Debt - Schedule of Long-term Debt Outstanding (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Debt Instrument [Line Items]
Finance lease obligations and sale-leaseback financings	$ 83,110
Finance lease obligations and sale-leaseback financings		$ 119,642
Total long-term debt and finance leases	1,429,467	2,783,692
Less: total unamortized deferred financing costs	71,198	88,241
Less: current portion of long-term debt and finance leases	136,127	101,866
Long-term debt and finance leases, less current portion	1,222,142	2,593,585
Senior Notes
Debt Instrument [Line Items]
Total senior and other debt	800,000	800,000
Lines of credit
Debt Instrument [Line Items]
Total senior and other debt	29,314	37,899
Notes payable and other debt
Debt Instrument [Line Items]
Total senior and other debt	502,543	504,522
Senior and Other Debt
Debt Instrument [Line Items]
Total senior and other debt	1,346,357	2,664,050
Senior Long-term Debt
Debt Instrument [Line Items]
Total senior and other debt	814,500	2,121,629
Secured Credit Facility \| Senior Secured Credit Facility
Debt Instrument [Line Items]
Total senior and other debt	$ 14,500	$ 1,321,629

Debt Instrument Carrying Before Debt Issuance Costs, Net of Unamortized Discounts

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- Definition

Finance Lease Liability And Sale Lease Back Financing

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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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