Leases Lease Expense Components (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2019
Operating lease cost:
Fixed Lease Expense	$ 130,946	$ 259,056
Variable Lease Expense	29,907	58,478
Finance lease cost:
Finance Lease, Right-of-Use Asset, Amortization	5,703	11,529
Finance Lease, Interest Expense	3,715	7,490
Net Lease Cost	$ 170,271	$ 336,553

Amount of interest expense on finance lease liability.

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-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=77888426&loc=SL77918686-209980

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Amount of amortization expense attributable to right-of-use asset from finance lease.

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- Definition

Amount of lease cost recognized by lessee for lease contract.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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- Definition

Amount of operating lease expense. Excludes sublease income.

+ References

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-Topic 842
-SubTopic 20
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- Definition

Amount of variable lease cost, excluded from lease liability, recognized when obligation for payment is incurred for finance and operating leases.

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