt instrument at time of issuance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=34725769&loc=d3e28878-108400 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 + Details
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