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Commitments and Contingencies - Insurance (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Commitment And Contingencies [Line Items]
Insurance and other non-current liabilities	$ 353,282	$ 404,560
Insurance Claims
Commitment And Contingencies [Line Items]
Gross amount accrued for insurance claims	264,600	272,900
Insurance and other non-current liabilities	198,500	210,100
Related insurance recoveries/receivables	34,900	56,500
Related insurance recoveries/receivables included in prepaid expenses and other current assets	400	300
Related insurance recoveries/receivables included in other assets net	34,500	$ 56,200
Insurance Claims and Potential Recoveries
Commitment And Contingencies [Line Items]
Related insurance recoveries/receivables	71,900
Related insurance recoveries/receivables pursued	$ 120,000

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Commitment And Contingencies [Line Items]

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Insurance Claims, Amounts Pursued

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Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

+ References

No definition available.

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Amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy. For classified balance sheets, represents the current amount receivable, that is amounts expected to be collected within one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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Carrying amount due after one year of the balance sheet date (or one operating cycle, if longer) of amount due in settlement of a claim for reimbursement from an insurance company when the Company has suffered a loss covered under an insurance policy.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
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The amount needed to reflect the estimated ultimate cost of settling claims relating to insured events that have occurred on or before the balance sheet date, whether or not reported to the insurer at that date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of liabilities classified as other, due after one year or the normal operating cycle, if longer.

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