Leases - Schedule of Components of Lease Costs (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2019	Jun. 30, 2019
Finance lease cost:
Amortization of right-to-use assets	$ 7,118	$ 14,287
Variable lease cost	16,106	33,053
Total lease cost	68,532	139,339
Operating, administrative and other costs [Member]
Lease Cost [Line Items]
Operating lease cost	46,098	92,825
Interest expense [Member]
Finance lease cost:
Interest on lease liabilities	243	448
Revenue [Member]
Finance lease cost:
Sublease income	$ (1,033)	$ (1,274)

Finance lease expense.

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- Definition

Lease cost.

+ References

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- Definition

Amount of interest expense on finance lease liability.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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- Definition

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

+ References

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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 single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

+ References

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- Definition

Amount of sublease income excluding finance and operating lease expense.

+ References

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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.

+ References

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