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Debt - Revolving Credit Agreement (Details) - Revolving credit facility |  | 12 Months Ended |
--- | --- | --- | ---
Jun. 18, 2018 USD ($) | Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Line of Credit Facility [Line Items] |  |  |
Credit lines, maximum borrowing capacity |  | $ 600,000,000.0 |
Five Year Credit Agreement |  |  |
Line of Credit Facility [Line Items] |  |  |
Credit agreement term | 5 years |  |
Credit lines, maximum borrowing capacity | $ 600,000,000.0 |  |
Portion which may be used for the issuance of stand-by letters of credit (up to) | $ 150,000,000.0 |  |
Borrowings under Credit Agreement |  | 0 | $ 0
Outstanding letters of credit |  | 500,000 | 800,000
Credit lines, remaining borrowing capacity |  | $ 599,500,000 | $ 599,200,000
Facility fee (as a percent) |  | 0.125% |
Credit spread (as a percent) |  | 1.00% |
Maximum debt-to-EBITDA ratio |  | 3.5 |
Minimum fixed charge coverage ratio |  | 1.5 |

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- Definition Maximum debt to EBITDA ratio as per covenant terms. + References No definition available. + Details
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- Definition Minimum fixed charge coverage ratio as per restrictive covenant terms. + References No definition available. + Details
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- Definition Percentage points added to the reference rate to compute the variable rate on the debt instrument. + References No definition available. + Details
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- Definition Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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- Definition The total amount of the contingent obligation under letters of credit outstanding as of the reporting date. + References No definition available. + Details
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- Definition The maximum amount of borrowing capacity under a line of credit that is available as of the balance sheet date for a specific purpose other than for financing goods acquired for inventory or imminent delivery to a customer. + References No definition available. + Details
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- Definition The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used. + References No definition available. + Details
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- Definition Fair value of the amount outstanding under the credit facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13476-108611 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Details
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- Details
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