v3.8.0.1

Debt - Debt Summary (Detail) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2017 | Dec. 31, 2016
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 3.00% | 3.20%
Debt | $ 9,721,065 | $ 10,608,294
Credit Facilities [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 0.00% | 1.00%
Debt | $ 0 | $ 35,023
Senior Notes [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 3.10% | 3.30%
Debt | $ 6,874,108 | $ 6,417,492
Term Loan [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 1.50% | 1.40%
Debt | $ 1,620,688 | $ 1,484,523
Unsecured Other Debt [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 6.10% | 6.10%
Debt | $ 13,994 | $ 14,478
Secured Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 5.70% | 4.90%
Debt | $ 812,371 | $ 979,585
Secured Mortgage Debt of Consolidated Entities [Member] |  |
Debt Instrument [Line Items] |  |
Weighted Average Interest Rate | 2.80% | 3.00%
Debt | $ 399,904 | $ 1,677,193

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- Definition The average effective interest rate during the reporting period. + References Reference 1: 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=64930785&loc=d3e28551-108399 Reference 2: 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(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: 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 2: 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 Reference 3: 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 + Details
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