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Leasing Arrangements - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Jan. 01, 2019 | Dec. 31, 2018
Leases Disclosure [Line Items] |  |  |  |
Weighted average remaining lease term | 20 years |  |  |
Lease Term | 20 years |  |  |
Percent rents in excess of minimum rents | $ 62.1 | $ 69.7 |  |
Lease right-of-use asset, net | 12,325.2 |  | $ 12,500.0 | $ 0.0
Operating Lease, Liability | $ 12,397.4 |  | $ 12,500.0 |
Weighted Average Discount Rate, Percent | 4.10% |  |  |
Minimum [Member] |  |  |  |
Leases Disclosure [Line Items] |  |  |  |
Escalation Timing | 1 year |  |  |
Maximum [Member] |  |  |  |
Leases Disclosure [Line Items] |  |  |  |
Escalation Timing | 5 years |  |  |

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- Definition Present value of lessee's discounted obligation for lease payments from operating lease. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977 + Details
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