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Mortgage Notes Payable, Unsecured Notes and Credit Facility (Details 4) - USD ($) $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2016 | Oct. 31, 2016 | May 31, 2016 | Dec. 31, 2015
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 7,076,758 |  |  | $ 6,481,291
Percentage of principle amount at which the entity may redeem some or all of the notes | 100.00% |  |  |
Unsecured notes |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 4,500,000 |  |  |
Unsecured notes | Minimum |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.20% |  |  |
Unsecured notes | Maximum |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 0.45% |  |  |
Unsecured notes | Notes payable maturing in 2017 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 0 |  |  |
Unsecured notes | Notes Payable 6.100 Percent Maturities 2020 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 250,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 6.10% |  |  |
Unsecured notes | Notes Payable 3.625 Percent Maturities 2020 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 400,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.625% |  |  |
Unsecured notes | Notes payable maturing in 2021 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 250,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.95% |  |  |
Unsecured notes | Term loan |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 300,000 |  |  |
Unsecured notes | Term loan | LIBOR |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Debt instrument, basis spread on variable rate (as a percent) | 1.45% |  |  |
Unsecured notes | Notes payable maturing in 2022 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 450,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 2.95% |  |  |
Unsecured notes | Notes Payable 4.200 Maturities 2023 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 350,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 4.20% |  |  |
Unsecured notes | Notes Payable 2.850 Maturities 2023 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 250,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 2.85% |  |  |
Unsecured notes | Notes Payable 2024 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 300,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.50% |  |  |
Unsecured notes | Notes Payable 3.450 Maturities 2025 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 525,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.45% |  |  |
Unsecured notes | Notes Payable 3.500 Maturities 2025 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 300,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.50% |  |  |
Unsecured notes | Notes Payable 2.950 Maturities 2026 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 475,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 2.95% |  | 2.95% |
Unsecured notes | Notes Payable 2.900 Maturities 2026 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 300,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 2.90% | 2.90% |  |
Unsecured notes | Notes Payable Maturities 2046 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Mortgage notes payable and unsecured notes | $ 350,000 |  |  |
Stated interest rate of unsecured notes (as a percent) | 3.90% | 3.90% |  |
Secured notes |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | $ 283,477 |  |  |
Mortgage notes payable and unsecured notes | 2,293,281 |  |  |
Secured notes | Notes payable maturing in 2017 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 18,539 |  |  |
Mortgage notes payable and unsecured notes | 709,491 |  |  |
Secured notes | Notes payable maturing in 2018 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 17,793 |  |  |
Mortgage notes payable and unsecured notes | 76,916 |  |  |
Secured notes | Notes payable maturing in 2019 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 4,696 |  |  |
Mortgage notes payable and unsecured notes | 655,386 |  |  |
Secured notes | Notes Payable Maturities 2020 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 3,624 |  |  |
Mortgage notes payable and unsecured notes | 118,729 |  |  |
Secured notes | Notes payable maturing in 2021 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 3,551 |  |  |
Mortgage notes payable and unsecured notes | 27,844 |  |  |
Secured notes | Notes payable maturing in 2022 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 3,795 |  |  |
Secured notes | Notes Payable Maturities 2023 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 4,040 |  |  |
Secured notes | Notes Payable 2024 |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 4,310 |  |  |
Secured notes | Notes Payable Maturities 2025 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 4,585 |  |  |
Mortgage notes payable and unsecured notes | 84,835 |  |  |
Secured notes | Notes Payable Maturities 2026 [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 4,859 |  |  |
Secured notes | Notes Payable Maturities Thereafter [Member] |  |  |  |
Mortgage Notes Payable, Unsecured Notes and Credit Facility |  |  |  |
Secured notes payments | 213,685 |  |  |
Mortgage notes payable and unsecured notes | $ 620,080 |  |  |

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- Definition Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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